The Ford LRG-425 is a 2.51 L 4-cylinder natural aspiration engine rated at 1800 rpm, producing up to 22.2 kW. It powers generator sets from FG Wilson, including the FG17P1S, FG20E1S, FG22P1 and FG25E1. It holds 3.8 L (1.0 gal) of oil and 3.8 L (1.0 gal) of coolant.
Also known as: Ford LRG-425
Part of the Ford LRG-425 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 | 3.8 L |
|---|---|
| Coolant capacity | 3.8 L |
| Displacement | 2.51 L |
| Cylinders | 4 |
| Aspiration | Natural Aspiration |
| Rated speed | 1800 rpm |
| Gross power | 22 kW |
| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | 9131141 | Amazon eBay $27.07 KuduParts $37.00 | |||
| Fuel filter | — | ||||
| Oil filter | — | ||||
| Battery | — | ||||
| Belt | — | ||||
| Coolant | — | ||||
| Oil | — | ||||
| Spark plug | — |
Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.
| Part # | Description | Category |
|---|---|---|
| 27916 | Air filters - Genie part numbers | air_filter |
| 52581 | Oil filter | oil_filter |
| 1-800-ROTUNDA | calling: | other_service |
| 102521 | S-40 and S-45 Service Manual (before serial number 3804) | other_service |
| 52856 | Genie Z-60/34 | other_service |
| 49612 | O-ring field service kit | seal |
Parts cataloged across all variants of this engine family — verify the exact part fits your specific variant and serial number before ordering.
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 Ford LRG-425 engine has an oil capacity of 3.8 liters.
The Ford LRG-425 has a displacement of 2.51 liters with 4 cylinders.
The Ford LRG-425 powers 4 generator set(s), including FG Wilson FG17P1S, FG Wilson FG20E1S, FG Wilson FG22P1, FG Wilson FG25E1.
The Ford LRG-425 uses oil filter part numbers Ford 9576P550008, Ford VSG413, Donaldson P550008.
The Ford LRG-425 uses air filter part numbers Ford 9131141, Donaldson P181052, Donaldson P822768.