Isuzu 4LE2T Engine
The Isuzu 4LE2T is a 1.33 L 4-cylinder turbocharged engine rated at 1800 rpm, producing up to 33 kW. It powers generator sets from Echo, Generac, Hipower and Isuzu, including the DGK20FS, DGK25F, MDG25IF4 and HRIW-25 T4F. It holds 2.25 L (0.6 gal) of oil and 10.4 L (2.7 gal) of coolant.
Also known as: ISUZU 4LE2T
Part of the Isuzu 4LE2T engine family — 2 variants share parts & fitment.
Service parts for the 4LE2T
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.
Engine specifications
| Oil capacity | 2.25 L |
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| Coolant capacity | 10.4 L |
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| Displacement | 1.33 L |
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| Cylinders | 4 |
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| Aspiration | Turbocharged |
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| Rated speed | 1800 rpm |
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| Gross power | 33 kW |
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Generator sets powered by this engine
5Shared across brands: Echo, Generac, Hipower, Isuzu
Common problems
7- Sparking occurs
Fix: Shut the engine down - Protective covers are loose or missing
Fix: Shut the engine down - Noticeable change in engine speed
Fix: Shut the engine down - Loss of electrical output
Fix: Shut the engine down - Equipment connected to the unit overheats
Fix: Shut the engine down - Engine misfires or there is excessive engine/gen-erator vibration
Fix: Shut the engine down - Ambient air temperature is above 113 °F (45 °C)
Fix: Shut the engine down
Compiled from service & troubleshooting documentation across every generator set that uses the Isuzu 4LE2T.
Maintenance schedule
Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.
Aftermarket parts that fit this engine
6Parts 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: Isuzu 8972319000 Isuzu 5864014350 Isuzu 8972599390 Donaldson P827653 Donaldson P821575 Donaldson P822858 Wix 46671 Wix 46438NP
- Fuel filter: Isuzu 8944015310 Isuzu H132401 Donaldson P502166 Donaldson P550057 Wix 33263 Wix 33386 Ac Delco TP1231
- Oil filter: Isuzu 5876100080 Donaldson P550162 Wix 51334 Ac Delco X45
Cross-referenced via Donaldson + OEM/engine-maker interchange — options to verify against your serial number, not confirmed for every exact variant.
Also used in
3- Hitachi ZX40U — Excavator Compact
- Hitachi ZX50U — Excavator Compact
- Kobelco SK80 — Excavator Tracked
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 Isuzu 4LE2T?
The Isuzu 4LE2T engine has an oil capacity of 2.25 liters.
What is the displacement of the Isuzu 4LE2T?
The Isuzu 4LE2T has a displacement of 1.33 liters with 4 cylinders.
Which generators use the Isuzu 4LE2T engine?
The Isuzu 4LE2T powers 5 generator set(s), including Echo DGK20FS, Echo DGK25F, Generac MDG25IF4, Hipower HRIW-25 T4F, Isuzu HPPI-20.
What oil filter does the Isuzu 4LE2T use?
The Isuzu 4LE2T uses oil filter part numbers Isuzu 5876100080, Donaldson P550162, Wix 51334.
What fuel filter does the Isuzu 4LE2T use?
The Isuzu 4LE2T uses fuel filter part numbers Isuzu 8944015310, Isuzu H132401, Donaldson P502166.
What air filter does the Isuzu 4LE2T use?
The Isuzu 4LE2T uses air filter part numbers Isuzu 8972319000, Isuzu 5864014350, Isuzu 8972599390.
How often should you change the oil in the Isuzu 4LE2T?
The Isuzu 4LE2T oil change interval is every 600 hours.
What is a common problem with the Isuzu 4LE2T engine?
A commonly reported issue on generators using the Isuzu 4LE2T is: Sparking occurs. Fix: Shut the engine down.