INTERSTATE MCBEE
INTERSTATE-MCBEE M-4089651 UPPER ENGINE GASKET SET .020 OVERSIZE 89-98 5.9L CUMMINS (AFTERMARKET REPLACEMENT)
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- SKU:
- MCBM-4089651
- MPN:
- M-4089651
- Shipping:
- Calculated at Checkout
Description
Interstate-McBee M-4089651 Upper Engine Gasket Set .020 Oversize – 89-98 5.9L Cummins
The Interstate-McBee M-4089651 Upper Engine Gasket Set is a .020” oversize aftermarket kit designed specifically for 1989–1998 Dodge Ram 2500/3500 5.9L Cummins 12-Valve engines. Perfect for rebuilds requiring slightly thicker gaskets to compensate for machining or wear. Built to OEM specifications for reliability and long service life.
- .020 Oversize fitment: Ideal for engines that have been decked, resurfaced, or require thicker sealing components.
- Complete upper set: Includes head gasket and all critical upper-end seals.
- OEM-equivalent quality: Manufactured to Cummins standards with aftermarket value pricing.
- Trusted brand: Interstate-McBee is a proven name in heavy-duty diesel engine components.
Specifications
| Part Number | M-4089651 (Interstate-McBee) |
|---|---|
| OEM Reference | 4089651 (Cummins) |
| Engine Fitment | 5.9L Cummins 12-Valve |
| Years | 1989–1998 |
| Oversize | .020 inch thicker than standard |
| Included | Head gasket, valve cover gaskets, intake/exhaust manifold gaskets, and related upper seals |
Vehicle Fitment
Always confirm with engine serial number (ESN) for best results.
- Dodge Ram 2500/3500 5.9L Cummins 12-Valve
- 1989–1993 VE-pump 12V Cummins
- 1994–1998 P-pump 12V Cummins
Installation Tips
- Clean all surfaces thoroughly—remove carbon and old gasket material completely.
- Follow torque sequence and values in the Cummins service manual for the head bolts.
- .020 oversize gaskets are used only when block or head machining requires additional thickness.
Warranty
Interstate-McBee engine kits carry manufacturer’s warranty coverage (typically 1–2 years depending on category). Contact us for full details.
Cross-Reference
OEM Cummins reference: 4089651. Replaces standard 12V upper gasket sets when oversize thickness is required.
Why Buy From CPP Diesel
- Dedicated Cummins specialists with verified ESN fitment support.
- Fast shipping and easy returns.
- Competitive pricing on Interstate-McBee and OEM Cummins engine parts.
FAQ
What does .020 oversize mean?It refers to gasket thickness. A .020” oversize head gasket is slightly thicker than standard, used when block or head surfaces have been machined.
Will this fit a 24-valve Cummins?
No—this gasket set is for 1989–1998 5.9L 12-valve Cummins engines only. 24-valve engines use a different kit.
What’s included in this set?
Head gasket (.020 oversize), intake/exhaust manifold gaskets, valve cover gaskets, and all upper engine sealing components.
When should I use an oversize gasket?
When the block or cylinder head has been machined, reducing overall clearance, an oversize gasket restores proper compression and sealing.
Is Interstate-McBee as good as OEM?
Yes—Interstate-McBee manufactures to OEM-equivalent specifications, offering excellent quality at a lower cost compared to genuine Cummins parts.
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