Product Description
Cummins 4089650 OEM Upper Engine Gasket Kit (.010 Oversize) – 5.9L 12-Valve (1989-1998)
The Cummins 4089650 OEM Upper Engine Gasket Kit (.010 Oversize) is a genuine Cummins overhaul gasket set designed for 1989-1998 5.9L 12-valve Cummins diesel engines. Engineered to meet factory specifications, this upper engine gasket kit includes the critical seals and gaskets required during cylinder head service, top-end rebuilds, and engine overhauls utilizing a .010-inch oversize head gasket.
Manufactured to OEM standards for durability and sealing performance, the Cummins 4089650 kit is ideal for engine rebuilders, repair facilities, and diesel enthusiasts looking to restore reliability and maintain proper combustion sealing. Whether performing a complete engine refresh or replacing a failed head gasket, this genuine Cummins gasket kit provides the quality and fitment required for long-term engine performance.
Features
- Genuine Cummins OEM gasket kit
- Designed for 5.9L 12-valve Cummins engines
- .010-inch oversize head gasket configuration
- Ideal for top-end rebuilds and engine overhauls
- OEM-quality sealing performance
- Manufactured to Cummins factory specifications
- Helps maintain proper compression and combustion sealing
- Designed for durability in demanding diesel applications
- Direct-fit replacement components
- Trusted by professional engine builders and repair facilities
Fitment
- 1989 Dodge Ram 2500 5.9L Cummins Diesel
- 1990 Dodge Ram 2500 5.9L Cummins Diesel
- 1991 Dodge Ram 2500 5.9L Cummins Diesel
- 1992 Dodge Ram 2500 5.9L Cummins Diesel
- 1993 Dodge Ram 2500 5.9L Cummins Diesel
- 1994 Dodge Ram 2500 5.9L Cummins Diesel
- 1995 Dodge Ram 2500 5.9L Cummins Diesel
- 1996 Dodge Ram 2500 5.9L Cummins Diesel
- 1997 Dodge Ram 2500 5.9L Cummins Diesel
- 1998 Dodge Ram 2500 5.9L Cummins Diesel
- 1989-1998 Dodge Ram 3500 5.9L 12-Valve Cummins Diesel
- Industrial and agricultural applications utilizing the 5.9L 12-valve Cummins engine
Note: This gasket kit is intended for engines requiring a .010-inch oversize head gasket. Always verify piston protrusion, block deck condition, and engine specifications before selecting an oversize head gasket kit.
What's Included
- Cummins OEM Upper Engine Gasket Kit
- Oversize .010-inch Head Gasket
- Cylinder Head Gaskets and Seals
- Valve Cover Gaskets
- Intake and Exhaust Manifold Gaskets
- Injector and Fuel System Seals
- Additional Upper Engine Service Gaskets and Sealing Components
Specifications
- Manufacturer: Cummins
- Part Number: 4089650
- Product Type: Upper Engine Gasket Kit
- Engine Platform: 5.9L 12-Valve Cummins
- Head Gasket Thickness: .010 Inch Oversize
- Engine Configuration: Inline 6-Cylinder Diesel
- Fitment Years: 1989-1998
- Construction: OEM Cummins Components
- Application: Engine Repair and Overhaul
- Installation Location: Upper Engine
- Direct Replacement: Yes
- OEM Replacement Part: Yes
Cross Reference Numbers
4089650, Cummins 4089650, 5.9L Cummins Upper Gasket Kit, 12-Valve Cummins Gasket Set, Cummins Overhaul Gasket Kit, Cummins Head Gasket Kit .010 Oversize
FAQ
What engines does the Cummins 4089650 gasket kit fit?
This kit is designed for 1989-1998 5.9L 12-valve Cummins diesel engines used in Dodge Ram trucks and various industrial applications.
What does the .010 oversize designation mean?
The .010 oversize designation refers to a thicker head gasket designed to accommodate specific piston protrusion measurements and engine rebuild requirements.
Is this a genuine Cummins part?
Yes. The 4089650 is a genuine Cummins OEM gasket kit manufactured to factory specifications.
Does this kit include the head gasket?
Yes. This upper engine gasket kit includes the appropriate .010-inch oversize head gasket along with other upper engine sealing components.
When should I use an oversize head gasket?
An oversize head gasket is typically selected based on piston protrusion measurements and engine rebuild specifications. Always consult Cummins service procedures before installation.
Is this kit suitable for a complete engine overhaul?
This is an upper engine gasket kit. Additional lower engine seals and gaskets may be required for a complete engine overhaul depending on the scope of the rebuild.
