Cummins ISX QSX SOHC Upper Head Gasket Set | 4376104 | FP Diesel

New FP Diesel (Federal-Mogul) upper engine gasket set for Cummins ISX / QSX single-overhead-cam (SOHC) engines — replaces Cummins 4376104. This is a complete upper set that includes the head gasket along with the intake and exhaust manifold gaskets, thermostat seals, injector O-rings, and the seals needed for a cylinder head R&R. Manufactured to meet or exceed OEM specifications.

Key Features:

• FP Diesel (Federal-Mogul) upper engine gasket set for Cummins ISX / QSX SOHC engines
• Includes the head gasket — a complete upper set, not a head-gasket-less kit
• Includes intake and exhaust manifold gaskets, thermostat seals, injector O-rings, and related seals
• SOHC-specific — for single-overhead-cam ISX/QSX engines (not the dual-cam DOHC ISX)
• Direct replacement for Cummins 4376104 (supersedes 2881767); manufactured to meet or exceed OEM specs

Specifications:

• Base part number: 4376104 (FP Diesel FP-4376104)
• Component type: Upper engine gasket set (includes head gasket)
• Condition: New
• Brand: FP Diesel (Federal-Mogul)
• Engine application: Cummins ISX / QSX, single overhead cam (SOHC)
• Head gasket: included
• Also includes: intake & exhaust manifold gaskets, thermostat seals, injector O-rings, related seals

Compatibility / Fitment:

• Cummins ISX / QSX single-overhead-cam (SOHC) engines
• Camshaft gate (important): this is the SOHC set — it does not apply to dual-overhead-cam (DOHC) ISX/Signature engines, which use different gaskets. Confirm your engine has a single camshaft before ordering
• Confirm your engine serial number / CPL and emissions configuration before ordering, as ISX/QSX gasket sets vary by build
• Verify against the gasket set / head configuration being replaced

Popular Cross-References / Interchanges:

• Cummins OE: 4376104, 2881767, 4352146
• More interchanges available in our Interchange Part Numbers tab

Conclusion:

The FP-4376104 is a new FP Diesel upper engine gasket set for Cummins ISX / QSX single-overhead-cam engines, replacing Cummins 4376104. It includes the head gasket plus the manifold gaskets, thermostat seals, and injector O-rings for a complete cylinder head job — manufactured to OEM specifications for reliable sealing.