CUMMINS 4089649 OEM UPPER ENGINE GASKET SET – 5.9L 12-VALVE (1989–1998)

Product Description

The CUMMINS 4089649 OEM UPPER ENGINE GASKET SET is designed for 1989–1998 5.9L 12-Valve Cummins diesel engines. This genuine Cummins gasket set includes the upper engine sealing components commonly required during cylinder head service, top-end repairs, and engine rebuild projects while maintaining OEM fitment and reliability.

Use this gasket set when replacing the cylinder head, repairing valve train components, servicing the intake or exhaust system, or performing a complete upper engine rebuild. Always verify fitment by engine serial number before ordering.

FEATURES

• Genuine Cummins OEM upper engine gasket set
• Designed for 1989–1998 5.9L 12-Valve Cummins applications
• Helps restore proper engine sealing and reliability
• Ideal for cylinder head service and engine rebuild work
• OEM-quality materials and fitment
• Recommended for maintenance, repair, or overhaul projects

FITMENT

• 1989–1993 Dodge Ram D/W 250 and 350 5.9L Cummins 12-Valve
• 1994–1998 Dodge Ram 2500/3500 5.9L Cummins 12-Valve
• Select Cummins 5.9L 6BT industrial and commercial applications

WHAT'S INCLUDED

• 1 Cummins 4089649 OEM Upper Engine Gasket Set
• Upper engine gaskets and seals supplied by Cummins for applicable service procedures

CROSS-REFERENCE AND RELATED PRODUCTS

• Cummins 4089649
• Cummins Cylinder Head Components
• Cummins Head Bolt and Fastener Kits
• Cummins Valve Train Service Components
• Cummins Intake and Exhaust Manifold Gaskets

SPECIFICATIONS

• Manufacturer: Cummins
• Part Number: 4089649
• Part Type: Upper Engine Gasket Set
• Engine Compatibility: 5.9L Cummins 12-Valve (6BT)
• Fitment Years: 1989–1998
• Vehicle Application: Dodge Ram 250/350, 2500, 3500
• Condition: New OEM Cummins
• Engine Service Area: Upper Engine
• Installation Type: Direct Replacement

FAQ

Will this gasket set fit my truck?

This gasket set fits many 1989–1998 5.9L 12-Valve Cummins applications. Always verify fitment by engine serial number before ordering.

Is this a genuine Cummins gasket set?

Yes. Cummins 4089649 is a genuine OEM Cummins upper engine gasket set designed to meet factory specifications.

What is included in this gasket set?

This set includes upper engine gaskets and seals commonly required during cylinder head and upper engine service procedures. Contents may vary depending on application updates from Cummins.

When should an upper engine gasket set be replaced?

Replacement is recommended during cylinder head removal, engine rebuilds, top-end repairs, or whenever sealing surfaces and gaskets have been disturbed during service.

Does this include a head gasket?

Always verify kit contents before ordering. Cummins may update gasket set contents based on application and production revisions.

Do I need any related parts?

Inspect head bolts, pushrods, rocker components, intake and exhaust manifold hardware, seals, and related engine components during installation and replace worn parts as necessary.