Product Overview:
The 4089649 is DCEC upgraded upper gasket kit for 6BT5.9/6BTA5.9 12V engines. Made per DCEC specs with heat-resistant composite & metal gaskets to stop fluid leakage. Fits DCEC trucks, loaders and generator sets for top-end overhaul.
4089649 upper gasket kit Specification:
| Category | Details |
|---|---|
| Part Number | 4089649 (DCEC Dongfeng Cummins) |
| OEM/Brand | DCEC Dongfeng Cummins |
| Replacement Part Number | 3802363 (US Cummins original) |
| Fit Engines | 6BT5.9 / 6BTA5.9, 12-Valve, 5.9L Inline 6 Diesel Engine |
| Applications | Light truck, wheel loader, excavator, stationary generator |
| Cylinder Head Gasket Material | 3-layer steel composite sandwich gasket, high temperature resistant, anti-blowout |
| Valve Cover/Intake/Exhaust Gasket Material | Aramid fiber composite, oil & coolant resistant |
| Seal Material | NBR fluorine rubber compound |
| Kit Contents (Upper Only, No Lower Parts) | 1× Multi-layer cylinder head gasket; Intake manifold gasket set; Exhaust manifold gasket set; Valve cover gasket; Injector tube seals, valve stem oil seals; Thermostat housing & cooling passage small gaskets |
| Working Temperature Range | -40℃ ~ +320℃ |
| Max Working Pressure | 12 bar combustion pressure |
| Dimensional Tolerance | DCEC factory dimensional standard, direct install without modification |
✅DCEC upgraded kit, plug-and-play for 6BT5.9/6BTA5.9 12V engines
✅ Multi-layer steel head gasket + high-performance composite gaskets resist high temp, oil & coolant leakage
✅Strictly manufactured to DCEC dimensional tolerances for precise installation
✅ Complete upper-end sealing accessories for full cylinder head overhaul
✅Durable construction for heavy-duty trucks, loaders and generator set applications
Why Choose us?
✅Exact Cummins specifications, perfect fit
✅Rigorously tested for superior reliability
✅Maintains peak engine performance & fuel efficiency
✅Minimizes downtime & repair costs
✅Backed by global Cummins service network
Name: Aandy
Mobile:
Tel:19924579082
Email:1941346301@qq.com
Add:5F, Block 4, Next Industrial Park, 136 Zhongkang Road, Futian Dist, Shenzhen