Description
The 4089648 Upper Engine Gasket Kit is specifically designed for the Cummins 4BT 3.9L series diesel engines. This comprehensive kit provides all the necessary seals and gaskets required for a top-end overhaul or cylinder head repair. Engineered with high-grade materials, it ensures a perfect seal under extreme pressure and temperature.
Key Specifications
- OEM Part Number: 4089648
- Engine Compatibility: Cummins 4BT / 4BTA / 4BTAA (3.9 Liter)
- Application: Construction machinery, marine engines, power generators, and automotive 4BT swaps.
- Material: Multi-Layer Steel (MLS) or High-Performance Composite (depending on specific batch), Viton rubber seals.
What’s Included in the Kit?
- 1 x Cylinder Head Gasket (Premium Grade)
- 4 x Valve Cover Gaskets
- 1 x Intake Manifold Gasket
- 1 x Exhaust Manifold Gasket
- 8 x Valve Stem Seals (High-Temperature Resistant)
- 1 x Thermostat Gasket
- Various O-rings, Injector Seals, and Turbocharger Gaskets
Why Choose Our 4089648 Kit?
- Precision Engineering: Manufactured to exact OEM specifications for a guaranteed fit.
- Superior Sealing: Prevents oil leaks, coolant consumption, and compression loss.
- Durability: Built to withstand the rugged demands of heavy-duty diesel applications.
- Cost-Effective: A complete solution in one package, saving you time and money compared to buying individual parts.





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