New Cylinder Head For Cummins 6C8.3 G8.3 ISC CM2150 ISLE4 CM850 4987974

The Cummins 4987974 Cylinder Head delivers precision-engineered performance for 6C8.3, G8.3, ISC, CM2150, ISLE4, and CM850 engines, ensuring optimal combustion and extended engine life in heavy-duty marine and industrial applications. This OEM-quality replacement features robust cast iron construction with pre-installed valves, springs, and seals for seamless installation and superior heat dissipation. Ideal for e-commerce marine equipment suppliers targeting Cummins diesel rebuilds, it supports high-pressure operations while minimizing downtime.

Cummins 4987974 Cylinder Head Key Specifications:

• Compatibility: Fits Cummins 6C8.3, G8.3, ISC 8.3L, ISL 8.9L, CM2150, ISLE4, CM850 engines with electronic injectors; cross-references 3969722, 4942117, 5348478.​

• Dimensions and Weight: Approximately 86-93 kg, sized 23x13x86 cm for efficient shipping and handling in workshops.​

• Material: High-strength cast iron head with hardened valve seats for durability under extreme temperatures and pressures.

Performance Features:

-> Loaded assembly includes intake/exhaust valves, valve seals, spCummins 4987974 cylinder headrings, retainers, and guides for plug-and-play reliability.

-> Enhances fuel efficiency and power output in marine propulsion, generators, and industrial machinery.

-> Recommend replacing head bolts, gaskets, and performing machining for like-new sealing.

Pros:

• Perfect for marine engineering rebuilds, construction equipment, and diesel generators needing ASME-compliant reliability.
• Reduces repair costs versus new heads while outperforming standard aftermarket options in thermal management and vibration resistance.
• Supports Cummins QuickServe for verified fitment in high-hour engines.