5.9 Cummins New Cylinder Head with Valve Train – DK Engine DK-CU5.9-12VCHL

Revive Your Legendary 12-Valve Cummins

Is your 1989–1998 5.9L 12-Valve Cummins losing compression, blowing coolant, or showing signs of a tired or cracked cylinder head? Restore factory-level performance and reliability with this brand-new, fully loaded cylinder head from DK Engine Parts. This is not a remanufactured or used core — it’s a precision new casting engineered specifically for the classic Dodge Ram 2500/3500 5.9L 12-Valve (6BT) diesel.

Complete & Ready to Install This head arrives fully loaded with a complete new valve train, so you get everything you need in one box:

• Brand-new cylinder head casting
• All-new intake & exhaust valves (black nitride coated for superior heat and wear resistance)
• All-new valve springs, seats, seals, retainers, and keepers

The black nitride coating on the valves provides excellent durability under the high temperatures and pressures of diesel combustion, helping extend service life and maintain consistent performance.

Direct Fitment & Compatibility

• Fits: 1989–1998 Dodge Ram 2500/3500 with 5.9L 12-Valve Cummins
• Replaces OE#: 3925400
• Optimized for 7mm injectors
• Direct bolt-on replacement — no modifications required for stock or mildly modified trucks

Why This Head Matters The cylinder head is the heart of your engine’s combustion process. It seals the combustion chamber, manages airflow, and houses the valve train. A compromised head robs power, hurts fuel economy, and can lead to expensive failures. This new loaded head restores proper compression, optimizes intake/exhaust flow, and gives your classic Cummins the fresh top-end it deserves — whether you’re towing, daily driving, or keeping a work truck on the road for years to come.

Key Benefits

• Brand-new casting (no core exchange or hidden flaws from remanufacturing)
• Complete valve train saves time and ensures all components are fresh and matched
• Black nitride valves for better heat resistance and longevity
• Restores power, torque, and efficiency
• Limited 1-Year Warranty

Specifications

• SKU: DK-CU5.9-12VCHL
• Warranty: Limited 1-Year
• Shipping: Truck freight only

Note: Always verify your engine model, casting number, and injector size (7mm) before ordering. This head is designed for 1989–1998 12-Valve applications only.

Invest in the Longevity of Your 12-Valve Cummins Give your truck the reliable foundation it needs. Order this new loaded cylinder head today and get back on the road with confidence.