The Isuzu 4JH1 is a 2.3 L 4-cylinder turbocharged engine rated at 3600 rpm, producing up to 18.5 kW. It powers generator sets from MQ Power, including the DCA-25SSI. It holds 0.7 L (0.2 gal) of oil and 4 L (1.1 gal) of coolant.
Also known as: ISUZU 4JH1
Part of the Isuzu 4JH1 engine family — 2 variants share parts & fitment.
The cheapest captured merchant offer per filter — see the full cross-reference below for every OEM/aftermarket option.
Prices captured from merchant listings; some links are affiliate links. Verify against your serial number before ordering.
| Oil capacity | 0.7 L |
|---|---|
| Coolant capacity | 4.0 L |
| Displacement | 2.3 L |
| Cylinders | 4 |
| Aspiration | Turbocharged |
| Rated speed | 3600 rpm |
| Gross power | 18 kW |
| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | M1870300804 | 250 hr | Amazon eBay | ||
| Fuel filter | M1870300805 | 500 hr | Amazon eBay PartsGeek $33.97 | ||
| Oil filter | M1870300803 | 500 hr | Amazon eBay | ||
| Battery | — | ||||
| Belt | — | ||||
| Coolant | — | ||||
| Oil | SAE 15W-40 | 0.7 L | M1870300802 | 500 hr | Amazon eBay |
| Spark plug | — |
Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.
| Item | Action | Hours | Months | Notes |
|---|---|---|---|---|
| Air cleaner element | Clean | 50 hr | Remove and clean heavy duty paper element with kerosene, or foam element with liquid detergent and hot water |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
Parts listed by aftermarket suppliers as fitting this engine — leads compiled from supplier catalogs; verify the exact part for your serial number.
Cross-referenced via Donaldson + OEM/engine-maker interchange — options to verify against your serial number, not confirmed for every exact variant.
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.
The Isuzu 4JH1 engine has an oil capacity of 0.7 liters.
The Isuzu 4JH1 has a displacement of 2.3 liters with 4 cylinders.
The Isuzu 4JH1 powers 1 generator set(s), including MQ Power DCA-25SSI.
The Isuzu 4JH1 uses oil filter part numbers Isuzu 8970215760, Donaldson P502058.
The Isuzu 4JH1 uses fuel filter part numbers Isuzu 8943892990, Donaldson P550390, Wix 33128.
The Isuzu 4JH1 oil change interval is every 500 hours.