Description
New Cummins 6BT 12V 5.9L Casting 3925400 Loaded Complete Reinforced Cylinder Head
Premium Heavy-Duty Reinforced Replacement Cylinder Head
This premium, fully loaded cylinder head is engineered specifically for Cummins 6BT 12V 5.9L diesel engines. It features a brand-new, reinforced casting designed to eliminate common cracking issues and restore optimal performance. Fully assembled and ready to install right out of the box, it provides maximum durability for demanding heavy-duty applications.
🛠️ In-House Machining Process
- Debris-Free Preparation: Every new casting is chemically cleaned and blown out to remove all residual machining oils and manufacturing debris. This ensures your engine’s oiling system remains uncontaminated from the first start-up.
- In-House Precision Machining: Unlike “shelf-stock” heads, we perform all final machine work in-house. This includes final guide sizing and precision valve seat cutting to ensure perfect geometry and clearances.
- Pressure & Integrity Testing: To go beyond the factory standard, we pressure-test every head to 60 PSI. This verifies that the casting is free of porosity leaks or internal defects that could compromise the cooling system.
- Dimensional Inspection: Our technicians perform a multi-point inspection of the gasket-sealing surface. This ensures the head is perfectly flat and meets tight OEM tolerances for a flawless fit.
- Professional Assembly & Setup: Valvetrain components are installed and verified in a clean-room environment. Each head comes fully assembled with valves and springs, ready for a direct bolt-on installation.
- Vacuum-Seal Verification: Every intake and exhaust port is Vacuum Tested. This guarantees a 100% airtight seal between the valves and seats, ensuring maximum compression right out of the box.
📊 Technical Specifications
- Engine Size: 5.9L (6-Cylinder)
- Engine Type: Diesel
- Casting Number: 3925400
- Condition: New
- Core Return Required
🚘 Common Applications
Direct fit for Cummins 5.9L 12V 6BT engines found in:
- Years: 1989–1998
- Fitment: Fits all 1989-1998 12-Valve 5.9L motors, including Dodge Ram 2500, Ram 3500, and more.
- Vehicle & Equipment Types: Light/Heavy Duty Trucks, Industrial Machinery, and Marine Applications
📦 Core Return & Warranty
- Core Process: No upfront core fee. Receive your new head and compare it to your original before installation. Once complete, use the pre-paid return label included in your shipment. Cores must be returned within 30 days. Click here for Core Policy.
- Warranty: Includes a 2-Year Warranty covering defects in materials and workmanship. Click here for Warranty details.
- Please Note: Parts, marine, and performance items carry specific warranty limitations — please review our full Warranty Policy for details.
Reviews
There are no reviews yet.