Remanufactured GM Chevrolet 706 862 Cylinder Heads for 4.8L & 5.3L Engines (Pair) with Head Gasket Set and Bolts, Water Pump & Timing Chain Set

Restore your GM engine’s performance with a pair of remanufactured Chevrolet 706 862 cylinder heads for 4.8L and 5.3L engines. Now including a head gasket set, bolts, water pump, and timing set, this comprehensive kit ensures optimal engine performance, reliability, and durability. Perfect for engine rebuilds, these parts meet or exceed OEM specifications and are designed to restore lost power, boost fuel efficiency, and offer long-term reliability.

Fitment Data:

AVALANCHE 1500 02-06 (5.3L)
ENVOY XL 03-04 5.3L
ENVOY XUV 04 5.3L
ESCALADE 02-05 5.3L
EXPRESS 1500 VAN 03-07 8-323 (5.3L);
EXPRESS 2500 VAN 03-07 8-292 (4.8L);
EXPRESS 2500 VAN 03-07 8-323 (5.3L);
EXPRESS 3500 VAN 03-07 8-292 (4.8L);
ISUZU ASCENDER 03-04 5.3L (V8)
RAINIER 04 5.3L
SAVANA 1500 VAN 03-07 8-323 (5.3L);
SAVANA 2500 VAN 03-07 8-292 (4.8L);
SAVANA 2500 VAN 03-07 8-323 (5.3L);
SAVANA 3500 VAN 03-07 8-292 (4.8L);
SIERRA 1500 PICKUP 02-04 5.3L
SIERRA 1500 PICKUP 02-06 4.8L
SIERRA 1500 PICKUP 05-06 5.3L, VIN T (8th digit, opt LM7)
SIERRA 1500 PICKUP 05-06 5.3L, VIN Z (8th digit, opt L59)
SIERRA 1500 PICKUP 07 classic style (creased door skin), 4.8L
SIERRA 1500 PICKUP 07 classic style (creased door skin), 5.3L, VIN T (8th digit, opt LM7)
SIERRA 1500 PICKUP 07 classic style (creased door skin), 5.3L, VIN Z (8th digit, opt L59)
SIERRA 1500 PICKUP 99-01 4.8L, w/o notched decking surface by cylinder 3 and 6
SIERRA 1500 PICKUP 99-01 5.3L, w/o notched decking surface by cylinder 3 and 6
SIERRA 2500 PICKUP 99-00 5.3L, w/o notched decking surface by cylinder 3 and 6
SILVERADO 1500 PICKUP 02-04 5.3L
SILVERADO 1500 PICKUP 02-06 4.8L
SILVERADO 1500 PICKUP 05-06 5.3L, VIN T (8th digit, opt LM7)
SILVERADO 1500 PICKUP 05-06 5.3L, VIN Z (8th digit, opt L59)
SILVERADO 1500 PICKUP 07 classic style (creased door skin), 4.8L
SILVERADO 1500 PICKUP 07 classic style (creased door skin), 5.3L, VIN T (8th digit, opt LM7)
SILVERADO 1500 PICKUP 07 classic style (creased door skin), 5.3L, VIN Z (8th digit, opt L59)
SILVERADO 1500 PICKUP 99-01 4.8L, w/o notched decking surface by cylinder 3 and 6
SILVERADO 1500 PICKUP 99-01 5.3L, w/o notched decking surface by cylinder 3 and 6
SILVERADO 2500 PICKUP 99-00 5.3L, w/o notched decking surface by cylinder 3 and 6
SSR 03-04 (5.3L)
SUBURBAN 1500 00-01 8-323 (5.3L); w/o notched decking surface by cylinder 3 and 6
SUBURBAN 1500 02-06 8-323 (5.3L);
TAHOE 00-01 4.8L, w/o notched decking surface by cylinder 3 and 6
TAHOE 00-01 5.3L, w/o notched decking surface by cylinder 3 and 6
TAHOE 02-06
TRAILBLAZER EXT 03-04 5.3L
YUKON 00-01 4.8L, w/o notched decking surface by cylinder 3 and 6
YUKON 00-01 5.3L, w/o notched decking surface by cylinder 3 and 6
YUKON 02-06 4.8L
YUKON 02-06 5.3L
YUKON XL 1500 00 (5.3L), w/o notched decking surface by cylinder 3 and 6
YUKON XL 1500 01 5.3L, w/o notched decking surface by cylinder 3 and 6
YUKON XL 1500 02-06 5.3L

Key Features:

• Precision Remanufactured: Thoroughly inspected and cleaned to meet OEM specifications, ensuring a perfect fit and optimal performance for GM 4.8L and 5.3L engines.
• OEM Quality: Meets or exceeds OEM standards, offering the same level of reliability and performance as new parts.
• Durable Construction: Crafted from high-quality materials, these cylinder heads are built to withstand tough engine demands, ensuring long-lasting durability.
• Restores Engine Performance: Replacing damaged or worn-out cylinder heads restores engine power, improves fuel efficiency, and reduces the risk of misfires.
• Cost-Effective: Save money compared to expensive dealership parts while getting the same level of performance and quality.
• Includes Head Gasket Set & Bolts: Everything you need for a smooth installation, including a head gasket set and bolts.
• Water Pump & Timing Set Included: This kit comes complete with a water pump and timing set for enhanced engine functionality and long-lasting performance.
• Easy Installation: These cylinder heads fit perfectly into 4.8L and 5.3L GM engines with no modifications needed.

Benefits:

• Improved Engine Performance: Optimized for better airflow and combustion, resulting in restored horsepower, fuel efficiency, and engine smoothness.
• Enhanced Durability: Built to last, these remanufactured cylinder heads are designed to resist cracking, warping, and wear over time.
• Comprehensive Kit: This complete kit ensures you have all the necessary parts, including the water pump and timing set, to restore your engine to its peak performance.
• Affordable Alternative: These remanufactured heads offer an excellent balance of quality and price, providing an affordable alternative to new parts.

Technical Specifications:

• Engine Compatibility: GM 4.8L & 5.3L engines with 706 862 casting number
• Cylinders: V8 engine
• Included Parts: Fully remanufactured cylinder heads, head gasket set, bolts, water pump, and timing set
• Installation: Direct fit for GM 4.8L & 5.3L engines, no modifications required

Why Choose the Remanufactured GM Chevrolet 706 862 Cylinder Heads?

Upgrade your GM 4.8L or 5.3L engine with our remanufactured 706 862 cylinder heads, now including the water pump and timing set. This comprehensive kit ensures a reliable, cost-effective solution for restoring your engine’s performance and longevity. Ideal for engine rebuilds or repairs, this kit offers the reliability you need for years of driving.

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!

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