PLEASE ENSURE YOU ARE ORDERING THE CORRECT INTAKE BOLT ANGLE

Product Overview

Enhance your GM, Chevy, or Hummer with our new 6.5 OHV Diesel Aftermarket Cylinder Head, featuring a 90° angle. These heads are complete with valves and springs, and are identified by casting #567.

Upgrade your vehicle’s performance with our high-quality 6.5 GM Diesel Cylinder Heads. Designed for durability and precision, these cylinder heads are perfect for GM diesel engines, offering reliable performance for a wide range of applications. Whether you’re driving a Chevrolet, GMC, or Hummer with a 6.5L diesel engine, these cylinder heads ensure optimal functionality and extended engine life. A core return is required for this purchase.

Why Choose Our 6.5 GM Diesel Cylinder Heads?

• Superior Craftsmanship: Each cylinder head is manufactured or remanufactured to meet or exceed OEM specifications, ensuring a perfect fit and long-lasting reliability.
• Enhanced Durability: Built to withstand the high pressures and temperatures of diesel engines, these heads are constructed from premium-grade materials for extended wear resistance.
• Improved Performance: Enjoy smoother engine operation, increased power, and better fuel efficiency with a high-quality cylinder head replacement.

Compatibility

These cylinder heads fit the following vehicles:

• C Series Trucks Turbo and Non Turbo
• G Series Vans Non Turbo
• Hummer Non Turbo
• K Series Trucks Turbo and Non Turbo

If you have a Hummer Turbo or Turbo Van please refer to this listing https://heavydutypartscompany.com/product/brand-new-pair-6-5-ohv-gm-diesel-aftermarket-cylinder-heads-60-angle-copy/

CHEVROLET 2500 PICKUP 92-93 8-395 (6.5L, diesel);
CHEVROLET 2500 PICKUP 94-95 8-395 (6.5L, diesel); w/turbo, VIN F (8th digit)
CHEVROLET 2500 PICKUP 96-98 8-395 (6.5L, diesel); VIN F (8th digit)
CHEVROLET 2500 PICKUP 99-00 8-395 (6.5L, diesel);
CHEVROLET 3500 PICKUP 92-02 8-395 (6.5L, diesel);
GMC 1500 PICKUP 94-95 8-395 (6.5L, diesel); w/turbo, VIN F (8th digit)
GMC 1500 PICKUP 96-98 8-395 (6.5L, diesel); VIN F (8th digit)
GMC 2500 PICKUP 92-93 8-395 (6.5L, diesel);
GMC 2500 PICKUP 94-95 8-395 (6.5L, diesel); w/turbo, VIN F (8th digit)
GMC 2500 PICKUP 96-98 8-395 (6.5L, diesel); VIN F (8th digit)
GMC 2500 PICKUP 99-00 8-395 (6.5L, diesel);
GMC 3500 PICKUP 01-02 8-395 (6.5L, diesel); (I-beam front axle only), (VIN F, 8th digit)
GMC 3500 PICKUP 92-00 8-395 (6.5L, diesel); (VIN F, 8th digit)
SUBURBAN 1500 95-99 8-395 (6.5L, diesel);
SUBURBAN 2500 94-99 8-395 (6.5L, diesel);

BLAZER/JIMMY (full size) 94 8-395 (6.5L, turbo diesel)

CHEVROLET 1500 PICKUP 94-95 8-395 (6.5L, diesel); w/o turbo; (VIN P, 8th digit)

CHEVROLET 1500 PICKUP 94-95 8-395 (6.5L, diesel); w/turbo (VIN S, 8th digit)

CHEVROLET 1500 PICKUP 96-98 8-395 (6.5L, diesel); (VIN S, 8th digit)

CHEVROLET 20 VAN 94-95 8-395 (6.5L, diesel);

CHEVROLET 2500 PICKUP 94-95 8-395 (6.5L, diesel); w/o turbo

CHEVROLET 2500 PICKUP 94-95 8-395 (6.5L, diesel); w/turbo, VIN S (8th digit)

CHEVROLET 2500 PICKUP 96-98 8-395 (6.5L, diesel); VIN S (8th digit)

CHEVROLET 30 VAN 94-96 8-395 (6.5L, diesel);

GMC 1500 PICKUP 94-95 8-395 (6.5L, diesel); w/o turbo

GMC 1500 PICKUP 94-95 8-395 (6.5L, diesel); w/turbo, VIN S (8th digit)

GMC 1500 PICKUP 96-98 8-395 (6.5L, diesel); VIN S (8th digit)

GMC 2500 PICKUP 94-95 8-395 (6.5L, diesel); w/o turbo

GMC 2500 PICKUP 94-95 8-395 (6.5L, diesel); w/turbo, VIN S (8th digit)

GMC 2500 PICKUP 96-98 8-395 (6.5L, diesel); VIN S (8th digit)

GMC 2500 VAN 94-95 8-395 (6.5L, diesel);

GMC 3500 VAN 94-96 8-395 (6.5L, diesel);

TAHOE 95-99 8-395 (6.5L, turbo diesel)

YUKON 94-97 8-395 (6.5L, turbo diesel)

Quality Assurance

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

Heavy Duty Parts Company – Core Returns Policy

Effective December 17, 2025

At Heavy Duty Parts Company, core returns are essential to our ability to provide high-quality, cost-effective cylinder heads. Returned cores supply critical components—such as keepers, springs, and retainers—that are vital to proper engine performance and allow us to maintain OEM-level quality.

No Upfront Core Charge

Unlike many suppliers, we do not charge a core fee upfront. Instead, we rely on customers to return their used cores within the required timeframe.

Core Return Requirements

• Cores are due within 30 days of the purchase date

• If a core is not returned within 60 days, the product warranty is void

• Unreturned cores will be charged as follows:

  • Cylinder heads under $600: $200 per unreturned core

  • Cylinder heads $600 and above: $400 per unreturned core

Customers needing additional time may contact us to request an extension. Approved extensions will prevent core charges from being applied.

Core Return Process

Cylinder heads are shipped with prepaid core return labels included in packets attached to the outside of each box. If labels are missing, customers should contact us for replacements prior to returning the core.

Core Eligibility

Some cylinder heads do not require a core return. In certain cases, core requirements may be waived at our discretion.

Why Core Returns Matter

• Reused core components help maintain OEM-quality standards

• Core returns allow us to keep pricing competitive

• Recycling cores supports sustainability by reducing waste and conserving resources

This policy applies to all purchases made on or after December 17, 2025.

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!

Shipping Information

• Domestic Shipping: Rates apply to the continental United States only. For shipping to Alaska, Hawaii, Guam, Virgin Islands, and Puerto Rico, please email or call for rates.

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 or Chevy with our new 6.5 OHV Diesel Cylinder Head. Featuring a 90° angle and casting #567, these heads fit 1992-1999 C Series trucks, G Series vans and K Series trucks.. Quality tested and ready for installation.