Product Description
Interstate-McBee M-4089649 Upper Engine Gasket Set – 89–98 5.9L Cummins
OEM-style upper engine gasket set from Interstate-McBee, designed for 1989–1998 Dodge Ram 5.9L Cummins 12-valve engines. Complete upper-end sealing solution—precision-cut, durable, and cost-effective for valve cover, rocker, and cylinder head seals.
- Comprehensive upper rebuild kit: Includes all upper gaskets and seals for valve cover, rocker box, and head.
- OEM-fit precision: Matches Cummins 4089649 original specifications for fit and function.
- Built to last: Quality materials and tight tolerances, ensuring reliable sealing under high heat and pressure.
- Strong aftermarket value: High-quality replacement at substantial savings compared to genuine Cummins parts.
Specifications
| Part Number | M-4089649 (Interstate-McBee) |
|---|---|
| OEM Reference | 4089649 (Cummins) |
| Replaces | M-Non-original or earlier Interstate-McBee upper kits |
| Engine Fitment | 5.9L Cummins 12-valve B-Series |
| Applicable Years | 1989–1998 |
| Included Components | Valve cover gasket(s), rocker box seal(s), head gasket(s) |
Vehicle Fitment
Always verify compatibility using engine serial number (ESN) when available.
- Dodge Ram 2500/3500 5.9L Cummins (12-Valve B-Series):
- Production Years: 1989 through 1998
- Industrial Platforms: B-Series non-high-pressure (e.g., 4BT) in some applications—confirm via ESN.
Installation Tips
- Clean mating surfaces thoroughly to ensure proper sealing—remove old gasket material fully.
- Use new torque-to-yield hardware where required and follow Cummins service manual torque sequences.
- Apply manufacturer-specified sealant only if directed in the service manual.
Warranty
Interstate-McBee engine rebuild parts include manufacturer warranty—typically 1 to 2 years. Please consult documentation or reach out for specifics.
Cross-Reference
Equivalent to Cummins 4089649. Ideal for upper-end engine rebuilds on 1989–1998 B-Series 12-valve 5.9L Cummins.
Why Buy From CPP Diesel
- Specialized diesel parts inventory with ESN-based fitment advice.
- Rapid shipping and hassle-free returns.
- Technical support from diesel experts to ensure proper fitment.
FAQ
Is this set only for 12-valve (non-ISB) 5.9L engines?Yes—this Interstate-McBee upper gasket set is tailored for 12-valve B-Series 5.9L Cummins engines produced between 1989 and 1998.
Does this replace other Interstate-McBee upper kits?
It is designed to meet OEM specs similar to Cummins 4089649; if you have an earlier or generic Interstate-McBee kit, compare contents carefully before assuming compatibility.
What’s included in the kit?
Valve cover gaskets, rocker box seals, head gaskets—everything needed for upper-end sealing in an engine rebuild.
Is sealant required?
Follow the Cummins service manual—use sealant only where the manual specifically indicates (e.g., front cover mating surfaces).
Product Videos
Custom Field
YEAR 1989-1998
MAKE DODGE
ENGINE 5.9L
