Brand New Pair 6.5 OHV GM Diesel Aftermarket Cylinder Heads (60° Angle) W/ Head Gasket Set and Bolts

Brand New Pair 6.5 OHV GM Diesel Aftermarket Cylinder Heads (60° Angle) W/ Head Gasket Set and Bolts

Enhance your GM, Chevy, or Hummer engine with these brand-new 6.5L OHV diesel aftermarket cylinder heads, featuring the specific 60° intake bolt angle.

This is a pair of brand-new aftermarket cylinder heads for GM 6.5L diesel engines. These heads come fully loaded with valves and springs, and include a complete head gasket set and bolt kit, providing a comprehensive solution for turbo-equipped vans and Hummers.

🛠️ In-House Machining Process

• Debris-Free Preparation: Every new casting is chemically cleaned and blown out to remove all residual machining oils, metal shavings, and manufacturing debris. This ensures your 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 before the head reaches the assembly bench.
• 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 or oiling systems.
• Dimensional Inspection: Our technicians perform a multi-point inspection of the gasket-sealing surface and bore alignment. 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. We check spring heights and seal seating to ensure the assembly is balanced and ready for high-performance use.
• 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 and peak performance right out of the box.

📊 Technical Specifications

• Condition: Brand New Aftermarket
• Quantity: Pair (2 Cylinder Heads)
• Engine Compatibility: 6.5L OHV GM Diesel
• Intake Bolt Angle: 60° (Specifically for Turbo Van/Hummer applications)
• Includes: Full Head Gasket Set and Head Bolt Kit
• Components: Fully assembled with new valves and springs
• Material: Premium-grade materials for high-pressure diesel environments

🚘 Fitment Applications

Designed for 6.5L Turbo Diesel Engines with 60° Intake Manifolds:

• G-Series Vans (Turbo): Chevrolet & GMC
• Hummer H1 (Turbo): AM General
• Note: Not for non-turbo trucks/vans (requires 90° angle heads).