CUMMINS 4089651 GENUINE UPPER ENGINE GASKET KIT (.020) FOR 1989–1998 5.9L CUMMINS

The Cummins 4089651 upper engine gasket kit (.020) is an OEM top-end gasket set designed for 1989–1998 Dodge Ram 5.9L Cummins 12-valve and early 24-valve engines. This kit includes all necessary upper engine gaskets and seals, with a .020 over head gasket specifically for rebuilt engines with cylinder head or block machining.

Using a genuine Cummins gasket kit ensures a perfect fit, leak-free sealing, and long-term durability compared to aftermarket alternatives.

Features & Benefits

• .020 Over Head Gasket: Designed for engines with resurfaced cylinder heads or decks.
• Complete Kit: Includes valve cover, intake, exhaust, injector, and head gaskets.
• OEM Quality: Built to withstand diesel heat, pressure, and vibration.

Fitment

• 1989–1993 Dodge Ram 5.9L Cummins 12V (VE Pump)
• 1994–1998 Dodge Ram 5.9L Cummins 12V (P7100 Pump)
• 1998 Dodge Ram 5.9L Cummins 24V (VP44, early models)

Cross Reference Part Numbers

• Cummins 4089651
• Aftermarket equivalents: M-4089651

Frequently Asked Questions

When do I need a .020 over head gasket?

If the cylinder head or block deck has been resurfaced, material removal requires a thicker gasket (.020) to maintain proper compression and piston-to-valve clearance.

Does this kit include lower engine gaskets?

No. This is an upper engine gasket kit. For a full rebuild, you’ll also need a lower engine gasket set.

Does this fit 1998.5–2002 Cummins?

No. This kit is for 1989–1998 engines only. Later 24V engines require a different gasket set.

Maintenance Note

Pro Tip: Always replace head bolts or upgrade to studs when installing a new head gasket to ensure proper torque and long-term sealing.

Tags

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