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Cummins/Onan KTA38-G5 Engine

The Cummins/Onan KTA38-G5 is a 38 L 12-cylinder turbocharged-aftercooled engine rated at 1500 rpm. It powers generator sets from Cummins/Onan, including the 815DFJD, C1000 D5, C1010 D5 P and C1100 D5B. It holds 145 L (38.3 gal) of oil and 260 L (68.7 gal) of coolant.

Also known as: Cummins KTA38-G5, KTA38G5

Part of the Cummins/Onan KTA38 engine family — 20 variants share parts & fitment.

38.0 L

Displacement

Cylinders

1500 rpm

Rated speed

145.0 L

Oil capacity

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

Engine specifications

Oil capacity	145.0 L
Coolant capacity	260.0 L
Displacement	38.0 L
Cylinders	12
Aspiration	Turbocharged-Aftercooled
Rated speed	1500 rpm

Generator sets powered by this engine

Cummins/Onan 815DFJDCummins/Onan C1000 D5Cummins/Onan C1010 D5 PCummins/Onan C1100 D5BCummins/Onan K38 SeriesCummins/Onan KTA38

How to read your Cummins/Onan engine serial & model number →

Service intervals

Item	Action	Hours	Months	Notes
Вентиляционные устройства генератора	Check	10 hr		10 часов / еженедельно
Весь агрегат	Test	10 hr		Включение минимум на час, предпочтительно с нагрузкой 50 %; 10 часов / еженедельно
Подключение вспомогательной клеммной коробки	Check	10 hr		10 часов / еженедельно
Уровень охладителя воды	Check	10 hr		10 часов / еженедельно
Уровень смазочного масла в двигателе	Check	10 hr		10 часов / еженедельно
Уровень топлива	Check	10 hr		10 часов / еженедельно
Уровень электролита в батарее	Check	10 hr		10 часов / еженедельно
Вентиляционный клапан топливного бака	Check	100 hr		100 часов / ежемесячно (положение отметки в таблице)
Все переключатели (в т.ч. двигателя)	Test	100 hr		100 часов / ежемесячно
Осадок в топливном баке	Drain	100 hr		100 часов / ежемесячно (положение отметки в таблице)
Отверстие и внутреннее пространство генератора	Clean	100 hr		Очистка сухим воздухом; 100 часов / ежемесячно
Соленоид подачи топлива	Check	100 hr		100 часов / ежемесячно
Уровень зарядки батареи гидрометром	Test	100 hr		100 часов / ежемесячно
Воздушный фильтр (у масляного – уровень масла)	Check	200 hr		200 часов / ежегодно
Все болты и гайки	Check	200 hr		Проверка и затягивание при необходимости; 200 часов / ежегодно
Все реле распределительной аппаратуры	Test	200 hr		200 часов / ежегодно
Кабельные контакты батареи	Clean	200 hr		200 часов / ежегодно; зачистка и смазка
Линии топлива, воздуха и выхлопная система на протечки	Check	200 hr		200 часов / ежегодно
Натяжение клиновидного ремня	Check	200 hr		200 часов / ежегодно
Плавкие предохранители и отключающие устройства	Check	200 hr		200 часов / ежегодно
Подшипники генератора	Lubricate	200 hr		200 часов / ежегодно
Проверка агрегата изготовителем	Inspect	200 hr		200 часов / ежегодно
Противовибрационные устройства	Check	200 hr		При наличии таковых; 200 часов / ежегодно
Смазочное масло	Change	200 hr		200 часов / ежегодно
Чистка всего агрегата и наружной поверхности панели управления	Clean	200 hr		200 часов / ежегодно
Чистота контакторов и контактов прерывателей	Check	200 hr		200 часов / ежегодно
Air cleaner element - restriction	Check	250 hr	6 mo	Replace air cleaner element as required
Air compressor air cleaner element	Replace	250 hr	6 mo	Cummins two-cylinder compressor
All belts	Check	250 hr	6 mo
Belt tension	Check	250 hr	6 mo	Measure in center span of pulleys; fan idler pulley design self-tensions
Belts	Check	250 hr	6 mo	Replace cracked or frayed belts
Coolant filter	Change	250 hr	6 mo	At each oil and filter change interval
Cooling fan	Check	250 hr	6 mo	Check for cracks, loose rivets, bent or loose blades
Cooling system additives (DCA4)	Check	250 hr	6 mo	Check concentration whenever coolant is added between filter changes
Crankcase breather tube/hose	Check	250 hr	6 mo	Remove and check internally for obstructions or sludge; clean or replace
Engine oil	Change	250 hr	6 mo	Whichever occurs first
Engine oil and oil filters	Change	250 hr	6 mo	Whichever occurs first
Fan idler pivot arm	Lubricate	1500 hr	12 mo	Water pump type grease until grease appears
Fuel filter	Replace	250 hr	6 mo	Clean area around fuel filter head first
Hoses	Inspect	1500 hr	12 mo	Check/replace as required

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	Crankshaft end clearance	0.13 MIN / 0.51 MAX	mm
Clearance	Crankshaft end clearance	0.13 to 0.51	mm	engine mounted in unit
Clearance	Fan hub bearing end clearance	0.03 MIN / 0.15 MAX	mm
Clearance	Fan hub bearing end clearance	0.03 to 0.15	mm
Clearance	Thermostat seal installation depth	no more than 0.51	mm	below top of cast edge
Clearance	Turbocharger BB (RR-151) and (RR-153) end clearance	0.09 MIN / 0.13 MAX	mm
Clearance	Turbocharger BB bearing radial clearance - RR-151	0.75 MAX	mm	0.030 in
Clearance	Turbocharger BB bearing radial clearance - RR-153	0.55 MAX	mm	0.021 in
Clearance	Turbocharger axial end play - HC5A	0.05 MIN / 0.13 MAX	mm
Clearance	Turbocharger axial end play - HT7100	0.06 MIN / 0.16 MAX	mm
Clearance	Turbocharger axial end play - T18A	0.10 MIN / 0.23 MAX	mm
Clearance	Turbocharger radial clearance compressor impeller - HC5A	0.15 MIN / 0.45 MAX	mm
Clearance	Turbocharger radial clearance turbine wheel - HC5A	0.20 MIN / 0.55 MAX	mm
Gap	Heat exchanger zinc plug erosion limit A	approximately 19	mm	0.75 in; new 51 mm [2 in]
Gap	Heat exchanger zinc plug erosion limit B	approximately 6.4	mm	0.25 in; new 16 mm [0.625 in]
Other	Air compressor discharge carbon deposit thickness limit	2	mm	1/16 in
Other	Air starting motor minimum air pressure	480	kPa
Other	Alternator belt tension	356	N	Burroughs tension gauge ST-1293
Other	Fan belt tension (20, 22, 24 inch fan center)	2668.9 to 2891.3	N	two pulley fan drive
Other	Fan belt tension verification (28 inch fan center)	2891.3 to 3336.2	N	two pulley fan drive
Other	HVT non-top stop injector travel adjustment	10.234	mm
Other	Maximum intake restriction, clean air filter element	380	mm H2O
Other	Maximum intake restriction, dirty air filter element	635	mm H2O
Other	Maximum vibration damper thickness - Houdaille	66.38	mm	2.574 in
Other	Maximum vibration damper thickness - Made in England Before F-82	65.91	mm	2.595 in
Other	Maximum vibration damper thickness - Made in England F-82 and After	65.66	mm	2.585 in
Other	Minimum cranking speed without starting aid	150	RPM
Other	PTD injector travel limits	7.77 to 7.87	mm
Other	PTD injector travel verification specification	7.80 MIN / 7.82 MAX	mm
Other	PTD non-top stop injector travel adjustment	7.82	mm
Other	PTD non-top stop injector travel limits	7.77 to 7.87	mm
Other	Turbocharger end play - AiResearch T18A	0.10 to 0.23	mm
Other	Turbocharger end play - HT100	0.06 to 0.16	mm
Other	Turbocharger end play - Holset HC5A	0.05 to 0.13	mm
Other	Two pulley fan drive belt tension (set)	2668.9 to 2891.3	N	600 to 650 lbf
Other	Two pulley fan drive belt tension (verify)	2891.3 to 3336.2	N	650 to 750 lbf
Other	Vibration damper maximum thickness - Houdaille	65.38	mm
Other	Vibration damper thickness variation (four readings 90 degrees apart)	must not vary more than 0.25	mm	0.010 in
Other	Vibration damper thickness variation - maximum	0.25	mm	four locations 90 degrees apart
Other	Глубина фундамента/цоколя и выступ за пределы агрегата	не менее 150	мм (6 дюймов)
Other	Минимальное расстояние от генератора до стены, резервуара или панели в машинном зале	1	м
Other	Нагрузка на грунт (ННГ) от агрегата, охладителя, топлива и фундамента	менее 9800	кг/м2 (2000 фунтов на кв. фут) или 96 кПа	требует проверки по местным нормам
Other	Площадь впускного отверстия воздуха для агрегатов с радиаторным охлаждением	в 1,5-2 раза больше площади радиатора
Other	Просвет выхлопной трубы глушителя	12	дюйма (300 мм)	двигатель QSK60
Other	Просвет выхлопной трубы глушителя	3	дюйма (76 мм)	двигатели B3.3, 4B, 6B
Other	Просвет выхлопной трубы глушителя	4	дюйма (100 мм)	двигатель 6C
Other	Просвет выхлопной трубы глушителя	6	дюйма (152 мм)	двигатели L, N, K19, V28
Other	Просвет выхлопной трубы глушителя	6×2	дюйма (152 мм)	двигатели K38, QSK30
Other	Просвет выхлопной трубы глушителя	8	дюйма (200 мм)	двигатели K50, QSK15
Other	Прочность бетона фундамента на сжатие (28 суток)	не менее 17200	кПа (2500 фунтов на кв. дюйм)
Pressure	Coolant pressure cap minimum	50	kPa	7 psi
Pressure	Exhaust back pressure - maximum	75	mm Hg	at rated speed and load
Pressure	Exhaust back pressure maximum	75	mm Hg	3 in Hg, at rated speed and load
Pressure	Maximum allowable intake restriction - clean filter element	380	mm H2O	15 in H2O
Pressure	Maximum allowable intake restriction - dirty filter element	635	mm H2O	25 in H2O
Pressure	Maximum allowable restriction to fuel pump - clean filter	100	mm Hg	4 in Hg, at rated power
Pressure	Maximum allowable restriction to fuel pump - dirty filter	200	mm Hg	8 in Hg, at rated power
Pressure	Maximum allowable restriction to pump - clean filter	100	mm Hg	at rated power
Pressure	Maximum allowable restriction to pump - dirty filter	200	mm Hg	at rated power
Pressure	Maximum allowable return line restriction	63	mm Hg

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	Notes
Coolant	50 percent ethylene glycol / 50 percent water	Low-silicate antifreeze meeting ASTM D4985 (less than .10% silicate)		50/50 gives -34 F freeze point and 228 F boiling point; working range 40 to 60 percent antifreeze; use refractometer, not hydrometer; pre-charge 1.5 SCA units per gallon
Coolant	50/50 low-silicate antifreeze and quality water	ASTM D4985 (less than 0.10% silicate as Na2SiO5)		Must be pre-charged with supplemental coolant additives (DCA4) to 1.5 units per gallon; never below 1.2 or above 3 units per gallon. Do not use soluble oils.
Coolant	Смесь воды и антифриза 50/50; низкосиликатный антифриз	Добавка Cummins DCA4 или эквивалент		Вода чистая, без хлоридов, сульфатов и кислот, с pH от 8,5 до 10,5; при заполнении холодной системы остается 6 (максимум 8) % дополнительной емкости для расширения
Coolant	60 percent ethylene glycol / 40 percent water	Low-silicate antifreeze	-54°C to -32°C	Arctic specification coolant mixture for -32 to -54 C [-25 to -65 F]
Engine oil	SAE 15W-40	API CE or CF4		Cummins Premium Blue or equivalent; CD or CD/SF acceptable where CE/CF4 not available; sulfated ash must not exceed 1.85 mass percent
Engine oil	SAE 5W-30 synthetic CE/SF	API CE or CF4	below -23°C	For ambient temperatures consistently below -23 C [-10 F] with no provision to keep engine warm
Fuel	ASTM No. 2 diesel	No. 2 D; blends of No. 2 D and No. 1 D below 0 C [32 F]		Viscosity must be kept above 1.3 cSt; maximum cloud and pour points 6 C [10 F] lower than ambient
Fuel	Diesel	IS:1460		Fuel consumption data based on diesel having specific gravity of 0.85; fuel consumption tolerance is +5%
Fuel	Дизельное топливо класса А1 или А2	BS 2869: Часть 1:1998 (класс А1); BS 2869: Часть 2:1998 (классы А2, С1, С2, D, E, F, G, H)		Топливо должно быть как можно более чистым, по возможности не содержать воды и загрязнений
Grease	Water pump type grease (Amoco Rykon Premium No. 2 / Chevron SRI / Exxon Unirex N2 / Shell Dolium R / Texaco Premium RB)			Fan idler pivot arm and front engine support lubrication
Other	Природный газ	Наименьшая теплопроизводительность >30 МДж/Н·м3; плотность 0,7-0,9 кг/м3; метановое число >52; H2S >0,01 %; максимальная температура газа 50 °C	below 50°C	Требования к качеству газа для газовых двигателей; при несоответствии двигатель должен быть отключен

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

Procedures

Alternator Belt Adjustment adjustment

⚠ Over-tensioning of alternator belts can result in premature accessory drive bushing wear and seal leakage.

Tools: GT-1293 Burroughs Tension Gauge

Loosen the alternator and adjusting link mounting capscrews.
Loosen the jam nuts on the adjusting screw.
Turn the adjusting screw clockwise to tighten the belt tension.
Check the belt tension with a gauge.
Tighten the jam nuts on the adjusting screw to 55 Nm [40 ft-lb].
Tighten the adjusting link and alternator mounting capscrews to 55 Nm [40 ft-lb].
Check the belt tension again.

Crossheads - Adjustment adjustment

Tools: ST-669 Torque Wrench Adapter

Adjust the crossheads on the cylinder that has both valves closed.
Loosen the crosshead adjusting screw locknuts on the intake and exhaust valve crossheads.
Turn the adjusting screw out at least one turn.
Hold the crosshead down against its guide.
Turn the adjusting screw in until it touches the top of the valve stem but does not raise the crosshead.
Hold the adjusting screw and tighten the lock nut to the torque value.

Dipstick Calibration adjustment

⚠ The dipstick will break if the scribe mark is too deep.

Tools: scribe

Drain the oil from the pan.
Install the dipstick in the dipstick tube.
Use clean 15W-40 oil to fill the oil pan to the specified low level.
Remove the dipstick and scribe a mark across the dipstick at the oil level. Mark the low level with an L.
Install the dipstick and add additional oil to the specified full level.
Remove the dipstick and scribe a mark across the dipstick at the oil level. Mark the high oil level with an H.

PT (type D) Injector - Adjustment adjustment

⚠ The injector plunger is under spring tension. Do NOT allow the tool to slip.

Tools: 3822575 adjustment kit, 3822574 rocker lever actuator, ST-669 adapter

Install injector and valve adjustment kit, Part No. 3822575.
Adjust indicator tip to touch top of injector plunger.
Lower indicator 12.25 mm [0.5 inch] and lock support.
Depress rocker lever until injector bottoms two or three times.
Hold plunger bottomed and set indicator to ZERO.
Turn adjusting screw until indicator reads specified travel.
Tighten locknut; verify setting.

Valves - Adjustment adjustment

⚠ Use the correct chart for the engine being serviced or the parts will be damaged.

Tools: 3376592 Inch Pound Torque Wrench, ST-669 Torque Wrench Adapter, feeler gauge

Select a feeler gauge for the correct valve lash specification and insert the gauge between the rocker lever and the crosshead.
Torque wrench method: use Part No. 3376592 inch pound torque wrench and tighten the adjusting screw to 0.68 Nm [6 in-lb].
Feel method: use a screwdriver and turn the adjusting screw only until the lever touches the feeler gauge.
The adjusting screw must not turn when the locknut is tightened.
Tighten the locknut to the value indicated.
The feeler gauge must slide backward and forward with only a slight drag.
Attempt to insert a feeler gauge 0.03 mm [0.001 in] thicker; the lash is not correct when the thicker gauge will fit.
Repeat until clearance is correct on both intake and exhaust valves.

Valves and Injectors - General Checking and Adjustment adjustment

⚠ Use the correct chart for the engine or the parts will be damaged.

⚠ Crosshead adjustment must always be made before adjusting the valves.

Tools: 3376592 inch pound torque wrench, 3822575 injector and valve adjustment kit, 3822574 rocker lever actuator, ST-669 torque wrench adapter

Steam clean engine before removing rocker lever covers.
Remove rocker lever covers and related components.
Align valve set (VS) mark on damper or flywheel with pointer.
Determine cylinder in position; crossheads and valves ready when all valves closed.
Adjust crossheads before adjusting valves.
Adjust valves to lash specification with feeler gauge.
Adjust injectors per PT (type D) or STC/HVT method.
Tighten locknuts and reinstall rocker lever covers.

Установка и подключение аккумуляторной системы installation

⚠ При зарядке батарей выделяются взрывоопасные газы – обеспечьте вентиляцию, вдали от искр и открытого огня.

⚠ Перед подключением батарей переключатель Run/Off/Auto на панели управления должен находиться в положении Off (ВЫКЛ).

⚠ Не устанавливайте кислотные батареи в одном помещении с никель-кадмиевыми.

Tools: Торцевой гаечный ключ

Установите батареи в чистое, хорошо освещенное и вентилируемое место с легким доступом для обслуживания.
Подключайте землю ПОСЛЕДНЕЙ, а при извлечении батареи отключайте ее ПЕРВОЙ.
Вначале подключайте ПЛЮСОВОЙ кабель генератора, затем минусовой; соблюдайте полярность.
Тщательно затяните гайки межъячеечных соединений и смажьте контакты вазелиновым маслом.
Для 24 В соедините две или четыре 12-вольтовые батареи последовательно.

Air Cleaner Element Replacement - Single Heavy Duty Dry-Type maintenance

⚠ Holes, loose end seals, dented sealing surfaces and other damage require immediate element replacement.

⚠ Pull the cover and element straight out to avoid damage.

Wipe dirt from the cover and upper portion of the air cleaner before disassembly.
Loosen the wing bolt and band clamp securing the dust pan.
Loosen the wing nut and remove the dust shield from the dust pan. Clean the dust pan and shield.
Remove the wing nut securing the primary element and inspect the rubber sealing washer.
Remove the dirty cleaner element and install the new primary element.
Make sure the rubber sealing washer is in place under the wing nut before tightening.
Assemble the dust shield and dust pan and secure with the band clamp.

Coolant Filter Replacement maintenance

⚠ Do NOT remove the radiator cap from a hot engine.

⚠ Do not allow oil to get in the filter; it will adversely affect the DCA.

Remove the coolant system pressure cap and close the shutoff valve(s), if equipped, before removing the coolant filter.
Push in the knob on the filter head or close the gate valve.
Lubricate the seal on the new filter with engine oil.
Install the new coolant filter. Turn the filter until the seal touches the filter head.
Turn the filter an additional 1/2 to 3/4 of a turn after contact.
Pull the knob on the filter head out or open the gate valve.

Cooling System - Cleaning System and Changing Antifreeze maintenance

⚠ Do not use caustic cleaners; aluminum components will be damaged.

⚠ Wait until temperature is below 50 C [120 F] before removing the pressure cap.

Drain the cooling system; do not allow it to dry out.
Add Fleetguard RESTORE or RESTORE PLUS (1 U.S. gallon per 38-57 liters capacity).
Fill system with plain water.
Operate engine at normal temperature (at least 85 C [185 F]) for 1 to 1.5 hours.
Shut off and drain the system.
Fill with clean water and operate at high idle 5 minutes above 85 C.
Shut off and drain; repeat flush if water is still dirty.
Refill with new heavy duty coolant and SCA.

Cooling System Cleaning and Changing Antifreeze maintenance

⚠ Do not use caustic cleaners in the cooling system. Aluminum components will be damaged.

⚠ Wait until the temperature is below 50 C [120 F] before removing the coolant system pressure cap.

Drain the cooling system. Do not allow the cooling system to dry out. Do not remove the coolant filter.
Add 3.8 liters [1 U.S. gallon] of Fleetguard RESTORE (or equivalent) for each 38 to 57 liters [10 to 15 gallons] of cooling system capacity and fill with plain water.
Turn the heater temperature switch to high to allow maximum coolant flow.
Operate the engine at normal operating temperatures (at least 85 C [185 F]) for 1 to 1 1/2 hours.
Shut the engine off and drain the cooling system.
Fill with clean water to flush and operate at high idle for 5 minutes above 85 C [185 F].
Shut the engine off and drain. Repeat flushing if the water is still dirty.
Refill the system with new heavy duty coolant and SCA.

Fan Belt - Removal and Installation (Back Side Idler System) maintenance

⚠ The fan belt idler is under tension. Do NOT allow your hands between the idler and belt or fan hub.

Tools: 8-point socket, breaker bar

Remove the back side idler end of the shock absorber, control rod, or turnbuckle.
Loosen upper capscrew and remove lower capscrew.
Relieve idler spring tension with an 8-point socket and breaker bar.
Remove the fan belt.
Install the belt on crankshaft and fan hub pulley, aligning grooves with pulley ribs.
Rotate idler against spring and install lock washer and capscrew; torque 45 Nm.
Install control rod or shock absorber and tighten capscrews to 60-90 Nm.

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
110/190, 115/200	3	Code 31		Reconnectible stator
120/208	3	Code 4	4	60 Hz
120/208, 127/220	3	Code 519		Reconnectible stator
120/240	3	Code 5D	4	60 Hz
127/220	3	Code 8	4	60 Hz
139/240	3	Code $ (99 on nameplate)	4	No Standard Voltage Code, number 99 is marked on the nameplate for reference information
200/346	3	Code 523		Reconnectible stator
220/380	3	Code 7	4	60 Hz
220/380, 230/400	3	Code 520		Reconnectible stator
240/416	3	Code 7X	4	60 Hz
240/416, 254/440	3	Code 521		Reconnectible stator
240/416, 254/440	3	Code 522		Reconnectible stator
240/480	3	Code 6D	4	60 Hz
277/480	3	Code 4X	4	60 Hz
347/600	3	Code 9X	4	60 Hz

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 Cummins/Onan KTA38 family

Part #	Description	Category
UC224C	Alternator Model	Alternator
UC274F	Alternator Model	Alternator
052045	Lead Acid Battery - Dry (Export)	Battery
011261	Battery Lead (-VE)	Battery lead
011262	Battery Lead (+VE)	Battery lead
011270	Battery Lead, +ve	Battery lead
035095	Clamp Bolt	Bolt
427560	Battery Boot, Single Outlet	Boot
427561	Battery Boot, Copper Link	Boot
035090	Battery Clamp	Clamp
049001	Clip	Clip
010156	Heater Hose Connection	Connection
010159	1” NPT x 16 I/D Hose Connector	Connector
0300-4623-26	DFJD (600V)	Current transformer
0300-4623-51	DFJD BR (0-480V)	Current transformer
149-1689	Element (Dual Fuel/Water Separator)	Fuel filter
FF202	Fuel, Spin-On	Fuel filter
FS1216	Fuel/Water Sep Spin-On	Fuel filter
155-0675	Gasket (Water Outlet)	Gasket
155-1030	Gasket (Exhaust Header)	Gasket
415-0486	Gasket (Fuel Tank - Overhead/Underground Supply)	Gasket
526-0063	Gasket (Fuel Tank)	Gasket
M-4352580	Upper Gasket Set	Gasket
503-0359	Hose (1-5/8" I.D. x 3 ' )'	Hose
503-0788	Hose (Cooling System - Standpipe)	Hose
518-0548-24	Clamp, Hose	Hose
3822575	Injector and valve adjustment kit	Injector
011281	STR/STR - STR/Earth Lead (-VE)	Lead
011250	Battery Link	Link
050861	11/4’’ NPT x 1’’ NPT Hex Nipple	Nipple
715250	M8 Steel Wing Nuts	Nut
151-0399	Controller (Electric Governor)	Service part / kit
151-0419	Actuator (Electric Governor)	Service part / kit
159-0020	Cap, Tank	Service part / kit
307-0839	Valve, Solenoid	Service part / kit
307-1861	Valve, Solenoid (Overhead Supply)	Service part / kit
309-0243	Valve, Control - Temperature Regulating	Service part / kit
309-0407	Valve, Float (Overhead Supply)	Service part / kit
3096680	Piston STC 13.8:1 Ratio	Service part / kit
3096681	Piston KT Series 15.5:1 Ratio	Service part / kit
3096682	Piston KTA Series 14.5:1 Ratio	Service part / kit
3096683	Piston 13.5:1 Ratio	Service part / kit
3096684	Piston KTA 15.7:1 Ratio	Service part / kit
3096685	Piston STC 13.9:1 Ratio	Service part / kit
331-0027	Clamp, Junction Box - Spec A through G	Service part / kit
332-2634	Clamp, Hose	Service part / kit
3628731	Piston STC Kit	Service part / kit
3630913	Piston KTA-50-G7	Service part / kit
3631241	Piston Kit STC 13.9:1 Ratio	Service part / kit
3631242	Piston Kit 13.5:1 Ratio	Service part / kit
3631243	Piston Kit KTA 15.7:1 Ratio	Service part / kit
3631244	Piston Kit KTA Series 14.5:1 Ratio	Service part / kit
3631245	Piston Kit KT Series 15.5:1 Ratio	Service part / kit
3631246	Piston Kit STC 13.8:1 Ratio	Service part / kit
3803530	Piston Assembly STC	Service part / kit
3804747	Piston Kit KTA-50-G7	Service part / kit
3804885	Piston KTA-50-G8/G9	Service part / kit
4089847	Piston Kit GTA38/19	Service part / kit
4090013	Piston Kit KTA-38-M2	Service part / kit
4090029	Piston Kit QSK19CE	Service part / kit
4090181	Piston GTA38/19	Service part / kit
4097889	Piston KTA-38-M2	Service part / kit
4910463	Piston QSK19R/M	Service part / kit
4910465	Piston QSK Series	Service part / kit
4916177	Piston GTA/GQSK19	Service part / kit
4918058	Piston QSK19CE	Service part / kit
4922319	Piston QSK19C	Service part / kit
4955233	Piston Kit QSK19R/M	Service part / kit
4955235	Piston Kit QSK Series	Service part / kit
4955236	Piston Kit QSK19C	Service part / kit
4955238	Piston Kit GTA/GQSK19	Service part / kit
508-0018	Washer, Insulating (1/4" ID)	Service part / kit
518-0548-42	Clamp, Retainer 4 Prior To December 1996 Production (Mounted On Top And Side Of Control Box Wrapper)	Service part / kit
M-3804747	Piston Kit	Service part / kit
V2403-M-E3BG	Engine Model	Service part / kit
05050151	Reducer, 1/2” x 1/8” NPT	Reducer
706187	M4 x 12 mm Steel Cheesehead Screw	Screw
01930388	Sender, Oil Temperature	Sensor
150-0717	Switch Assembly, Overspeed	Sensor
151-0411	Pickup, Magnetic	Sensor
960-0504	PCC Control Service Manual	Service manual
960-0507	Detector Control Service Manual	Service manual
010167	Heater Support	Support
03090269	Switch, Low Engine Temperature (LET)	Switch
418520	Battery Terminal, On Line	Terminal
010112	Thermostat	Thermostat
035105	Battery Tray	Tray
716007	M4 Plain Washer, Thick, Steel, Form A	Washer

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 Cummins/Onan KTA38-G5?

The Cummins/Onan KTA38-G5 engine has an oil capacity of 145.0 liters.

What is the displacement of the Cummins/Onan KTA38-G5?

The Cummins/Onan KTA38-G5 has a displacement of 38.0 liters with 12 cylinders.

Which generators use the Cummins/Onan KTA38-G5 engine?

The Cummins/Onan KTA38-G5 powers 6 generator set(s), including Cummins/Onan 815DFJD, Cummins/Onan C1000 D5, Cummins/Onan C1010 D5 P, Cummins/Onan C1100 D5B, Cummins/Onan K38 Series.