GM LT 5.3L, 6.2L Heat Bolt Kit ES73121

Fel-Pro ES73121 Cylinder Head Bolt Set – GM 5.3L / 6.2L Gen V V8 (Set of 11)

Fel-Pro ES73121 is an OE-style torque-to-yield cylinder head bolt set for late-model GM 5.3L and 6.2L Gen V V8 engines. The cold-formed, heat-treated M12 head bolts are designed for one-time use and give you the proper clamping load when you’re doing head gaskets, cam swaps, or full top-end work on 2014-up GM trucks, SUVs, and performance cars.

• Brand: Fel-Pro

• Part Number: ES73121

• Product Type: Cylinder head bolt set (head fasteners)

• Engine Fitment: GM Gen V 5.3L & 6.2L V8 (L83, L86, LT1, LT4 and related – verify by year/engine/RPO)

•  Vehicle Coverage:

  • Chevy Silverado 1500 / 1500 LD, 2500HD, 3500HD

  • GMC Sierra 1500 / 1500 Limited, 2500HD, 3500HD

  • Chevy Tahoe / Suburban, GMC Yukon / Yukon XL

  • Chevy Camaro, Corvette

  • Cadillac Escalade / Escalade ESV

  • Chevy Express 2500/3500, GMC Savana 2500/3500 (select 6.2L/5.3L)

• Fastener Style: Bolt, torque-to-yield (TTY), non-reusable

• Thread Diameter: M12

• Head Drive Type: Hex

• Material: Steel

• Finish/Color: Black

• Grade Type: Premium OE-style replacement

• Assembly Lube: Not included

• Quantity in Kit: Set of 11 bolts – services one cylinder head

• Required Per Engine: Two kits needed to do both heads on a V8

• Design Features:

  • Cold-formed, then heat-treated for strength and consistent clamping

  • Application-specific length and shank design for proper load on Gen V aluminum heads

  • Intended to replace factory TTY head bolts any time the heads are removed

• Use Case: Head gasket jobs, cam swaps, top-end rebuilds

• Country of Origin: USA