This item is an Elgin cylinder head bolt set for SOME 2004-2020 GM LS-series V-8 engines; see below for fitment information. P/N EHC-131S. This bolt set will not fit LT-series engines. Feel free to message us with any fitment questions.

FALCON TECH NOTE: Beginning with the 2004 year model, GM changed the head bolt design for these engines. This bolt set is for 2nd-design bolts that feature only two (2) different bolt lengths. The 1st-design bolt set has three (3) different length bolts. Before ordering, please make sure this bolt set is the set that you need.

The below referenced VIN corresponds to the eighth character of vehicle VIN on dash plate. Buyer will receive enough bolts for two cylinder heads.

BOLT SPECIFICATIONS

• Head Style: Hex head; 15mm and 10mm 
• Bolt Thread Size: 11mm x 2.0 and 8mm x 1.25
• Under Head Length: 45mm and 100mm
• Torque to Yield: Yes

BUICK FITMENT

• 5.3L 2004-2004 Rainier; VIN-P

CADILLAC FITMENT

• 5.3L 2004-2005 Escalade and ESV; VIN-T 
• 5.7L 2004-2005 CTS; VIN-S
• 6.0L 2004-2009 CTS, Escalade, ESV; VIN-N,U
• 6.2L 2009-2015 CTS-V VIN-P
• 6.2L 2007-2009 Escalade, ESV, EXT; VIN-2,8

CHEVROLET FITMENT

• 4.8L 2004-2017 Silverado, Express, Tahoe; VIN-A,C,V
• 5.3L 2004-2006 Avalanche; VIN-T,Z
• 5.3L 2009-2012 Colorado; VIN-L,P
• 5.3L 2004-2014 Express; VIN-4,T,Z
• 5.3L 2004-2007 Silverado; VIN-B,T,Z
• 5.3L 2004-2004 SSR; VIN-P
• 5.3L 2004-2006 Suburban and Tahoe; VIN-T,Z
• 5.3L 2004-2005 Trailblazer; VIN-P
• 5.7L 2004-2004 Corvette and Camaro; VIN-G,S
• 6.0L 2005-2007 Corvette; VIN-U
• 6.0L 2004-2020 Express; VIN-B,G,K,U
• 6.0L 2004-2013 Silverado; VIN-B,G,K,N,U
• 6.0L 2005-2006 SSR; VIN-H
• 6.0L 2004-2013 Suburban; VIN-G,K,U
• 6.0L 2006-2009 Trailblazer; VIN-H
• 6.2L 2008-2013 Corvette and Camaro; VIN-P,W
• 6.2L 2009-2013 Silverado; VIN-2
• 6.2L 2014-2017 SS; VIN-W
• 6.2L 2008-2009 Tahoe; VIN-2,8

GMC FITMENT

• 4.8L 2004-2017 Savana, Sierra, Yukon; VIN-A,C,V
• 5.3L 2009-2012 Canyon; VIN-L,P
• 5.3L 2004-2004 Envoy; VIN-P
• 5.3L 2004-2014 Savana; VIN-4,T,Z
• 5.3L 2004-2007 Sierra; VIN-B,T,Z
• 5.3L 2004-2006 Yukon; VIN-T,Z
• 5.3L 2004-2006 Yukon XL; VIN-T,Z
• 6.0L 2004-2020 Savana; VIN-B,G,K,U
• 6.0L 2004-2013 Sierra; VIN-B,G,K,U
• 6.0L 2004-2006 Yukon; VIN-U
• 6.0L 2004-2006 Yukon XL; VIN-U
• 6.2L 2007-2013 Sierra; VIN-2
• 6.2L 2007-2009 Yukon and Yukon XL; VIN-2,8

HUMMER FITMENT

• 5.3L 2008-2010 H3 and H3T; VIN-L,P
• 6.0L 2004-2007 H2; VIN-U
• 6.2L 2008-2009 H2; VIN-2,8

PONTIAC FITMENT

• 5.7L 2004-2004 GTO; VIN-G
• 6.0L 2005-2006 GTO; VIN-U
• 6.2L 2009-2009 G8; VIN-W

We offer some of the quickest delivery times to most of the US on eBay. We have locations in Alabama, Louisiana, and Tennessee. These locations allow us to offer our customers quick, efficient service and delivery times. The free shipping option is available for some orders shipped within the lower 48 US-states.

Falcon Performance specializes in shipments to Sweden, Germany, Australia, Norway, Denmark, France, United Kingdom, Iceland, South Africa, New Zealand, Japan, Canada, and many other countries. Please use the shipping calculator for orders outside the continental USA. We do combine shipping costs for purchasing multiple items. Before paying, add all desired items to your eBay cart and then pay for all at one time. The eBay system will calculate the combined shipping discount.

Please note that "free shipping" is not free for us but only to you. We pay to ship all parts to customers. Should you decide to return your purchase due to 'buyers remorse', we will refund the parts price less a restocking fee for the return; to mostly recoup our original shipping costs. Any damage to box or parts will alter the amount of the restocking fee. In many cases, we must buy new boxes from our suppliers.

Put our 75+ combined years of experience to work for you... Thank you, the Falcon Team!