Assembly Advantages

This genuine Cummins OEM complete cylinder head assembly arrives fully equipped with valves, springs, keepers, seals, and precision-machined seats – ready to bolt on and restore original compression, airflow, and thermal management. Ideal for major overhauls where time and reliability are critical.

Volgen Power sources only authentic Cummins components, ensuring exact tolerances, material quality, and performance that matches factory specifications.

Key Performance Features

• Ready-to-Install Convenience — Pre-assembled with all valve train components for faster rebuilds and reduced labor
• Premium Casting & Machining — High-grade iron construction with accurate combustion chambers and coolant passages
• Enhanced Durability — Reinforced design resists cracking and warping under high cylinder pressures
• Optimal Sealing — Factory-finished surfaces deliver perfect head gasket contact and leak-free operation
• Validated Compatibility — Meets Cummins standards for marine, industrial, and heavy equipment ratings

Common Applications

Perfect for demanding environments, including:

• Marine propulsion and generator sets (NTA855-M series)
• Heavy-duty construction and earthmoving equipment
• Mining haul trucks and excavators
• Power generation and oilfield pumping units
• Large agricultural and forestry machinery

Engine Compatibility

Designed specifically for Cummins 855 series engines:

• NT855 / NTA855
• NH855 / NTC855
• NT495 / NT743 variants
• Marine, industrial, and generator configurations

Technical Summary

Volgen Power stocks genuine Cummins OEM cylinder head assemblies like the 4915442 for immediate worldwide dispatch.

Accelerate your NT855 rebuild with a factory-fresh complete head – contact us today for availability, pricing, or technical details. Request your quote now!