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Cummins ISM M11 Head Gasket Set | FP-4089478 | EPA98
Cummins ISM M11 Head Gasket Set | FP-4089478 | EPA98
SKU: FPDFP-4089478
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Estimated Delivery: September 10 to September 15
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New FP Diesel (Federal-Mogul) upper head gasket set for Cummins 11-liter ISM/QSM engines (EPA98 emissions era) — replaces Cummins 4089478. Also covers the related late L10 (L10E) and M11 builds. This is a complete upper set that includes the head gasket along with the rocker lever housing gasket, exhaust manifold gaskets, and the injector seals and O-rings needed for a cylinder head R&R. Manufactured to meet or exceed OEM specifications.
Key Features:
- FP Diesel (Federal-Mogul) upper head gasket set for Cummins 11L ISM / QSM engines (EPA98)
- Also fits related late L10 (L10E) and M11 builds
- Includes the cylinder head gasket — a complete upper set for a top-end / cylinder-head job
- Includes rocker lever housing gasket, exhaust manifold gaskets, injector seals, and O-ring seals
- Direct replacement for Cummins 4089478 (supersedes 4025157 / 4024993 / 3803293 / 3806179)
Specifications:
- Base part number: 4089478 (FP Diesel FP-4089478)
- Component type: Upper head gasket set (includes head gasket)
- Condition: New
- Brand: FP Diesel (Federal-Mogul)
- Engine application: Cummins 11L ISM / QSM (also late L10 / M11)
- Emissions era: EPA98
- Head gasket: included (Cummins 2864080)
- Also includes: rocker lever housing gasket, exhaust manifold gaskets, injector seals, O-ring seals
Compatibility / Fitment:
- Cummins 11-liter ISM and QSM engines, EPA98 emissions era (primary application per Cummins)
- Also covers the related late L10 (L10E) and M11 builds in the same 11L lineage
- Emissions/build note: this set is for the EPA98 11L ISM/QSM (and late L10/M11). Confirm your engine's emissions era and serial/CPL before ordering, as 11L gasket sets vary by build
- Verify against the gasket set / head configuration being replaced
Popular Cross-References / Interchanges:
- Cummins OE: 4089478, 4025157, 4024993, 3803293, 3806179
- Mahle: HS54146-2
- PAI: 131482
- More interchanges available in our Interchange Part Numbers tab
Conclusion:
The FP-4089478 is a new FP Diesel upper head gasket set for Cummins 11-liter ISM/QSM engines (EPA98), also covering related late L10 and M11 builds. It includes the head gasket plus the rocker housing, manifold, and injector seals for a complete cylinder head job — manufactured to OEM specifications for reliable sealing.
