Home›Engines›Generac V-type

Generac V-type Engine

Name: Generac V-type Engine
Brand: Generac

The Generac V-type is a 3.9 L 10-cylinder naturally aspirated engine rated at 1800 rpm, producing up to 88 kW. It powers generator sets from Generac, including the GenSpec007, MQT100, QT 130 and QT 3.9L 40kW. It holds 3.8 L (1.0 gal) of oil and 17 L (4.5 gal) of coolant.

Also known as: Generac V-type

Part of the Generac V-type engine family — 2 variants share parts & fitment.

3.9 L

Displacement

Cylinders

1800 rpm

Rated speed

88 kW

Gross power

On this pageSpecs Generator sets Maintenance FAQ Service intervals Torque & specs Fluids Procedures Wiring

Engine specifications

Oil capacity	3.8 L
Coolant capacity	17.0 L
Displacement	3.9 L
Cylinders	10
Aspiration	Naturally Aspirated
Rated speed	1800 rpm
Gross power	88 kW

Generator sets powered by this engine

Generac GenSpec007 Generac MQT100 Generac QT 130 Generac QT 3.9L 40kW Generac QT 5.4L Generac QT030 Generac QT040 Generac QT048 Generac QT050 Generac QT070 Generac QT080 Generac QT100 Generac QT10054ANSA Generac QT150 Generac RG048 Generac SG060 Generac SG080

How to read your Generac engine serial & model number →

Common problems

No AC output from generator.
Cause: Defective Control Module circuit board
Fix: *Contact the nearest Authorized Dealer for assistance.
Engine won’t crank.
Cause: 1. 15 amp fuse blown. 2. Loose or corroded or defective battery cables. 3. Defective starter contactor. 4. Defective starter motor. 5. Dead or Defective Battery. 6. 5 amp fuse blown.
Fix: 1. Replace fuse. 2. Tighten, clean or replace battery cables as necessary. 3. Replace contactor.* 4. Replace starter motor.* 5. Remove, change or replace battery. 6. Replace fuse.*
Engine starts then shuts down.
Cause: AUTO/OFF/MANUAL Switch at OFF, engine continues to run
Fix: *Contact the nearest Authorized Dealer for assistance.
Engine starts hard, runs rough.
Cause: 1. Flame arrestor (air cleaner) plugged or damaged. 2. Plugged fuel line. 3. Defective spark plugs. 4. Fuel pressure incorrect.
Fix: 1. Clean or replace as needed. 2. Unclog fuel line. 3. Clean, regap or replace plugs. 4. Confirm fuel pressure to regulator is as recommended in SPECIFICATIONS.
Engine cranks but won't start.
Cause: 1. Out of fuel. 2. Fuel solenoid (FS) is defective. 3. Open Wire #14A from Engine Control circuit board. 4. Spark plugs defective. 5. Door on tank not closed.
Fix: 1. Replenish fuel. 2. Replace solenoid.* 3. Reconnect wire. 4. Clean, regap or replace plugs. 5. Close door on tank.
AUTO/OFF/MANUAL Switch at OFF, engine continues to run.
Cause: 1. Defective AUTO/OFF/MANUAL switch 2. Open/disconnected wire #15A between AUTO/OFF/MANUAL switch and Control Module circuit board. 3. Defective Control Module circuit board
Fix: 1. Replace switch.* 2. Reconnect/close wire. 3. Replace board.*
Engine cranks but won't start
Cause: 1. Out of fuel. 2. Fuel solenoid (FS) is defective 3. Open Wire #14A from Engine Control circuit board. 4. Spark plugs defective. 5. Door on tank not closed.
Fix: 1. Replenish fuel. 2. Replace solenoid.* 3. Reconnect wire. 4. Clean, regap or replace plugs. 5. Close door on tank.
Defective AUTO/OFF/MANUAL switch.
Cause: 1. Open/disconnected wire #15A between AUTO/OFF/MANUAL switch and Control Module circuit board.
Fix: Replace switch.* Reconnect/close wire.
DANGER Safety 001

Compiled from service & troubleshooting documentation across every generator set that uses the Generac V-type.

Maintenance schedule

Item	Spec	Capacity	Part #	Interval
Air filter	Air Cleaner		0A4637		Amazon eBay $49.95
Fuel filter			—	1000 hr
Oil filter	Changing the Engine Air Cleaner		0A4637	500 hr	Amazon eBay $49.95
Battery	Battery Maintenance		—	1200 hr
Belt	DC Fuses (7.5 amp) and (25 amp)		—	8760 hr
Coolant		3.8	—	1000 hr
Coolant filter	Cooling System		—	1000 hr
Oil		100.0	—	1000 hr
Spark plug			—	500 hr

Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.

Repair guides

Step-by-step procedures compiled from the Generac service manual for this engine.

Service intervals

Item	Action	Hours	Months	Notes
Engine oil level / crankcase oil	Check	20 hr		Check at least every 20 hours of operation, or prior to use
Engine oil (break-in oil)	Change	30 hr		First service — Break-in oil should be changed after 30 hours of operation; Level 2 wear-in service performed once after first three months or first 30 hours
Engine oil and oil filter	Change	150 hr	6 mo	First 100 operating hours; after initial change service at 150 operating hours or 6 months, whichever comes first
Air cleaner	Other	500 hr		Every 500 operating hours: service air cleaner
Engine DC alternator	Check	500 hr		Every 500 operating hours
Starter	Check	500 hr		Every 500 operating hours
Battery state of charge and condition	Check		3 mo	Every three months (Authorized Service Facility)
Cooling system	Inspect		1 mo	Inspect at least once each month; check hoses and clamps
Cooling system	Other		12 mo	Once annually: flush cooling system / drain, flush and refill
Engine governor	Test		12 mo	Once annually - test; adjust or repair if needed
Engine ignition system	Check		3 mo	Every three months
Engine safety devices (low oil pressure, low coolant level, high coolant temperature)	Test		6 mo	Once every six months
Engine-generator visual inspection	Inspect		1 mo	Monthly: check for damage, loose/corroded fasteners, fuel/oil/coolant leaks
Exhaust system	Inspect		3 mo	Inspect at least once every three months; check pipes, mufflers, clamps
Fan belts	Check		3 mo	Inspect every three months; replace defective belt; check tension (3/8 to 5/8 inch deflection)
Fuel system	Test		3 mo	Every three months: inspect and test fuel system
Generator	Clean		12 mo	Once annually: clean and inspect generator; check stator/rotor insulation resistance
Transfer switch	Check		3 mo	Every three months

Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.

Service specifications

Type	Item	Value	Unit	Condition
Clearance	Fan belt deflection (force of approx. 22 pounds / 10 kg applied midway between pulleys)	3/8 to 5/8	inch (10 to 16 mm)	midway between pulleys
Gap	Spark plug gap	1.01	mm (0.040 inch)
Other	Altitude deration	1% for every 100 m above 183 m; 3% for every 1000 ft above 600 ft
Other	Coolant capacity	3.0	U.S. gal
Other	Crankcase oil capacity	4	U.S. qts (3.8 liters)
Other	Generator locked rotor kVA available @ 35% voltage dip	80	KVA	single-phase or 208V, 3-phase
Other	Generator locked rotor kVA available @ 35% voltage dip	90	KVA	480V, 3-phase
Other	Telephone interference factor (TIF)	< 50
Other	Total harmonic distortion	< 3.5	%
Pressure	Compression ratio	9.1-to-1
Pressure	Gas pressure at inlet to fuel shutoff solenoid (must not exceed)	14	inches water column (0.5 psi)
Pressure	LP fuel pressure	7-14	in Water Column	fuel system
Pressure	Low oil pressure switch setting	8	psi	contacts close below this pressure
Pressure	NG fuel pressure	3.5-14	in Water Column	fuel system
Pressure	Operating fuel pressure	5" - 14"	H2O
Pressure	Operating fuel pressure (natural gas and propane vapor)	5 to 14	in. water column (0.18 to 0.5 psi)
Pressure	Optimum pressure at fuel shutoff solenoid	11	inches water column (0.4 psi)
Speed	Fan speed	2060	rpm
Speed	Frequency regulation (steady state)	0.25	%	isochronous operation
Speed	Governor steady state regulation	± 0.25	%	isochronous
Speed	Rated synchronous RPM	1800	rpm	60 Hz
Speed	Rated synchronous RPM (60 Hz)	1800	rpm	60 Hz
Speed	Steady state frequency regulation	±0.25	%
Temperature	Exhaust temperature at rated output	938	°F	60 Hz rated output
Temperature	High coolant temperature switch setting	140	°C (284°F)
Temperature	Maximum ambient temperature	50	°C (140°F)
Temperature	Maximum operating air temp. on radiator	60	°C (150°F)
Temperature	Operating temperature rise	120	°C above 40 °C ambient	rated
Temperature	Operating temperature rise above ambient	120	°C	above 40°C ambient
Temperature	Temperature deration	3% for every 10	°C above 25°C; 1.65% for every 10°F above 77°F
Voltage	Battery charge alternator	12V, 30	Amp
Voltage	Static battery charger	2	Amp
Voltage	System voltage	12	Volts
Voltage	Voltage regulation	1	%	steady state
Voltage	Voltage regulation	±1	%
Voltage	Voltage regulator regulation	± 1	%	single-phase sensing

Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.

Recommended fluids

Fluid	Grade	Standard	Ambient	Capacity	Notes
Coolant	50-50 mixture of low silicate ethylene glycol base anti-freeze and deionized water			3.0 U.S. gal	Do not use chromate base rust inhibitor; high silicate boosters or soluble oil inhibitor not recommended
Coolant	Ethylene glycol 50/50 mix			11.0 l	RG048: 11 l, RG060/RG080: 17 l
Engine oil	5W-30 synthetic		below 0°C		For temperatures below 32°F (0°C); optional Cold Weather Start Kit recommended
Engine oil	SAE 20W-20 or 15W-40	For Service SJ or SH	0°C to 27°C		32° to 80°F (0° to 27°C)
Engine oil	SAE 30W or 15W-40	For Service SJ or SH	above 27°C	4.0 U.S. quarts	Above 80°F (27°C) use SAE 30W or 15W-40 (older manual); unit filled with 15W-40 at factory (newer manual: 5W-20, use 5W-30 on change)
Fuel	Natural gas (min. 1,000 Btu per cubic foot) or LP gas (min. 2,520 Btu per cubic foot)				Fuel pressure 5 in. - 14 in. water column
Fuel	Natural gas, propane vapor				Operating fuel pressure 5" - 14" H2O; secondary fuel regulator and fuel shut off solenoid standard
Gear oil	SAE 90 gear lubricant				Generator gearbox (if equipped)

Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.

Procedures

Preparation for Start-Up installation

⚠ Ensure AUTO/OFF/MANUAL switch is in OFF position before working on the generator.

Tools: Manometer

Ensure 120VAC circuit breaker to battery charger is open.
Remove the fuse from the control panel (H-100/R-series: 15 Amp ATO fuse).
Connect battery cables; attach negative cable last.
Close 120VAC circuit breaker to the battery charger.
Insert the fuse into the control panel.
Move AUTO/OFF/MANUAL switch to MANUAL; engine should crank and start.
Check voltage at generator terminals and check for leaks.
Close generator main line circuit breaker; turn generator set off.

Reconfigure the Fuel System (NG to LP) installation

⚠ Make sure fuel supply is of proper pressure and type for configuration.

⚠ Keep ports free from debris during reconfiguration.

Tools: Pipe sealant

Turn the main gas supply off.
Remove carburetor fuel hose from outlet Port 1 of demand regulator.
Remove brass hose fitting from Port 1.
Remove pipe plug from Port 2.
Install brass hose fitting into Port 2.
Install pipe plug into Port 1.
Connect carburetor gas hose to brass fitting; tighten all clamps and plugs.
Set the Dip switch inside the control panel to LP or NG position.

Battery Maintenance maintenance

⚠ Do not use tap water in batteries.

⚠ Storage batteries give off explosive hydrogen gas.

⚠ Do not use jumper cables or a booster battery to crank the engine.

Tools: Automotive-type battery hydrometer

Inspect battery posts and cables for tightness and corrosion; tighten and clean as necessary.
Check battery fluid level of unsealed batteries; fill with DISTILLED WATER only if necessary.
Have state of charge and condition checked with an automotive-type battery hydrometer.

Changing Engine Oil maintenance

⚠ Never operate engine with oil below the dipstick ADD mark.

⚠ Do not overtighten the oil filter.

Tools: Suitable container, Clean, lint-free cloth

Remove OIL DRAIN HOSE from its retaining clip.
Loosen and remove OIL DRAIN HOSE CAP; drain oil completely into suitable container.
Install and tighten OIL DRAIN HOSE CAP; re-install into retaining clip.
Turn OIL FILTER counterclockwise and remove; dispose of old filter.
Apply light coating of new engine oil to seal of new filter; install and tighten by hand only.
Remove OIL FILL CAP; add recommended oil. Do not fill above dipstick FULL mark.
Start engine and check for oil leaks.

Changing the Engine Air Cleaner maintenance

Remove the air cleaner cover.
Replace the air filter, making sure it is positioned properly.
Reattach the cover.

Spark Plugs - Inspect and Set Gap maintenance

⚠ Do not blast the spark plugs to clean.

Tools: Wire feeler gauge, Wire brush, Commercial solvent

Clean area around base of spark plugs to keep dirt out.
Remove spark plugs and check condition; replace if worn or reuse questionable.
Check gap with a wire feeler gauge; adjust by carefully bending ground electrode.

Engine Start-up and Transfer (Manual Transfer Switch) operation

⚠ Do not crank the engine continuously for longer than 30 seconds.

⚠ Do not attempt manual operation until all power supplies to the transfer switch are positively turned off.

Turn OFF or disconnect utility power circuit to the transfer switch.
Set transfer handle to UTILITY (NORMAL) position.
Set generator main line circuit breaker to OFF (or OPEN).
Start the generator; let engine stabilize and warm up.
Move transfer switch manual handle to STANDBY (GENERATOR) position.
Set generator main line circuit breaker to ON (or CLOSED).

Retransfer and Shutdown operation

Set generator main line circuit breaker to OFF (or OPEN).
Move transfer switch handle to UTILITY (NORMAL) position.
Turn ON the utility power supply to the transfer switch.
Let generator run at no-load a few minutes to stabilize temperatures.
Shut down the generator.

Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.

Voltage reconnection

Voltage	Phase	Connection	Leads	Notes
120/208	3	6 wire	3-Phase 6 wire alternator output	Power factor 0.8
120/208V	3-phase	Y configuration (6 lead)	6-lead (S1-S6; E1-E3)	Rated voltage between circuit breaker terminals E1-E2, E1-E3, E2-E3 is 208V; between each terminal and neutral point 00 is 120V
120/240	1	4 wire	1-Phase 4 wire alternator output	Power factor 1.0
120/240	3	6 wire	3-Phase 6 wire alternator output	Power factor 0.8
240V	1-phase	Four-lead, single-phase stator (voltage code A)	4-lead	Rated voltage between each circuit breaker terminal is 240V; between each terminal and neutral point 00 is 120V
277/480	3	6 wire	3-Phase 6 wire alternator output	Power factor 0.8
277/480V	3-phase	Y configuration (6 lead)	6-lead (S1-S6; E1-E3)	Rated voltage between circuit breaker terminals E1-E2, E1-E3, E2-E3 is 480V; between each terminal and neutral point 00 is 277V

Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.

Parts cataloged across the Generac V-type family

300

Part #	Description	Category
057796	GASKET AIR CLEANER	air_filter
0A4637	Air Cleaner	air_filter
0E7702	HOLD DOWN AIR CLEANER	air_filter
0F5418	ELEMENT AIR FILTER	air_filter
0F6322	BOTTOM PLATE, AIR CLEANER 3.9L	air_filter
0F6323	PLATE, AIR CLEANER TOP	air_filter
0E9868A	ALTERNATOR DC W/OUT PULLEY	alternator
0F3216	ALTERNATOR DC W/OUT PULLEY	alternator
0F3216C	PULLEY 132 OD DC ALTERNATOR (3600 RPM)	alternator
0F3446	BRKT R/H SIDE D.C. ALTERNATOR	alternator
0F3447	BRKT L/H SIDE D.C. ALTERNATOR	alternator
0F6480	BRKT L/H SIDE DC ALTERNATOR	alternator
0F3834	ASSY SCROLL 390 X 60MM CPL	assembly
058208	BATT 12VDC 24F 525 CCA (SOLD AS AN OPTION)	battery
052624	BEARING BALL 6212 SEALED	bearing
0D3488H	SERPENTINE BELT (60.5")	belt
0A2496A	BRACKET SAE SCROLL TENSIONER	bracket
035606	SENSOR HI COOLANT SHUTDOWN	coolant_sensor
044149	GASKET EXHAUST RING	gasket
064945	GASKET CARBURETOR ADAPTOR	gasket
0E5968	GASKET EXTRUDED TRIM (328” LG)	gasket
0E6586	GASKET BOSCH 32	gasket
0E7841	GASKET THERMOSTAT ADAPTOR	gasket
035685	CLAMP HOSE #28 1.32-2.25	hose
040105	HOSE COOL 2 IN ID 20R4	hose
042561	CLAMP HOSE #36 1.88-2.75	hose
048031C	CLAMP HOSE BAND 1/4	hose
048031J	CLAMP HOSE BAND .63	hose
057822	CLAMP HOSE #8 .53-1.00	hose
057823	CLAMP HOSE #10 .56 - 1.06	hose
057824	CLAMP HOSE #16 .87 - 1.50	hose
059057	HOSE 3/4 ID SAE-30R2 (18” LG)	hose
059193C	HOSE 5/8 ID X 31.0" LG	hose
069860E	HOSE DRAIN ASSY 28"	hose
0C7649	CLAMP HOSE .38-.87	hose
0F4413	HOSE UPPER RAD CPL C2 3.9L	hose
0F4414	HOSE LOWER RAD CPL C2 3.9L	hose
0F4051D	INSULATION INNER DUCT	insulation
0E7415	Oil Filter	oil_filter
022097	WASHER LOCK M6-1/4	other_service
022127	NUT HEX 1/4-20 STEEL	other_service
022129	WASHER LOCK M8-5/16	other_service
022131	WASHER FLAT 3/8-M10 ZINC	other_service
022145	WASHER FLAT 5/16-M8 ZINC	other_service
022152	WASHER LOCK #10	other_service
022155	WASHER LOCK #6	other_service
022158	NUT HEX #10-32 STEEL	other_service
022237	WASHER LOCK 3/8	other_service
022241	NUT HEX 3/8-16 STEEL	other_service
022264	WASHER LOCK #8-M4	other_service
022447	WASHER SHAKEPROOF INT 1/4	other_service
022473	WASHER FLAT 1/4-M6 ZINC	other_service
022770	SCREW RHM 1/4-20 X 3	other_service
023334	SCREW HHC 1/4-28 X 1/2 G5	other_service
023454	KEY WOODRUFF #E	other_service
023484N	BUSHING SNAP SB-2.5-31	other_service
023897	WASHER FLAT #10 ZINC	other_service
024114	NUT HEX 5/16-24 STEEL	other_service
024196	SCREW RHM 1/4-20 X 3-1/2	other_service
024469	SCREW HHTT #10-32 X 3/8 CZ	other_service
025433	LUG SLDLSS #6-14 X 13/64 CU	other_service
026812	ELBOW 90D 3/4 NPT	other_service
026915	NIPPLE CLOSE 3/4 X 1.375	other_service
026925	PLUG STD PIPE 3/8 STEEL SQ HD	other_service
029289	TAPE ELEC 1/2 FOAM (AS REQ’D)	other_service
029673	DIO BRIDGE 25A 600V	other_service
031919	PLUG STD PIPE 3/8 COUNTERSUNK	other_service
036797	BOLT U 5/16-18 X 2.25	other_service
036943	SCREW PPHM #10/32 X 2	other_service
037561	NUT WING 1/4-20 NYLK	other_service
038804Y	CABLE BATT RED #1 X 35.00	other_service
038805H	CABLE BATT BLK #1 X 23.00	other_service
040532	CB 0100A 3P 240V S BQ3 LL	other_service
042419	SCREW RHM 10-32 X 4	other_service
042568	SCREW HHC M6-1.0 X 20 G8.8	other_service
043180	WASHER FLAT M4	other_service
043790	BARBED EL 90 3/8 NPT X 3/8	other_service
044118	BARBED STR 1/2 NPT X 5/8	other_service
045757	SCREW HHC M6-1.0 X 25 G8.8	other_service
04576100AQ	STUD M14-2.0 X 615 G5 ZINC	other_service
04576100BU	STUD M14-2.0 570 G5 ZINC	other_service
045771	NUT HEX M8-1.25 G8 CLEAR ZINC	other_service
045772	NUT HEX M10-1.5 G8 YEL CHR	other_service
046526	WASHER LOCK M10	other_service
046627	Radiator Cap	other_service
047248	BALL BEARING-45 MM	other_service
047411	SCREW HHC M6-1.0 X 16 G8.8	other_service
048467	CIRCT BRK 7 X 1 ETA 46-500-P	other_service
049226	WASHER LOCK M5	other_service
049721	SCREW HHC M6-1.0 X 35	other_service
049813	NUT HEX M6 X 1.0 G8 YEL CHR	other_service
049897	SCREW SHC M8-1.25 X 20 G8	other_service
050279	DECAL FUEL INLET NG (NATURAL GAS APPLICATION)	other_service
050280	DECAL FUEL INLET LPG (LP VAPOR APPLICATION)	other_service
050331	BATTERY POST COVER BLACK	other_service
050331A	BATTERY POST COVER RED +	other_service
050873A	PLUG PIPE 1/4 CSK W/ VIBRA SL	other_service
051713	WASHER FLAT M5	other_service
052250	TAPE FOAM 1 X 1 (26.75” LG)	other_service
052251	DAMPENER VIBRATION 40 BLUE	other_service
052252	DAMPENER VIBRATION	other_service
052257	SPACER .49 X .62 X 1.87 PWDR/ZNC	other_service
052647	SCREW SHC M10-1.5 X 25 G12.9	other_service
052677	WASHER NYLON .50 X .87 X .06	other_service
052860	NUT FLANGED HEX M12-1.75	other_service
0536210410	ASSY WIRE 14.00"	other_service
054455	ADP OIL DRN 1/2-20	other_service
055414	LUG SLDLSS #2-#8 X 17/64 CU	other_service
055596	BARBED STR 3/8 NPT X 3/8	other_service
055911	BLOCK TERM 20A 12 X 6 X 1100V	other_service
055934D	CLAMP VINYL 1.06 X .406 Z	other_service
056326	TRIM VINYL BLACK 1/8GP (16.5”LG)	other_service
056739	RELAY SOLENOID 12VDC PNL MNT	other_service
057073	JUNCTION BLOCK 3/8-16	other_service
057701	BLOCK TERM 20A 8 X 6 X 1100V	other_service
057795A	BARBED EL 90 3/4 PLASTIC	other_service
060619	SCREW SHC M10-1.50 X 40 G12.9	other_service
061012	PLUG STD PIPE 1/8 SOCKET HEAD	other_service
065852	SPRING CLIP HOLDER .37-.62	other_service
066760	STRIP SEALANT 1/8 X 1 (44.52”LG)	other_service
067210A	DECAL GROUND LUG	other_service
067377	Start-up Inspection for Standby Power Systems	other_service
067680	ASSY VOLTAGE REGULATOR 60HZ	other_service
069811	CAP HEX 1/4 NPT BRASS	other_service
070892	SLIP RING MACHINED	other_service
075580	FLANGE FUEL INLET	other_service
075763	BOOT BATTERY CABLE	other_service
076749	TANK COOLANT RECOVERY	other_service
077043F	CONDUIT FLEX 1-1/4" (30" LG - 3.0L FORD & 3.9L CHRYSLER)	other_service
077043J	CONDUIT FLEX 2.0" ID (36” LG)	other_service
077992	NUT HEX LOCK M6-1.0 SS NY INS	other_service
078115	WASHER SELF LOCKING DOME #4-40	other_service
078115A	WASHER SELF LOCKING DOME #8-32	other_service
080712	BRKT COOLANT RECOVERY TANK	other_service
080762	BOLT U 3/8-16 X 2.62	other_service
081008	GROMMET 1.25 X .25 X .75	other_service
082573	SWITCH RKR DPST 125V SPD	other_service
085917	WASHER LOCK 3/8 SS	other_service
085918	NUT HEX 3/8-16 SSTL	other_service
087233	RIVET POP .1875 X .450 SS	other_service
088775	WASHER FLAT 3/8 SS	other_service
089514	FTG CMPR 3/8TUBE X 3/8 NPT W/FERL	other_service
089685	GROMMET .75 X .12 X .50	other_service
089961	FOAM STRIP 3/4"WIDE X 3/16"THK (294”LG)	other_service
090283	CAP RADIATOR 13 PSI	other_service
0912970094	ASSY WIRE 14 AWG 34.8" GRN/YEL	other_service
0A2077	CB 0125A 2P 240V S BQ2 LL	other_service
0A5062J	SPACER 9.5H 3.2 ID	other_service
0A7822	LUG SLDLSS 600/250-1/0 X 1/4-28	other_service
0A9457	DECAL NEUTRAL	other_service
0C2266	SCREW PHTT M5-0.8 X 16 ZYC	other_service
0C2428	SCREW PHTT #6-32 X 1/2 ZYC	other_service
0C2454	SCREW THF M6-1 X 16 N WA Z/JS	other_service
0C2634A	ASSEMBLY COVER ACCESS	other_service
0C3397	FASTENER RATCHET	other_service
0C3990	SCREW PHTT M4-0.7 X 10 ZYC	other_service
0C9708	INSTR HYPOT TEST (NOT SHOWN)	other_service
0D1509	DECAL INLET PRESSURE	other_service
0D2157	SCREW SHC M6-1.0 X 50 G8.8	other_service
0D2244M	ASSY MAGPICKUP(3/8-24 MALE)	other_service
0D4698	BLOCK TERM 20A 6 X 3 X 1100V	other_service
0D5466	BUS BAR NEUTRAL BLOCK 390	other_service
0D5552	CB 0050A 3P 480V S ED4 LL	other_service
0D5553	CB 0060A 3P 480V S ED4 LL	other_service
0D5554	CB 0070A 3P 480V S ED4 LL	other_service
0D5556	CB 0090A 3P 480V S ED4 LL	other_service
0D5572	CB 0150A 3P 600V S FD6 LL	other_service
0D5573	CB 0175A 3P 600V S FD6 LL	other_service
0D5574	CB 0200A 3P 600V S FD6 LL	other_service
0D5575	CB 0225A 3P 600V S FD6 LL	other_service
0D5576	CB 0250A 3P 600V S FD6 LL	other_service
0D5577	CB 0300A 3P 600V S JD6 LL	other_service
0D6029	SCREW HHTT M6-1.0 X 16 ZYC	other_service
0D9693	CB 0125A 3P 480V S ED4 LL	other_service
0D9832	SCREW HHC M12-1.75 X 75 SS	other_service
0E0170B	EXHAUST BLANKET 850MM (C4)	other_service
0E0170C	EXHAUST BLANKET 725MM (C4)	other_service
0E0992A	PLUG EXPANSION 14 OD	other_service
0E3161	ASSY PCB BOSCH GOV DRIVER	other_service
0E3257	SCREW HWHTF M6-1.0 X 16	other_service
0E3664	BASE, QN CIRCUIT BREAKER	other_service
0E4394	ACTUATOR BOSCH 40 GOVERNOR	other_service
0E4494	SWITCH RKR DPDT ON-OFF-ON	other_service
0E5048A	FLEXPLATE HSB 3.9L CHRYSLER (1800RPM)	other_service
0E5706	REAR BEARING CARRIER 390/DRCT	other_service
0E6002	MTG TRACK BQ SIEMENS CB 3P	other_service
0E6076	REVCOR FAN 12.63 X 2 W/PRESSDISK	other_service
0E6376B	VENTURI 28 ID THROTTLE W/CHOKE	other_service
0E6382B	VENTURI HOLDER W/40MM ACTUATOR	other_service
0E6406	HOLDER VENTURI	other_service
0E6703	COVER FLYWHEEL ACCESS	other_service
0E6875A	RELAY 12VDC C FORM W/DIODE	other_service
0E7254	MACH THERM ADAPTOR 3.9L CHRY	other_service
0E7283	CB 0150A 2P 240V S QN2 LL	other_service
0E7284	CB 0175A 2P S QN2 LL 240V	other_service
0E7403C	FUSE ATO TYPE 15 AMP (BLUE)	other_service
0E7839	MACHINING, CARBURETOR ADAPTOR	other_service
0E7854	CLUTCH COOLING FAN	other_service
0E7855	TENSIONER W/BRACKET	other_service
0E7890	BRKT CB MTG BACK	other_service
0E7950	TUBE DIPSTICK 3.9L CHRYSLER	other_service
0E7951	DIPSTICK OIL LEVEL 3.9L CHRYSLER	other_service
0E7952	PULLEY CRANKSHAFT 3.9L CRYSLR (1800 RPM)	other_service
0E7953	COIL IGNITION 3.9L CHRYSLER	other_service
0E7954	CABLE IGN COIL 3.9L CHRYSLER	other_service
0E7956	BRACKET IGNITION COIL	other_service
0E7994	CB 0225A 240V 2P S QJ22	other_service
0E8286	STREET EL 45D 1/2 NPT BRASS	other_service
0E8336	MAKE 3.9L CHRYSLER ENGINE (1800 RPM)	other_service
0E8445	BRACKET DIPSTICK TUBE	other_service
0E8731	PLATE FLEX DISK SPACER (1800 RPM)	other_service
0E8816	EXHAUST FLANGE 2" PIPE	other_service
0E9295	ASSY THROTTLE 28MM	other_service
0E9975	CAP VINYL 1/4" ID X 1" DP BLK	other_service
0F0199	INSULATOR CB FD FRAME 30MIL	other_service
0F0492	INSULATOR CB S (ED-3P)	other_service
0F0738	MUFFLER 7" X 9"-(2) 2" IN/2.5" OUT	other_service
0F1262	HOLDER FUSE WICKMANN 178.6150	other_service
0F1263	ADPTR RH SIDE WICKMANN 178.6191	other_service
0F1264	ADPTR LH SIDE WICKMANN 178.6192	other_service
0F1444	HEAT SHIELD R/H SIDE	other_service
0F1444A	HEAT SHEILD L/H SIDE	other_service
0F1725C	ASSY PCB 2AMP 12V UL BATT CHGR	other_service
0F1733	DECAL CUSTOMER CONNECT INSIDE	other_service
0F1823A	ENCL HSB CONTROL PANEL	other_service
0F1958	PLATE HARNESS CLAMP	other_service
0F2230	SUPPORT ENGINE 3.9L LH & RH SD	other_service
0F2353	INSULATOR CIRCUIT BR. JD/LD	other_service
0F2606	HINGE CONTINUOUS H-PANEL	other_service
0F2608	RADIATOR 598 X 568 X 49 CPL RH	other_service
0F2627A	COVER CONTROL PANEL SIDE	other_service
0F2694A	PULLEY CRANKSHAFT (3600 RPM)	other_service
0F2785	SPLITTER LOWER C4	other_service
0F2786	SLITTER C4	other_service
0F2787	SUPPORT SLITTER C4	other_service
0F2808A	EXHAUST OUTLET PIPE CPL	other_service
0F2808B	PIPE EXHAUST MUFFLER OUT	other_service
0F2820	FAN 22" DIA 10 BLADE	other_service
0F2830	MUFFLER BRACKET STIFFENER	other_service
0F2835	INNER DISCHARGE DUCT, C4	other_service
0F2962	MUFFLER STRAP	other_service
0F2981	MFLR 7" X 9" (2) 2" IN/2.5" OUT	other_service
0F2982	ENG ADAPTER MACH 3.9L HSB NSPS	other_service
0F3072	INSULATION RETAINMENT HANGER	other_service
0F3078	COVER CONTROL PANEL	other_service
0F3127	PIPE L/H SIDE 3.9L CPL	other_service
0F3133	PIPE R/H SIDE 3.9L CPL	other_service
0F3137	PAN CB CONN BOX	other_service
0F3138	COVER CB CONN BOX	other_service
0F3185	STRINGER SPLITTER C3	other_service
0F3188	STAND RH CONTROL	other_service
0F3189	STAND LH CONTROL	other_service
0F3192	SUPPORT ANGLE PCB	other_service
0F3203	WELDMENT RAD SUPPORT 3.9L C2	other_service
0F3215	DECAL CONTROL HSB	other_service
0F3217	SPACER DC ALTERNATOR PULLEY	other_service
0F3270	MTG BASE 3.9L 40KW C2	other_service
0F3312	DUCT INNER DISCHARGE TOP C2	other_service
0F3313	DUCT INNER DISCHARGE C2	other_service
0F3328	COVER ED CB SHORT STND	other_service
0F3329	COVER JD/LD CB SHRT STAND	other_service
0F3364	SPLITTER STINGER C2	other_service
0F3408	TRAY BATTERY	other_service
0F3411	STRAP BATTERY RETAINMENT	other_service
0F3438	RTR 390 30AD1 CPL	other_service
0F3439	STR 390 30AD1 CPL	other_service
0F3440	RTR 390 40AD2 CPL HI-EF	other_service
0F3441	STR 390 40AD2 CPL	other_service
0F3607	Data Label	other_service
0F3641	HARN ENG 3.9L 3600 RPM FLEX PNL (NOT SHOWN)(3600 RPM)	other_service
0F3722	PIPE EXH CPL C4 3.0L LEFT SS	other_service
0F3723	PIPE EXH CPL C4 3.0L RIGHT SS	other_service
0F3760	INSULATION CORNER POST	other_service
0F3760A	INSULATION CORNER POST	other_service
0F3760C	INSULATION DOOR	other_service
0F3760D	INSULATION DISCHARGE SIDE	other_service
0F3760E	INSULATION LOWER SPLITTER	other_service
0F3760F	INSULATION ROOF TOP	other_service
0F3760H	INSULATION DISCHARGE TOP	other_service
0F3760J	INSULATION DISCHARGE FRONT	other_service
0F3760K	INSULATION SPLITTER	other_service
0F3760L	INSULATION LOWER SPLITTER	other_service
0F3794	EXHAUST BLANKET 549MM LONG (R/H)	other_service
0F3794A	EXHAUST BLANKET 448MM LONG (L/H)	other_service
0F3795	ENGINE INSERTED VALVE 3.9L (3600 RPM)	other_service
0F3824	DECAL CUSTOMER CONNECT INSIDE	other_service
0F3869	WASHER LOCK M6-1/4	other_service
0F3890	RETAINER INSULATION (450)	other_service
0F3890A	RETAINER INSULATION (740)	other_service
0F3890B	RETAINER INSULATION (820)	other_service
0F3890C	RETAINER INSULATION (220)	other_service
0F3903A	FLEX PLATE 2 POLE 3.9L CHRY (3600RPM)	other_service
0F4051	SCREW SHC M6-1.0 X 45 G12.9	other_service
0F4051A	HARNESS CPL FUEL JUMPER	other_service
0F4051B	INSULATION DUCT SIDES	other_service
0F4051C	INSULATION DUCT	other_service
0F4073C	INSUL DUCT SIDE OR INNER DUCT	other_service
0F4110	BYPASS ORIFICE 3.9L CHRYSLER (3600 RPM)	other_service
0F4143	CB 0040A 3P 480V 225AF (3P)	other_service
0F4148	CB 0125A 3P 480V G 225AF	other_service

Parts cataloged across all variants of this engine family — verify the exact part fits your specific variant and serial number before ordering.

Common questions

What is the oil capacity of the Generac V-type?

The Generac V-type engine has an oil capacity of 3.8 liters.

What is the displacement of the Generac V-type?

The Generac V-type has a displacement of 3.9 liters with 10 cylinders.

Which generators use the Generac V-type engine?

The Generac V-type powers 17 generator set(s), including Generac GenSpec007, Generac MQT100, Generac QT 130, Generac QT 3.9L 40kW, Generac QT 5.4L.

How often should you change the oil in the Generac V-type?

The Generac V-type oil change interval is every 1000 hours.

What is a common problem with the Generac V-type engine?

A commonly reported issue on generators using the Generac V-type is: No AC output from generator.. Cause: Defective Control Module circuit board. Fix: *Contact the nearest Authorized Dealer for assistance..