Product Overview

Compatible Engine & Equipment Applications

• Heavy-Duty Construction Machinery: Large loaders, motor graders, excavators, bulldozers and off-road mining equipment
• Commercial Heavy Trucks: Class 8 heavy-duty semi-trucks and cargo transport vehicles equipped with NT855 STC powertrain
• Industrial Power Generation: Stationary diesel generator sets, emergency power units and continuous-operation industrial power equipment
• Marine & Special Machinery: Commercial marine auxiliary diesel engines and large agricultural heavy machinery

Official OEM Part Numbers

Kit Components List

• Reinforced MLS multi-layer steel cylinder head gasket, STC-version exclusive, anti-blowout and high-pressure resistant
• High-temperature resistant valve cover gasket and buffer sealing cushions
• Precision intake manifold & exhaust manifold sealing gaskets for STC timing structure
• Full set of heat-resistant valve stem oil seals for high-temperature operation
• Upper engine cooling system gaskets and coolant passage sealing rings
• STC mechanism auxiliary sealing gaskets and precision positioning gaskets
• All matching upper engine paper gaskets, rubber O-rings and sealing accessories

Key Features & Advantages

• STC Version Exclusive Precise Fit: This upper gasket set is professionally customized for Cum mins NT855 STC step timing control engine structure, perfectly matching STC-specific valve train and timing assembly parameters. It supports direct bolt-on installation without cutting or modification, solving the problem of ordinary gaskets failing to fit STC engines.
• Superior High-Temperature & Anti-Blowout Performance: Adopting upgraded thickened MLS metal composite structure and high-temperature resistant materials, it effectively resists extreme combustion temperature and explosion pressure of NT855 high-power engines. It thoroughly avoids common failures such as head gasket bursting, cylinder pressure leakage and engine overheating caused by inferior gaskets.
• Excellent Vibration & Fatigue Resistance: Optimized for long-term high-vibration operation of construction machinery, all sealing parts feature strong compression recovery and anti-deformation ability. It maintains stable sealing tightness under continuous heavy-load operation, preventing recurring air and oil leakage.