4913963 Genuine Cummins Camshaft For NTA855 NH855 Engines

Product Overview:

The 4913963 camshaft is an ultra-heavy-duty forged steel upgrade engineered for Cummins NTA855 and NT855 engines operating in the world’s most demanding conditions. Designed as a high-performance replacement for standard camshafts, it is optimized for STC (Step Timing Control) fuel systems, delivering exceptional durability and consistent power output under continuous full-load operatio.

Key Features:

✅ Reinforced super heavy-duty design for high-power NTA855 STC engines

✅ High-density forged steel body with deep induction hardening, higher hardness and anti-fatigue performance

✅ Optimized cam curve ensures steady power output under extreme heavy load

✅ Strong bending resistance, less deformation in long-time continuous operation

✅ Perfect interchangeable with original parts, easy direct installation

Specifications & Applications:

✅100% dimension tested, stable performance matching high-load working demand

✅Longer service life than ordinary camshafts, effectively reduce maintenance cost

✅Sufficient stock, fast delivery to shorten equipment downtime

✅Professional aftermarket technical support for engine matching guidance