Description
The Fleetguard LF3945 is a spin-on full-flow lube oil filter for older General Motors, Mack, Isuzu, and AMC/Chrysler light- and medium-duty diesel applications. It replaces Baldwin B1432, Donaldson P550505, Wix 51522, Fram PH59, and Mack 5839LF3945, with a 13/16-16 UNS-2B mounting thread and integral anti-drainback valve. An upgrade replacement is available with Fleetguard LF16104.
Specifications
| Manufacturer | Fleetguard |
|---|---|
| Part Number | LF3945 |
| Part Type | Spin-on Full-Flow Lube Oil Filter |
| Engine Compatibility | Older GM / Mack / Isuzu / AMC / Chrysler diesel |
| Thread Size | 13/16-16 UNS-2B |
| Outside Diameter | 3.02 in |
| Length | 4.12 in |
| Gasket OD | 2.83 in |
| Gasket ID | 2.46 in |
| Efficiency | 83% |
| Anti-Drain-Back Valve | Yes |
| Standpipe | No |
Cross References
This filter replaces or is equivalent to the following part numbers:
- Baldwin: B1432
- Donaldson: P550505
- Wix: 51522
- Fram: PH59
- Luber-Finer: PH59
- ACDelco: PF61E, PL25288
- GM (GMC): 25014377, 19210285
- Mack: 5839LF3945, 3076PH3675
- Isuzu: 8-25014-377-0, 8890173420
- Chrysler: J3242397
- AMC: 3242397
- Also known as: 729565 (Saab), 5655 (Allomatic)
Applications
This oil filter fits the following engines:
- Older GM light- and medium-duty diesel engines using 13/16-16 thread
- Isuzu industrial / light-truck diesel engines
- Mack-rebadged 3076PH3675 / 5839LF3945 lube applications
- AMC / Chrysler late-1970s/early-1980s gas and diesel applications
Representative vehicles using these engines:
- GM C/K series light- and medium-duty diesel pickups (older)
- Isuzu light-truck / industrial commercial vehicles
- AMC Jeep / Chrysler small-block applications using PH59 lube spec
Verify your engine serial number and configuration before ordering to confirm fitment.
