# COMP Cams Rocker Arm GM LS3 1.8 3/8 Ultra This Ultra Pro Magnum rocker is made of black oxide coated 8650 chromemoly steel that can withstand up to 850 lbs of spring pressure. Featuring a 1.8 ratio, this rocker fits LS3 with a 3/8" diameter stud. This Part Fits: Year Make Model Submodel 2009-2015 Cadillac CTS V 2007-2014 Cadillac Escalade Base 2011-2014 Cadillac Escalade Luxury 2008-2014 Cadillac Escalade Platinum 2011-2014 Cadillac Escalade Premium 2007-2014 Cadillac Escalade ESV Base 2011-2014 Cadillac Escalade ESV Luxury 2008-2014 Cadillac Escalade ESV Platinum 2011-2014 Cadillac Escalade ESV Premium 2007-2013 Cadillac Escalade EXT Base 2011-2013 Cadillac Escalade EXT Luxury 2011-2013 Cadillac Escalade EXT Premium 2007-2009 Chevrolet Avalanche LT 2007-2009 Chevrolet Avalanche LTZ 2010-2016 Chevrolet Camaro SS 2012-2015 Chevrolet Camaro ZL1 2008-2013 Chevrolet Corvette Base 2010-2013 Chevrolet Corvette Grand Sport 2009-2013 Chevrolet Corvette ZR1 2007-2013 Chevrolet Silverado 1500 LT 2007-2013 Chevrolet Silverado 1500 LTZ 2014-2017 Chevrolet SS Base 2007-2009 Chevrolet Suburban 1500 LT 2007-2009 Chevrolet Suburban 1500 LTZ 2008-2009 Chevrolet Tahoe LTZ 2007-2013 GMC Sierra 1500 Denali 2007-2013 GMC Sierra 1500 SLE 2007-2013 GMC Sierra 1500 SLT 2007-2014 GMC Yukon Denali 2007-2014 GMC Yukon XL 1500 Denali 2007-2009 GMC Yukon XL 1500 SLE 2007-2012,2014 GMC Yukon XL 1500 SLT 2008-2009 Hummer H2 Base 2008-2009 Pontiac G8 GT 2009 Pontiac G8 GXP ## Details - **Price:** 101.31 CAD - **Vendor:** COMP Cams - **Type:** Rocker Arms ## Variants | Variant | Price | Available | |---------|-------|-----------| | Default Title | 101.31 CAD | In stock | ## Images - Photo - Primary - Photo - Primary - Photo - Primary - Logo Image - Logo Image --- > Source: [Standard Auto Part](https://www.standardautopart.com/products/comp-cams-rocker-arm-gm-ls3-1-8-3-8-ultra) > Updated: 2026-06-27