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

Compatibility

These cylinder heads fit the following vehicles (non-turbo only):

• G Series Vans Turbo
• GMC / Chevrolet Vans Turbo
• Hummer Turbo

Quality Assurance

At Heavy Duty Parts Company, we ensure each cylinder head is thoroughly cleaned, inspected, and pressure tested.

Warranty Information

Heavy Duty Parts Company offers a two-year unlimited mileage warranty. A copy of the warranty card will be included with your invoice. Please read the warranty terms carefully:

• Parts warranty only – all original cylinder heads must be returned for warranty.

• GM 6.5 OHV Diesel Cylinder Head

Diesel Tips For A Smooth Engine

Learn about the engine here

Upgrade your GM, Chevy, or Hummer with our new 6.5 OHV Diesel Cylinder Heads. Featuring a 60° angle, these heads C Series trucks, G Series vans, K Series trucks, and Hummers. Quality tested and ready for installation.

Heavy Duty Parts Company – Core Returns Policy

At Heavy Duty Parts Company, core returns are essential to our ability to provide high-quality, cost-effective cylinder heads to our customers. These returned cores supply essential components, such as keepers, springs, and retainers, which are critical to engine performance.

No Core Charge – Just Send It Back!

Unlike other companies, we do not charge a core fee upfront. Instead, we rely on our customers to return their used cores to keep our supply chain running smoothly.

Why Core Returns Matter

• Many small but essential parts from cores are reused to maintain OEM-quality cylinder heads.
• Returning cores keeps prices competitive by reducing the need for costly new components.
• It supports sustainability by minimizing waste and conserving resources.

Send Back All Components

To ensure the quality and integrity of our remanufacturing process, we ask that you return all components that were originally included with your new cylinder head. This includes items such as:

• Rocker arms
• Camshafts (if applicable)
• Any other hardware that came with your purchase

Easy & Free Core Return Process

• Each purchase includes a prepaid core return label in a plastic sleeve on the box.
• Simply pack your core with all included components, attach the label, and drop it off with the carrier—no extra cost to you.
• Returned cores undergo inspection and recycling, ensuring maximum efficiency.

Customer Partnership & Sustainability

By returning your core and its components, you help maintain a reliable supply chain, ensuring we can continue offering top-quality products at the best prices. This process not only benefits your wallet but also contributes to a greener and more efficient automotive industry.

We appreciate your support in keeping our business and the industry running smoothly!