The Isuzu 4JJ1T is a 3 L 4-cylinder turbo engine rated at 1800 rpm, producing up to 42.5 kW. It powers generator sets from Energy Pac, Isuzu and MMD Equipment, including the ML40IMRD, 4JJ1T ML40IMRD, 4JJ1TABW and 4JJ1TYBW. It holds 6 L (1.6 gal) of oil and 6 L (1.6 gal) of coolant.
Also known as: Isuzu 4JJ1T
Part of the Isuzu 4JJ1T 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 | 6.0 L |
|---|---|
| Coolant capacity | 6.0 L |
| Displacement | 3.0 L |
| Cylinders | 4 |
| Aspiration | turbo |
| Rated speed | 1800 rpm |
| Gross power | 42 kW |
Shared across brands: Energy Pac, Isuzu, MMD Equipment
| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | Replaceable Element | 58741160706 | Amazon eBay $30.00 PartsGeek $43.97 KuduParts $67.00 | ||
| Fuel filter | 8943892990 | 500 hr | Amazon eBay $36.50 PartsGeek $33.97 | ||
| Oil filter | — | 500 hr |
Pooled from every document that names this exact engine — confirm the interval and part number against your unit's 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 4JJ1T engine has an oil capacity of 6.0 liters.
The Isuzu 4JJ1T has a displacement of 3.0 liters with 4 cylinders.
The Isuzu 4JJ1T powers 5 generator set(s), including Energy Pac ML40IMRD, Isuzu 4JJ1T ML40IMRD, Isuzu 4JJ1TABW, Isuzu 4JJ1TYBW, MMD Equipment Airman PowerPro 45.
The Isuzu 4JJ1T uses fuel filter part numbers Isuzu 8943892990, Donaldson P550390, Wix 33128.
The Isuzu 4JJ1T uses air filter part numbers Isuzu 58741160706, Donaldson P543614, Wix 46932.