Product Description
The CUMMINS 4089651 OEM UPPER ENGINE GASKET KIT (.020 THICKER HEAD GASKET) is designed for 1989–1998 5.9L 12-valve Cummins diesel engines. This genuine Cummins gasket kit provides the seals and gaskets required for upper engine service while featuring a .020-inch thicker cylinder head gasket for specific repair and rebuild applications.
Use this kit during cylinder head replacement, valve train service, engine repair, or complete top-end rebuilds. Always verify application requirements and piston protrusion specifications before selecting a thicker head gasket.
FEATURES
- Genuine Cummins OEM upper engine gasket kit
- Includes .020-inch thicker head gasket
- Designed for 1989–1998 5.9L 12-valve Cummins engines
- Provides OEM-quality sealing and fitment
- Ideal for cylinder head repairs and engine rebuilds
- Helps restore proper engine sealing and reliability
FITMENT
- 1989–1993 Dodge Ram 2500/3500 5.9L Cummins 12-Valve
- 1994–1998 Dodge Ram 2500/3500 5.9L Cummins 12-Valve
- Select industrial and commercial 5.9L 12-valve Cummins applications
WHAT'S INCLUDED
- 1 Cummins 4089651 OEM Upper Engine Gasket Kit
- .020-inch thicker cylinder head gasket
- Upper engine gaskets and seals supplied by Cummins for applicable service procedures
CROSS-REFERENCE AND RELATED PRODUCTS
- Cummins 4089651
- Cummins Lower Engine Gasket Sets
- Cummins Cylinder Head Components
- Cummins Head Bolt and Fastener Components
SPECIFICATIONS
- Manufacturer: Cummins
- Part Number: 4089651
- Part Type: Upper Engine Gasket Kit
- Head Gasket Thickness: .020 Inch Thicker
- Engine Compatibility: 5.9L Cummins 12-Valve
- Fitment Years: 1989–1998
- Vehicle Application: Dodge Ram 2500 / 3500
- Condition: New OEM Cummins
- Installation Type: Direct Replacement
FAQ
Will this gasket kit fit my truck?
This kit fits many 1989–1998 Dodge Ram trucks equipped with the 5.9L 12-valve Cummins engine. Always verify engine specifications and application requirements before ordering.
What does the .020 thicker head gasket mean?
This kit includes a cylinder head gasket that is .020 inch thicker than the standard specification. It is commonly used in applications requiring additional piston-to-head clearance.
Is this a genuine Cummins gasket kit?
Yes. Cummins 4089651 is a genuine OEM Cummins upper engine gasket kit.
What repairs is this kit commonly used for?
This kit is commonly used for cylinder head replacement, valve train repairs, top-end service, and engine rebuild projects.
Does this kit include all upper engine gaskets?
The kit includes the upper engine sealing components supplied by Cummins for applicable service procedures. Verify contents before beginning repairs.
Do I need any related parts?
Inspect the cylinder head, head bolts or studs, pushrods, rocker components, intake and exhaust manifold gaskets, and cooling system components during installation and replace worn parts as necessary.
