Product Description
Interstate-McBee M-4089263 Upper Engine Gasket Set – 03–07 5.9L Cummins (Rear Gear)
Premium upper engine gasket set engineered by Interstate-McBee for 2003–2007 Dodge Ram 2500/3500 with 5.9L Cummins ISB (rear gear). Built to OEM-equivalent dimensions for a precise seal on HPCR/EGR applications, this aftermarket kit delivers reliable top-end sealing performance at an exceptional value.
- Rear-gear specific: Correct gasket profiles for 2003–2007 ISB 5.9L rear gear train engines.
- OEM-style fit: Matches Cummins reference 4089263 for form, fit, and function.
- Complete top-end reseal: Includes critical upper gaskets, seals, and washers for a thorough service.
- Aftermarket value: Interstate-McBee quality at a lower cost than OEM boxed kits.
Specifications
| Manufacturer | Interstate-McBee |
|---|---|
| Part Number | M-4089263 |
| OEM Cross-Reference | Cummins 4089263 (ISB 5.9L, HPCR with RGT/EGR) |
| Application | 5.9L Cummins ISB (Rear Gear) – HPCR/EGR |
| Kit Type | Upper / Top-End Gasket Set |
What’s Included (typical contents)
- Cylinder head gasket (thickness per ESN/application)
- Rocker/valve cover & rocker housing gaskets
- Intake manifold/plenum & turbo/exhaust manifold gaskets
- Injector sealing washers & O-rings, thermostat & various service seals
- Accessory drive/connection gaskets and related upper-end seals
Exact contents may vary by engine serial number (ESN). Contact us to verify head gasket thickness and kit contents for your ESN.
Vehicle Fitment
Always verify by engine serial number (ESN).
- Dodge Ram 2500/3500 — 2003, 2004, 2004.5, 2005, 2006, 2007
- 5.9L Cummins ISB, rear gear train, HPCR/EGR
Installation Notes
- Clean all mating surfaces thoroughly; chase threads and inspect fasteners.
- Confirm head gasket thickness per ESN; follow the Cummins service manual for torque sequences/specs.
- Use sealants only where OEM specifies; recheck coolant and oil levels after initial heat cycles.
Warranty
Interstate-McBee new parts carry manufacturer warranty coverage. For specific terms on gasket sets and workmanship, contact us with your ESN and purchase date.
Cross-Reference & Compatibility
Interchange: Cummins 4089263 (upper engine gasket set). Intended for rear gear ISB 5.9L with HPCR/EGR. For other 5.9L years or front-gear applications, see our related upper sets.
Why Buy From CPP Diesel
- ESN-verified fitment support from real diesel techs
- Fast shipping & hassle-free returns
- Deep Cummins B-Series catalog for one-stop top-end and bottom-end service
