This Katech KAT-7636 (Formerly HME-G68V-2) timing chain for the GM Gen III/IV LSx engine is manufactured to a higher tensile strength for greater accuracy and longevity. This is the same chain used in the C5-R and C6-R racing engines built by Katech. We recommend replacing your factory chain with this upgraded version when doing camshaft installations or other modifications where the chain is easily accessed, especially on higher mileage engines. Never broken in all of C5-R racing and durability testing, this easy replacement utilizes production sprockets.

Single bolt sprocket for engines with 58 tooth reluctor wheel

Fitment guide for these and more (Gasoline V8 models only):

CADILLAC CTS 2007-2015
CHEVROLET AVALANCHE 2007-2013
CHEVROLET CAMARO 2010-2015
CHEVROLET CAPRICE 2011-2017
CHEVROLET COLORADO 2009-2012
CHEVROLET CORVETTE 2007-2013
CHEVROLET EXPRESS 1500 2008-2013
CHEVROLET EXPRESS 2500 2008-2013
CHEVROLET EXPRESS 3500 2008-2013
CHEVROLET SILVERADO 1500 2007-2013
CHEVROLET SS 2014-2017
CHEVROLET SUBURBAN 1500 2007-2013
CHEVROLET TAHOE 2007-2013
CHEVROLET TRAILBLAZER 2007-2009
GMC CANYON 2009
GMC ENVOY 2007-2009
GMC SAVANA 2008-2013
GMC SIERRA 1500 2007-2013
GMC YUKON 2007-2013
GMC YUKON XL 1500 2007-2013
HUMMER H3 2008-2009
HUMMER H3T 2009
PONTIAC G8 2008-2009
SAAB 9-7X 2007-2009