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Kubota Z482B Engine

The Kubota Z482B is a 0.48 L 2-cylinder water cooled engine rated at 3600 rpm. It powers generator sets from Cummins/Onan and Kubota, including the 5.0 MDKUB, 6.0 MDKUB, MDKUB and Spec A AUX. It holds 3.78 L (1.0 gal) of oil and 2 L (0.5 gal) of coolant.

Also known as: Kubota Z482B

Part of the Kubota Z482B engine family — 2 variants share parts & fitment.

0.479 L

Displacement

Cylinders

3600 rpm

Rated speed

3.78 L

Oil capacity

On this pageService parts Specs Generator sets Maintenance Filter cross-reference FAQ Service intervals Torque & specs Fluids Fault codes Procedures

Service parts for the Z482B

The cheapest captured merchant offer per filter — see the full cross-reference below for every OEM/aftermarket option.

Air intake

1 required

1522211223Air filter$24.99eBay

Fuel system

2 required

1627143560Fuel filter$16.83NAPA

1627143560Fuel filter (primary)$16.83NAPA

Oil system

1 required

7665025430Oil filter$7.98PartsGeek

Prices captured from merchant listings; some links are affiliate links. Verify against your serial number before ordering.

Engine specifications

Oil capacity	3.78 L
Coolant capacity	2.0 L
Displacement	0.479 L
Cylinders	2
Aspiration	Water Cooled
Rated speed	3600 rpm

Generator sets powered by this engine

Shared across brands: Cummins/Onan, Kubota

Cummins/Onan 5.0 MDKUB Cummins/Onan 6.0 MDKUB Cummins/Onan MDKUBCummins/Onan Spec A AUXKubota DKX-AUXAKubota DKX-AUXA 2A

How to read your Kubota engine serial & model number →

Common problems

Engine does not crank
Cause: Battery dead
Fix: Check battery per Checkout [A] and recharge or replace; check battery charger operation per Checkout [C]
Engine cranks but does not start
Cause: Engine not getting fuel (exhaust smoke should be blue-white and fuel flow steady from fuel return line)
Fix: Check fuel system: test fuel pump per Checkout [H], test fuel tank level, shut-off valves, fuel lines and connections, fuel filters, and injection pump
Output voltage too high or too low
Cause: Engine not running at correct RPM
Fix: Set RPM per instructions in appropriate engine manual; also see CHANGING GENSET FREQUENCY, in Section 4 of this manual
No AC output voltage at rated engine RPM
Cause: Load circuit breakers open (overload)
Fix: Locate cause of overload and correct as required; reset breaker, or replace if bad
No Sleeper Heat
Cause: Low coolant level
Fix: Check coolant level.
No Sleeper Air Conditioning
Cause: Power unit air inlet covered
Fix: Move inlet cover to open position.
Engine starts but stops after running several seconds
Cause: Control circuit breaker CB8 opened
Fix: Check B+ wiring for shorts to ground causing excessive current draw; if none, check control circuit breaker CB8 for improper wiring
Engine Starts and Runs, Then Stops
Cause: Fuel level is below fuel pickup tube or AUX engine oil level is low
Fix: Check fuel and oil level and refill if low.
Unstable voltage, engine speed stable
Cause: Broken wires or loose connections on voltage regulator assembly
Fix: Check wiring harness from regulator assembly to end bell per TEST [F]; repair as required
Unbalanced generator output voltage
Cause: Output still unbalanced with load removed at generator terminals
Fix: Check load for ground faults and correct as necessary
Glow Plugs Do Not Heat
Cause: Open circuit breaker CB1
Fix: Check circuit breaker. If open, locate and correct cause of overload.
Low Battery Voltage
Cause: Weak or discharged batteries due to: Low electrolyte level in batteries
Fix: Replenish electrolyte and recharge battery.
AUX Control Run Lamp or Time Meter Inoperative
Cause: Open circuit in control wiring
Fix: Check continuity between sleeper control and control assembly (A1).
Weakness and Sleepiness
Fix: Get out into the fresh air immediately. If symptoms persist, seek medical attention. Shut down the unit and do not operate until it has been inspected and repaired.
Vomiting
Fix: Get out into the fresh air immediately. If symptoms persist, seek medical attention. Shut down the unit and do not operate until it has been inspected and repaired.

Compiled from service & troubleshooting documentation across every generator set that uses the Kubota Z482B.

Maintenance schedule

Item	Spec	Capacity	Part #	Interval
Air filter	Air Filter		1522211223	720 hr	Amazon eBay $24.99
Fuel filter	ASTM 2-D (No. 2 Diesel) or ASTM 1-D (No. 1 Diesel), minimum Cetane number 45		149-2100	500 hr	Amazon eBay
Oil filter			185-7444	250 hr	Amazon eBay $29.95 NAPA $9.09 KuduParts $11.00 FridayParts $13.23
Battery	Battery Charge Mode		—	1800 hr
Belt	Drive Belts		—	3600 hr
Coolant	50/50 mixture of ethylene glycol anti-freeze and water; reliable brand with rust and corrosion inhibitor; no stop-leak additive	2.0 liters	—	500 hr
Coolant filter	Cooling System		—	1800 hr
Oil	API Class CD or better (CD, CE); SAE viscosity grade per oil viscosity vs. temperature chart	5.0 liters	—	250 hr
Spark plug	Sleeper - Heat Mode		—	3600 hr

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

Service intervals

Item	Action	Hours	Months	Notes
Coolant level	Check	8 hr		Daily or after 8 hours.
Engine oil level	Check	8 hr		Daily or after 8 hours.
Exhaust system	Inspect	8 hr		Every startup and after every eight hours of operation
Fuel level	Check	8 hr		Daily or after 8 hours.
Oil level	Check	8 hr		Daily or after 8 hours.
Set	Inspect	8 hr		Daily or after 8 hours. Check for oil, fuel, cooling and exhaust system leaks; check exhaust audibly and visually with genset running.
generator set	Inspect	8 hr		Daily/8hr: general inspection for oil, fuel, coolant, or exhaust leaks; visual/audible check of exhaust system while running
Crankcase oil	Drain	35 hr		First service — Perform after first 35 hours of operation on new genset
Battery specific gravity	Check	100 hr	1 mo	Monthly or after 100 hours.
Water/sediment from fuel filter	Drain	100 hr	1 mo	Monthly or after 100 hours.
pump belt tension	Check	100 hr	1 mo	visually check for slipping
crankcase oil and filter	Change	250 hr	6 mo	First service — first service at 35 hours on new unit; more often in dusty conditions; annually if used less than 250 hours
Fuel filter	Change	500 hr	12 mo	Yearly or after 500 hours.
Generator assembly	Clean	500 hr	12 mo	Clean when dust and dirt accumulate.
Genset brushes	Check	500 hr	12 mo	To be performed by authorized service technician.
cooling system	Clean	500 hr	12 mo	flush and clean cooling circuit
fuel filter	Replace	500 hr	12 mo
generator	Clean	500 hr	12 mo
generator brushes	Check	500 hr	12 mo	to be performed by an authorized service technician
Generator bearing	Inspect	1000 hr		Check for evidence of outer case rotation
Coolant	Change		12 mo
Coolant pressure cap	Replace		24 mo	For optimum performance
Fuel filter water/sediment	Drain	100 hr	1 mo	Monthly
Generator bearing	Replace		60 mo	Bearing grease gradually deteriorates due to oxidation
Generator brushes	Inspect		6 mo	Inspect for wear and cleaning

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
Other	Battery charge alternator maximum output	10	amperes	regulated
Other	Battery charge alternator maximum output (regulated)	10	amperes
Other	Battery cranking performance at 0° F (-18° C)	360	ampere	minimum
Other	Battery electrolyte specific gravity	1.260	at 80°F (27°C)	charge if less than 1.215
Other	Battery electrolyte specific gravity (charge if below)	1.215
Other	Battery minimum cranking performance	360	ampere	@ 0°F (-18°C)
Other	Battery specific gravity (charge if less than)	1.215
Other	Battery specific gravity at full charge	1.260	at 80°F (27°C)	stop charging when reached
Other	Bore and stroke	67 x 68	mm (2.64 x 2.68 inches)
Other	Coolant mixture	50-50	ethylene glycol and distilled water
Other	DC control breaker	15	ampere
Other	Exhaust hose vertical rise	48	inches (1.2 m)	maximum
Other	Exhaust line downgrade	1/2	inch per linear foot (42 mm/m)	minimum
Other	Frequency adjustment stop point (50 to 60 Hz conversion)	63	Hz	no load, low-speed adjustment screw turned in
Other	Frequency adjustment stop point (60 to 50 Hz conversion)	53	Hz	no load, low-speed adjustment screw turned out
Other	Frequency regulation	5	percent	no load-rated load
Other	Frequency regulation, no load-rated load	5	percent
Other	Fuel inlet/return fitting	1/8-27 NPT Female
Other	Fuel pump lift (self-priming)	1.2	meters (48 inches)
Other	Preheat time above 86°F (30°C)	10	seconds	above 86°F (30°C)
Other	Preheat time below 32°F (0°C)	30	seconds	below 32°F (0°C)
Other	Preheat time between 32° to 50°F (0° to 10°C)	20	seconds	between 32° and 50°F
Other	Preheat time between 50° to 86°F (10° to 30°C)	15	seconds	between 50° and 86°F
Other	Pump belt tension	22	pounds (10 kg) deflects 0.4 inch (10 mm)	finger pressure at middle of belt
Other	Pump belt tension	22 pounds (10 kg) finger pressure; deflection 0.4 inch (10 mm)		at middle of belt
Other	Raw water flow at exhaust outlet	3	gal/min (11.4 liter/min)
Other	Total air per minute required (cooling and combustion)	4.25	m3/min. (150 ft3/min.)
Other	Total air required (cooling and combustion)	4.25	m3/min (150 ft3/min)
Other	Total displacement	479	cc (29.23 cubic inches)
Other	Total displacement	719	cc (43.89 cubic inches)
Other	Voltage regulation, no load-rated load	+/-2	percent
Other	Voltage regulation, no load-rated load	±2	percent
Pressure	Coolant pressure cap rating	7	psi	(48 kPa)
Pressure	Cooling system pressure cap rating	7	psi (48 kPa)
Pressure	Engine oil pressure	28 to 64	psi (294 to 543 kPa)	engine at operating temperature
Pressure	Exhaust back pressure	3.0	inches of mercury (76 mm Hg; 10 kPa)	maximum
Pressure	Fuel pump output pressure	3.5 to 6	psi (24-41 kPa)	start position, static test
Pressure	Low oil pressure switch S15	10	psi (170.3 kPa)	closes, deactivates shutdown relay and stops engine
Pressure	Maximum back pressure at injector fuel return line fitting	15	psi (103 kPa)	maximum
Pressure	Oil pressure	28 to 64	psi (294 to 543 kPa)	engine at operating temperature
Pressure	Oil pressure at operating temperature	28 to 64	psi (294-543 kPa)	engine at operating temperature
Pressure	Oil pressure switch actuation	9	psi (62 kPa)	fault circuit actuates if pressure drops below
Resistance	Rotor field resistance (F1-F2)	22.1	ohms ± 10%
Resistance	Rotor field resistance (F1-F2)	27.6	ohms ± 10%
Resistance	Rotor/stator insulation resistance (grounds test)	100,000	ohms (minimum, or questionable)	megger or insulation resistance meter, 500 VDC
Resistance	Stator winding resistance Q1-Q2	1.88	ohms ± 5%
Resistance	Stator winding resistance Q1-Q2	2.238	ohms ± 5%
Resistance	Stator winding resistance T1-T2	0.186	ohms ± 5%
Resistance	Stator winding resistance T1-T2	0.371	ohms ± 5%
Resistance	Stator winding resistance T3-T4	0.186	ohms ± 5%
Resistance	Stator winding resistance T3-T4	0.371	ohms ± 5%
Speed	Engine speed	3000	rpm	50 Hz sets
Speed	Engine speed	3600	rpm	60 Hz sets
Speed	Engine speed 50 Hz sets	3000	rpm
Speed	Engine speed 60 Hz sets	3600	rpm
Temperature	Coolant temperature	165 to 195	°F (74 to 91 °C)	depending on load and ambient temperature
Temperature	Coolant thermostat switch	222	F	closes at (106 C)
Temperature	Coolant thermostat switch closes	222	°F (106 °C)
Temperature	High engine (coolant) temperature switch S17	222	°F (105.6°C)	closes, activates shutdown
Temperature	High exhaust temperature shutdown switch closes	221 to 239	°F (105 to 115 °C)

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 ethylene glycol and distilled water	Fleetguard ES Compleat/EG Premix			MDKUB 2 L, MDKWB 3.5 L
Coolant	50/50 ethylene glycol antifreeze and clean water, with rust inhibitor, no stop-leak				Fill recovery tank half way between high and low marks
Coolant	50/50 mixture of ethylene glycol anti-freeze and water	contains rust and corrosion inhibitor; no stop-leak additive	above -37°C	2.0 liters	Freeze protection to -34°F (-37°C).
Coolant	50/50 ethylene glycol/water		above -34°C		Freeze protection to -34°F (-37°C). MDKUB capacity 2 liters (2.1 qt); MDKWB 3.5 liters (3.7 qt). Use reliable brand with rust/corrosion inhibitor; no stop-leak additive.
Engine oil	15W40	Premium Blue E			Lubrication oil; MDKUB 3.78 L, MDKWB 4.73 L
Engine oil	API Class CD or better (CD, CE); SAE viscosity grade per ambient temperature			3.78 liters	Use same brand when adding oil; do not overfill.
Engine oil	API SF/CD	API SF/CD			MDKUB capacity with filter 3.78 liters (4 quarts); MDKWB 4.73 liters (5 quarts). Select viscosity per Table 1. Do not use synthetic or non-detergent oil.
Engine oil	SAE viscosity grade per oil viscosity vs. temperature chart	API Class CD or better (CD, CE)			Oil capacity with filter: MDKUB 3.78 liters (4 quarts); MDKWB 4.73 liters (5 quarts). Lubrication oil Premium Blue E 15W40 referenced.
Fuel	ASTM 2-D (Diesel No. 2) or ASTM 1-D (Diesel No. 1), minimum cetane number 45	ASTM			Use No. 1 diesel below 32°F (0°C) and for extended light-load operation
Fuel	ASTM 2-D (No. 2 Diesel) or ASTM 1-D (No. 1 Diesel)	Minimum Cetane number 45; low sulfur content fuel with cloud point at least 10 degrees below lowest expected fuel temperature	below 0°C		Use No. 1 diesel when ambient temperatures are below 32 F (0 C) and during long periods of light engine load.
Fuel	ASTM 2-D (No. 2 Diesel) or ASTM 1-D (No. 1 Diesel); minimum Cetane number 45	low sulfur content; cloud point at least 10 degrees below lowest expected fuel temperature			Use No. 1 diesel when ambient below 32°F (0°C) and during long periods of light load.
Fuel	No. 2 diesel				Gas oil (Red Diesel, Fuel Oil type A1 or A2)

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

Fault codes

Code	Name	Meaning	Severity	Action
1	High engine coolant temperature	One blink indicates shutdown due to high engine coolant temperature	Shutdown	Check coolant level, pump belt tension, raw water flow and cooling system cleanliness
2	Loss of engine oil pressure	Two blinks indicate shutdown due to a loss of engine oil pressure	Shutdown	Check oil level, add oil if low, inspect for leaks
3	Service fault	Three blinks indicate a service fault. Press Stop once to cause the two-digit, second-level shutdown code to blink. The first set of blinks represents the tens digit and the second set the units digit	Shutdown	Press Stop once to read the two-digit second-level code; contact an Onan dealer or distributor
4	Cranking time exceeded	Four blinks indicate that cranking time exceeded 35 seconds	Shutdown	Check the fuel supply and make sure the fuel system has been primed

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

Procedures

Adjust Output Voltage (Faceplate) adjustment

⚠ High voltages within the control cabinet can cause severe personal injury or death.

Tools: voltmeter

Connect a voltmeter to the set output.
Power the set.
Loosen the lock nut and set the faceplate voltage adjustment trim pot to mid range.
Lock the pot into position by tightening the lock nut.

Changing Genset Frequency (50/60 Hz) adjustment

⚠ Disconnect starting battery positive terminal first to disable the genset before adjustments

Tools: Digital volt-ohmmeter, Frequency meter

Turn the generator set off and open the control box
Move the 60 Hz/50 Hz switch on the regulator board to the desired value
Remove all load and connect a frequency meter across the output
Loosen and back off the lock nuts on the speed adjustment screws
Turn the set on with no load and adjust low/high speed screws per conversion direction
Tighten lock nuts once target frequency is reached (53 Hz or 63 Hz stop points)
Center the voltage adjustment pot and adjust output voltage to rated value ± 5 VAC
Fine tune output voltage with the faceplate pot and recheck

Pump Belt Adjustment adjustment

⚠ Do not operate genset without belt guard in place.

⚠ Too much tension may reduce pump belt life.

Tools: finger pressure

Disconnect battery cables, negative first, and remove housing and belt guard.
Loosen bottom pivot bolt on alternator.
Loosen bolt through long slot in alternator mounting bracket.
Slide alternator until tension is right.
Belt tension is correct when 22 pounds (10 kg) finger pressure at middle of belt deflects it about 0.4 inch (10 mm).

Voltage Adjustment adjustment

⚠ Contact with high voltage can cause severe injury or death; use insulated tools and stand on a dry mat

Tools: Voltmeter, Flat-blade screwdriver

Attach a voltmeter securely to the L1 and L2 leads
Start the generator set and place a typical load on its output
Loosen the hex locking nut and adjust the faceplate voltage pot to correct voltage (117 VAC at 60-61 Hz for most 60 Hz applications)
If needed, center faceplate pot and adjust with the regulator board pot, then fine tune at the faceplate

Fuel Pump Test diagnostic

Tools: 0-15 psi pressure gauge

Disconnect fuel line at pump outlet and connect a 0-15 psi pressure gauge
Push Start/Stop switch to START and hold until pressure stabilizes (3.5-6 psi)
Repeat the test with the engine running
If pressure is below 3.5 psi, check for restrictions or relocate pump closer to tank; replace if defective

Test Fuel System diagnostic

⚠ Fuel leakage in boats presents fire and explosion hazards that can result in severe personal injury or death.

After installation, test the fuel system for tightness per USCG specification 33CFR183.542.
Any leak must be found and corrected before putting the fuel system into service.

Voltage Regulator Test diagnostic

⚠ Do not touch electrical wiring or components during testing

Tools: Volt-ohmmeter (diode check mode)

Stop the generator set and disconnect starting battery, negative lead first
Unscrew the voltage regulator from the control box
Disconnect the voltage regulator from the wiring harness
Set the volt-ohmmeter to diode check
Test terminal pairs per Table 6-1 and compare readings to good/bad values

Install Coolant Recovery Tank installation

Use the bracket as a template to locate mounting holes.
Allow a minimum of 2 inches (51 mm) from the top of the tank to any upper structure.
Mount with two 5/16 inch (8mm) bolts.
Use a length of hose from the kit between the radiator overflow and the dip-tube connector on the recovery tank.
Allow sufficient hose lengths so the tank can be easily removed from the bracket to add coolant.

Mount Generator Set installation

Tools: drill

Remove the carriage bolts, nuts and washers from the drip tray.
Drill holes in the floor or deck in the positions indicated.
Use 3/8” bolts or the nearest metric equivalent to mount the generator set.

Mount Remote Start-Stop-Preheat Panel installation

⚠ The electrical code does not allow the remote-control harness or wiring to be routed in the same conduit with AC wiring.

⚠ Be sure to seal all openings made for the wiring so exhaust or fuel vapors cannot enter the living quarters.

Tools: screwdriver

Unscrew the two hold-down screws that hold the panel in place.
Remove and discard the short 6” wiring harness connecting control panel P1 to genset J1.
Disconnect the leads that connect the running time meter to the terminal block inside the control box.
Replace the short harness with a longer harness that will reach the control panel mounting location.
Route the harness through the opening at the side of the control box.
Use the blank panel provided with the set to cover the space where the removable control panel had been.

Battery Care maintenance

⚠ Batteries present explosion hazard.

⚠ Battery electrolyte can cause severe eye damage and burns.

Tools: battery hydrometer, terminal puller tool

Keep battery case clean and dry.
Make certain cable connections are clean and tight; remove corrosion with ammonia solution or baking soda solution.
Identify positive and negative cables before making connections; connect negative cable last.
Maintain electrolyte level by adding distilled water to split-level marker in each cell.
Check specific gravity with hydrometer; charge if less than 1.215; stop charging at 1.260 at approximately 80°F (27°C).

Break-in procedure maintenance

⚠ Carbon deposits from prolonged no-load running can clog injectors, glaze cylinder walls, and stick piston rings and valves

Drain crankcase oil after the first 35 hours of operation
Minimize unloaded running time during break-in; connect an electrical load if extended running is required

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 Kubota Z482B family

Part #	Description	Category
810-239	Air Filter	Air filter
ES2085s	35 AMP ALTERNATOR	Alternator
185-5428	Regulator, DC Voltage	Avr
185-7396	Regulator, DC Voltage	Avr
305-0854-04	Regulator, AC Voltage (VR1)	Avr
511-0183	Water Pump Belt	Belt
810-247	Pump Belt	Belt
M1995s	Radiator - Condenser Mounting Bolts (6)	Bolt
212-1285-S0	Block Assy, Brush (Includes Brushes & Springs)	Brush
214-0103	Brush, Generator	Brush
M1928s	Brush Block Assembly	Brush block
12010973	WEATHERPACK FEMALE CONNECTOR (FEM)	Connector
12015792	WEATHERPACK MALE CONNECTOR (MALE)	Connector
810-253	Coolant Filter	Coolant filter
149-1908-05	Separator, Fuel/Water	Fuel filter
149-1914-01	Element (Includes Seals)	Fuel filter
149-2100	Filter Assembly, Fuel Element. Filter	Fuel filter
149-2106	Element	Fuel filter
155-3216	Kit, Water Separator	Fuel filter
810-246	Fuel Filter	Fuel filter
A026K278	Element, Fuel Filter	Fuel filter
132-0342	Gasket, Water Pump	Gasket
132-0517	Gasket, Water Pump	Gasket
154-2876	Gasket, Exhaust Elbow	Gasket
168-0223	Kit, Engine Overhaul Gasket	Gasket
185-2238	Gasket, Thermostat	Gasket
185-5337	Gasket	Gasket
185-5339	Gasket, Cylinder Head	Gasket
185-5434	Gasket, Water Pump	Gasket
185-5493	Gasket, Oil Pan	Gasket
185-5528	Gasket, Cylinder Head Cover	Gasket
185-6851	Gasket	Gasket
185-5421	Plug, Glow	Glow plug
503-0191	Hose, Drain (305mm Long)	Hose
503-1353	Hose, Exhaust (2" x 10')	Hose
503-1496	Hose, Coolant	Hose
503-1620	Hose – Bulk (3/8" ID) (Order by the Foot)	Hose
503-1692	Hose (5/16 I.D. x 120" Lg.)	Hose
503-1840	Hose, Cooling	Hose
503-1841	Hose, Cooling	Hose
503-1844	Hose, Cooling	Hose
503-1850	Hose, Cooling	Hose
503-1858	Hose, Cooling	Hose
503-1859	Hose, Cooling	Hose
503-1893	Hose, Intake	Hose
503-2013	Hose, Wet Exhaust (2" I.D. x 4.75" Long)	Hose
132-0310	Impeller kit w/cover & gasket	Impeller
132-0311	Sea Water Pump Impeller	Impeller
132-0493	Impeller	Impeller
185-5715	Impeller, Water Pump	Impeller
181-9084	Kit Holder, Nozzle	Injector
185-5622	Nozzle	Injector
185-6738	Holder Assy, Nozzle	Injector
EXS-1190s8	EXHAUST MUFFLER	Muffler
185-5801	Oil Filter	Oil filter
185-7444	Filter, Oil	Oil filter
810-245	Oil Filter	Oil filter
100-3478-01	Cruise Kit	Service part / kit
100-3478-07	Cruise Kit	Service part / kit
130-3574	Kit, Coolant Recovery	Service part / kit
130-4434	Pencil, Zinc	Service part / kit
149-2046	Kit, Metal Bowl Replacement (Includes Plug, O-Rings and Drain Assy)	Service part / kit
155-1002	Strainer, Water Pickup	Service part / kit
155-2029	Muffler, Marine	Service part / kit
155-3217	Kit, Muffler/Separator	Service part / kit
155-3239	Kit, Resonator (Includes Resonator and Instruction Sheet)	Service part / kit
185-5495	Part 185-5495	Service part / kit
185-5523	Element, Breather	Service part / kit
212-1276-03	Spring, Generator Brush	Service part / kit
981-0514	Kubota Workshop manual	Service part / kit
981-0515	Red Dot Service Manual	Service part / kit
CS1312-1	CROSS-SECTION VIEW HULL STRAINER SEA COCK RECOMMENDED WATER STRAINER OR FILTER FLUSH THROUGH-HULL FITTING TO GENSET	Service part / kit
EXS1191S	siphon break	Service part / kit
EXS1192s	siphon break	Service part / kit
132-0336	Pump, Sea Water	Pump
132-0492	Pump Assy, Water	Pump
149-2047	Pump Assy (Includes Plunger, Retainer, Shaft, Check Ball, Knob and Screw)	Pump
149-2546	Pump, Fuel (E12)	Pump
185-5412	Pump, Oil	Pump
185-5433	Pump Assy, Water	Pump
185-5751	Pump, Injection	Pump
149-2045	O-Ring Kit (Includes Seal and Plunger)	Seal
185-3078	O-Ring	Seal
185-5410	Seal, Oil	Seal
185-5437	Seal, Oil	Seal
185-5985	Seal, Heat	Seal
185-5492	Switch, Oil Pressure	Sensor
193-0244	Sender, Oil Pressure (E1)	Sensor
193-0318	Sender, Water Temperature	Sensor
193-0430-01	Sender, Oil Pressure	Sensor
193-0457-01	Sender, Water Temperature (E2)	Sensor
309-0578	Switch, Oil Pressure (S15)	Sensor
309-0597	Part 309-0597	Sensor
309-0673	Thermostat, High Temp Engine (S17)	Sensor
185-5458	Thermostat	Thermostat
M19946	BYPASS THERMOSTAT	Thermostat
FS1886s	Throttle Control Levers	Throttle control levers

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

Aftermarket parts that fit this engine

16851-22010 FridayParts $35.24 16851-22012 FridayParts $35.24 16851-22015 FridayParts $35.24 16851-22017 FridayParts $35.24 25-15003-00 FridayParts $19.50 L4294845 FridayParts $124.80 4294125 FridayParts $124.80 4388423 FridayParts $129.99 17580-72850 KuduParts $21.00 FridayParts $23.27 16853-23010 FridayParts $512.65 16853-01010 FridayParts $659.99 16853-01017 FridayParts $659.99 FP-XP-0025667 J106-AUS FridayParts $59.90 KC120H FridayParts $43.50 KC120HC FridayParts $34.49 FP-XP-0020041

Parts listed by aftermarket suppliers as fitting this engine — leads compiled from supplier catalogs; verify the exact part for your serial number.

Filters for this engine

Air filter: Kubota 1522211223 Donaldson P102745 Wix 46270 Ac Delco A527C Baldwin PA1865-FN
Fuel filter: Kubota 1627143560 Donaldson P502166 Wix 33263 Baldwin PF981
Fuel filter (primary): Kubota 1627143560 Donaldson P502166 Wix 33263 Baldwin PF981
Oil filter: Kubota 7665025430 Donaldson P550162 Wix 51334 Ac Delco X45 Baldwin B179

Cross-referenced via Donaldson + OEM/engine-maker interchange — options to verify against your serial number, not confirmed for every exact variant.

Also used in

Hitachi 08 — Construction Equipment
Hitachi EX8 — Excavator Compact
Hitachi EX8-2 — Excavator Compact
Hitachi EX8-2B — Excavator Compact

Other equipment known to use this engine, via filter-application cross-reference — useful for sourcing parts even when your exact machine isn't listed elsewhere on this page.

Common questions

What is the oil capacity of the Kubota Z482B?

The Kubota Z482B engine has an oil capacity of 3.78 liters.

What is the displacement of the Kubota Z482B?

The Kubota Z482B has a displacement of 0.479 liters with 2 cylinders.

Which generators use the Kubota Z482B engine?

The Kubota Z482B powers 6 generator set(s), including Cummins/Onan 5.0 MDKUB, Cummins/Onan 6.0 MDKUB, Cummins/Onan MDKUB, Cummins/Onan Spec A AUX, Kubota DKX-AUXA.

What oil filter does the Kubota Z482B use?

The Kubota Z482B uses oil filter part numbers Kubota 7665025430, Donaldson P550162, Wix 51334.

What fuel filter does the Kubota Z482B use?

The Kubota Z482B uses fuel filter part numbers Kubota 1627143560, Donaldson P502166, Wix 33263.

What air filter does the Kubota Z482B use?

The Kubota Z482B uses air filter part numbers Kubota 1522211223, Donaldson P102745, Wix 46270.

How often should you change the oil in the Kubota Z482B?

The Kubota Z482B oil change interval is every 250 hours.

What is a common problem with the Kubota Z482B engine?

A commonly reported issue on generators using the Kubota Z482B is: Engine does not crank. Cause: Battery dead. Fix: Check battery per Checkout [A] and recharge or replace; check battery charger operation per Checkout [C].