4089371 4024928 3804740 Upper Head Gasket Set For Cum mins N14 Engine 3803716 Top Gasket

Product Overview

Compatible Engine & Equipment Applications

• Heavy-Duty Semi-Trucks: Freightliner, Kenworth, Peterbilt, International long-haul trucks equipped with Cum mins N14 powertrain
• Large Construction Machinery: Heavy loaders, motor graders, off-road dump trucks and mining engineering machinery powered by N14 industrial engines
• Industrial Power Generation Units: Stationary diesel generator sets, emergency power supply systems and continuous-operation industrial power equipment
• Marine & Special Heavy Equipment: Commercial marine auxiliary diesel engines and large industrial supporting power devices

Official OEM Part Numbers

Kit Components List

• Upgraded thickened MLS multi-layer steel cylinder head gasket, anti-blowout and high-pressure resistant for 14L high-power engines
• Full set of heat-resistant valve stem oil seals, preventing valve train oil leakage and blue smoke emission
• Heavy-duty reinforced valve cover gasket with excellent compression resilience and vibration resistance
• Precision intake manifold & exhaust manifold gaskets for tight air sealing and stable intake/exhaust efficiency
• Upper engine cooling system gaskets and coolant passage sealing rings to avoid coolant leakage and engine overheating
• Turbocharger mounting gasket and upper engine auxiliary O-ring seal set
• All matched upper engine paper gaskets, rubber seals and precision sealing accessories

Key Features & Advantages

• 100% OEM Exact Fit & Zero Modification: Manufactured strictly according to Cum mins original factory specifications and precision tolerance standards. This N14 upper gasket set supports direct bolt-on installation without cutting, grinding or secondary modification, perfectly matching stock N14, CELECT and CELECT+ engines, eliminating assembly gaps and hidden leakage risks.
• Upgraded MLS Anti-Blowout Sealing Performance: Adopts upgraded multi-layer steel composite structure and high-temperature resistant materials, specially optimized for N14 14L large-displacement high-power engines. It effectively resists extreme combustion pressure and ultra-high operating temperature, thoroughly solving the common failure of head gasket blowout, maintaining stable cylinder compression and original engine power output.
• Extreme High-Temperature & Anti-Aging Durability: All sealing accessories adopt premium oil-resistant, heat-resistant and anti-aging composite materials. They maintain stable sealing performance under long-term high-temperature, high-vibration and heavy-load working conditions, avoiding seal hardening, aging and failure caused by long-hour continuous operation, greatly extending top-end maintenance cycles.
• Full Top-End Fault Repair Capability: This all-in-one N14 upper gasket kit completely covers all upper engine sealing points, one-time solving typical faults such as cylinder pressure drop, engine overheating, air leakage, coolant mixing and valve train oil seepage, realizing thorough and permanent top-end repair.
• Cost-Effective & Downtime Reduction: Effectively eliminates recurring top-end sealing failures of N14 series engines, avoiding repeated disassembly and maintenance. It significantly reduces equipment downtime loss and daily operating costs, fully restoring engine operational stability and fuel economy for heavy-duty equipment.

Important Compatibility Notes

Warranty & Service