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Earl's Racing Products Head Bolt Set-Hex Head

Earl's Racing Products Head Bolt Set - Hex Head - GM LS Engines - 1997-2003

Part # HBS-001ERL Be the first to write a review
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Earl's Racing Products head bolts are made from premium quality 170,000 psi chrome moly alloy steel (about 15% stronger than Grade 8). These bolts have a reduced wrench size (choose from 12-point or hex head) for extra socket clearance (provides extra clearance to rocker arms when re-torqueing heads). The wide flanged head provided more support for the extra thick chrome moly washers. These head bolts are reusable and are the ideal way to upgrade the performance of your engine, and eliminate the hassle and cost of replacing factory style torque-to-yield style bolts each time the cylinder heads are removed. Black oxide finish & sold in complete engine sets. Made in the USA. Includes: (4) M11 x 2.0 x 102mm Long Bolts (16) M11 x 2.0 x 158mm Long Bolts (20) M11 Washers (10) M8 x 1.25 x 48mm Long Bolts (10) M8 Washers Anti-Seize


  • Material - Chromemoly Alloy Steel
  • Yield Strength - 170,000 PSI
  • Finish - Black Oxide
  • Reduced Wrenching Size – Provides Extra Socket Clearance
  • Choose Form 12-Point or Hex Head Styles
  • Includes Premium Head Bolts, Washers & Anti-Seize Lubricant
  • Sold In Complete Engine Sets
  • Reusable - Not Torque-To-Yield

About Earls

Earl's Performance Plumbing brought aviation fluid transfer technology to the automotive performance market over five decades ago. With the most extensive line of plumbing products available, you can count on Earl's from start to finish.

Brand Earls
Emission Code5
EngineGM Small Block Gen III/IV (LS Based)
FinishBlack Oxide
Head StyleHex
Product TypeCylinder Head Bolts
PSI Rating170,000
Thread SizeM11x2.0MM & M8x1.25MM
Washer IncludedYes
Wrench Size13MM & 10MM
Part NumberHBS-001ERL

This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.

Does not Fit LS9 Engines.

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