Description
Wix 51791 spin-on full-flow lube oil filter — direct replacement for Caterpillar 1R0739, Fleetguard LF667, and Mack 485GB3191 / 20539275 — for Cat 3126, C7, 3306 and Mack E7, MP7, MP8 heavy-duty diesel engines. Enhanced cellulose media, 20-micron nominal, 18–20 GPM rated flow, 330 psi burst pressure. 1-1/8-16 thread.
Specifications
| Manufacturer | Wix |
|---|---|
| Part Number | 51791 |
| Part Type | Spin-On Lube Filter (Full Flow) |
| Engine Compatibility | Cat 3126, C7, 3306; Mack E7, MP7, MP8 |
| Media | Enhanced Cellulose |
| Nominal Micron Rating | 20 |
| Beta Ratio | 2/20 = 11/25 |
| Max Flow Rate | 18–20 GPM |
| Burst Pressure | 330 psi |
| Bypass Valve | None |
| Overall Height | 10.37 in (263 mm) |
| Outer Diameter | 4.28 in (109 mm) |
| Thread Size | 1-1/8-16 |
Cross References
This part replaces or is equivalent to the following part numbers:
- Caterpillar: 1R0739, 1R0658, 1R0058, 1W3300, 2P4004, 2Y8096, 3Y0900
- Fleetguard: LF667
- Mack: 485GB3191, 485GB3191A, 485GB3191B, 485GB4348, 20539275
- Volvo: 3134053, 6884417
- Baldwin: B76, B7600
- Donaldson: P553771
- Luber-Finer: LFP3191
- Hastings: LF514
- NAPA Gold: 1791
- Motorcraft: FL307, FL307FP
- Kenworth: KW667
- PAI: FOF4570
- Alliance: ABPN10GLF667
Applications
This oil filter fits the following heavy-duty diesel engines:
- Caterpillar 3126, 3126B, 3126E (1995–2003)
- Caterpillar C7 (2003–2009)
- Caterpillar 3306 (mechanical and electronic)
- Mack E7, E-Tech (1992–2007)
- Mack MP7, MP8 (2007–later, lube circuit)
Representative vehicles using these engines:
- Mack CH, CL, CV (Granite), CXN (Vision), Pinnacle, Anthem
- Freightliner FL-Series, M2, FS-65 with Cat 3126/C7
- Ford F-650, F-750 with Cat 3126 / C7
- Sterling Acterra with Cat C7
- Kenworth T270, T300, T370 with Cat 3126 / C7
- Peterbilt 325, 330, 335, 337, 340 with Cat 3126 / C7
- Caterpillar wheel loaders, motor graders, off-highway with 3306 / C7
Verify your engine serial number and oil filter base before ordering to confirm fitment. Some MP7/MP8 builds use a different lube filter — confirm with the OEM number on your current filter.
