# Cometic 01-07 GM 6.6L Duramax Timing Cover Seal COMETIC Timing Cover Seals are manufactured from the best materials available and are suited for all types of environments. Each seal meets or exceeds OEM quality. - All of Cometic's gaskets and seals have been tested on both the street and the track as well as vigorous Dyno shakedowns - Meets Or Exceeds OEM Quality This Part Fits: Year Make Model Submodel 2006-2015 Chevrolet Express 2500 Base 2006-2015 Chevrolet Express 2500 LS 2006-2015 Chevrolet Express 2500 LT 2006-2015 Chevrolet Express 3500 Base 2006-2015 Chevrolet Express 3500 LS 2006-2015 Chevrolet Express 3500 LT 2001-2005 Chevrolet Silverado 2500 HD Base 2015-2018 Chevrolet Silverado 2500 HD High Country 2001-2006 Chevrolet Silverado 2500 HD LS 2001-2018 Chevrolet Silverado 2500 HD LT 2007-2018 Chevrolet Silverado 2500 HD LTZ 2003-2018 Chevrolet Silverado 2500 HD WT 2007 Chevrolet Silverado 2500 HD Classic LS 2007 Chevrolet Silverado 2500 HD Classic LT 2007 Chevrolet Silverado 2500 HD Classic WT 2001-2005 Chevrolet Silverado 3500 Base 2001-2006 Chevrolet Silverado 3500 LS 2001-2006 Chevrolet Silverado 3500 LT 2004,2006 Chevrolet Silverado 3500 WT 2007 Chevrolet Silverado 3500 Classic LS 2007 Chevrolet Silverado 3500 Classic LT 2007 Chevrolet Silverado 3500 Classic WT 2015-2018 Chevrolet Silverado 3500 HD High Country 2007-2018 Chevrolet Silverado 3500 HD LT 2007-2018 Chevrolet Silverado 3500 HD LTZ 2007-2018 Chevrolet Silverado 3500 HD WT 2006-2015 GMC Savana 2500 Base 2007-2015 GMC Savana 2500 LS 2007-2015 GMC Savana 2500 LT 2006-2015 GMC Savana 3500 Base 2006-2015 GMC Savana 3500 LS 2006-2015 GMC Savana 3500 LT 2002-2005,2015-2018 GMC Sierra 2500 HD Base 2011-2018 GMC Sierra 2500 HD Denali 2001-2002,2006 GMC Sierra 2500 HD SL 2001-2018 GMC Sierra 2500 HD SLE 2001-2018 GMC Sierra 2500 HD SLT 2003-2014 GMC Sierra 2500 HD WT 2007 GMC Sierra 2500 HD Classic SL 2007 GMC Sierra 2500 HD Classic SLE 2007 GMC Sierra 2500 HD Classic SLT 2007 GMC Sierra 2500 HD Classic WT 2002-2005 GMC Sierra 3500 Base 2001-2002,2006 GMC Sierra 3500 SL 2001-2006 GMC Sierra 3500 SLE 2001-2006 GMC Sierra 3500 SLT 2004-2006 GMC Sierra 3500 WT 2007 GMC Sierra 3500 Classic SL 2007 GMC Sierra 3500 Classic SLE 2007 GMC Sierra 3500 Classic SLT 2007 GMC Sierra 3500 Classic WT 2015-2018 GMC Sierra 3500 HD Base 2011-2018 GMC Sierra 3500 HD Denali 2007-2018 GMC Sierra 3500 HD SLE 2007-2018 GMC Sierra 3500 HD SLT 2007-2014 GMC Sierra 3500 HD WT 2006 Hummer H1 Alpha ## Details - **Price:** 86.96 CAD - **Vendor:** Cometic Gasket - **Type:** Gasket Kits ## Variants | Variant | Price | Available | |---------|-------|-----------| | Default Title | 86.96 CAD | In stock | ## Images - Photo - Primary - User 9 - Logo Image --- > Source: [Standard Auto Part](https://www.standardautopart.com/products/cometic-01-07-gm-6-6l-duramax-timing-cover-seal) > Updated: 2026-06-26