Overview Reviews Product Description ALLISON EXTENSION HOUSING GASKET Details SKU:A1-EXT-HG Item #:A1-EXT-HG Brand: SunCoast Diesel 2019 Chevrolet Silverado 2500 HD 2019 Chevrolet Silverado 3500 HD 2019 GMC Sierra 2500 HD 2019 GMC Sierra 3500 HD 2018 Chevrolet Silverado 2500 HD 2018 Chevrolet Silverado 3500 HD 2018 GMC Sierra 2500 HD 2018 GMC Sierra 3500 HD 2017 Chevrolet Silverado 2500 HD 2017 Chevrolet Silverado 3500 HD 2017 GMC Sierra 2500 HD 2017 GMC Sierra 3500 HD 2016 Chevrolet Silverado 2500 HD 2016 Chevrolet Silverado 3500 HD 2016 GMC Sierra 2500 HD 2016 GMC Sierra 3500 HD 2015 Chevrolet Silverado 2500 HD 2015 Chevrolet Silverado 3500 HD 2015 GMC Sierra 2500 HD 2015 GMC Sierra 3500 HD 2014 Chevrolet Silverado 2500 HD 2014 Chevrolet Silverado 3500 HD 2014 GMC Sierra 2500 HD 2014 GMC Sierra 3500 HD 2013 Chevrolet Silverado 2500 HD 2013 Chevrolet Silverado 3500 HD 2013 GMC Sierra 2500 HD 2013 GMC Sierra 3500 HD 2012 Chevrolet Silverado 2500 HD 2012 Chevrolet Silverado 3500 HD 2012 GMC Sierra 2500 HD 2012 GMC Sierra 3500 HD 2011 Chevrolet Silverado 2500 HD 2011 Chevrolet Silverado 3500 HD 2011 GMC Sierra 2500 HD 2011 GMC Sierra 3500 HD 2010 Chevrolet Silverado 2500 HD 2010 Chevrolet Silverado 3500 HD 2010 GMC Sierra 2500 HD 2010 GMC Sierra 3500 HD 2009 Chevrolet C4500 Kodiak 2009 Chevrolet C5500 Kodiak 2009 Chevrolet Silverado 2500 HD 2009 Chevrolet Silverado 3500 HD 2009 GMC C4500 Topkick 2009 GMC C5500 Topkick 2009 GMC Sierra 2500 HD 2009 GMC Sierra 3500 HD 2008 Chevrolet C4500 Kodiak 2008 Chevrolet C5500 Kodiak 2008 Chevrolet Silverado 2500 HD 2008 Chevrolet Silverado 3500 HD 2008 GMC C4500 Topkick 2008 GMC C5500 Topkick 2008 GMC Sierra 2500 HD 2008 GMC Sierra 3500 HD 2007 Chevrolet C4500 Kodiak 2007 Chevrolet C5500 Kodiak 2007 Chevrolet Silverado 2500 HD 2007 Chevrolet Silverado 2500 HD Classic 2007 Chevrolet Silverado 3500 Classic 2007 Chevrolet Silverado 3500 HD 2007 GMC C4500 Topkick 2007 GMC C5500 Topkick 2007 GMC Sierra 2500 HD 2007 GMC Sierra 2500 HD Classic 2007 GMC Sierra 3500 Classic 2007 GMC Sierra 3500 HD 2006 Chevrolet C4500 Kodiak 2006 Chevrolet C5500 Kodiak 2006 Chevrolet Silverado 2500 HD 2006 Chevrolet Silverado 3500 2006 GMC C4500 Topkick 2006 GMC C5500 Topkick 2006 GMC Sierra 2500 HD 2006 GMC Sierra 3500 2005 Chevrolet C4500 Kodiak 2005 Chevrolet C5500 Kodiak 2005 Chevrolet Silverado 2500 HD 2005 Chevrolet Silverado 3500 2005 GMC C4500 Topkick 2005 GMC C5500 Topkick 2005 GMC Sierra 2500 HD 2005 GMC Sierra 3500 2004 Chevrolet C4500 Kodiak 2004 Chevrolet C5500 Kodiak 2004 Chevrolet C6500 Kodiak 2004 Chevrolet C7500 Kodiak 2004 Chevrolet Silverado 2500 HD 2004 Chevrolet Silverado 3500 2004 Chevrolet T6500 2004 Chevrolet T7500 2004 GMC C4500 Topkick 2004 GMC C5500 Topkick 2004 GMC C6500 Topkick 2004 GMC C7500 Topkick 2004 GMC Sierra 2500 HD 2004 GMC Sierra 3500 2004 GMC T6500 2004 GMC T7500 Shipping Information Requires Shipping: Item Requires Shipping Weight: 2.0 lbs. Package Dimensions: W15.0000” x H2.5000” x L18.2500” Product Videos Custom Field Product Reviews Write a Review Write a Review × SUNCOAST A1-EXT-HG ALLISON EXTENSION HOUSING GASKET FOR GM 2500HD/3500HD WITH 6.6L DURAMAX Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *
Quick view SUNCOAST A1-CASE-HG ALLISON CASE HOUSING GASKET FOR 01-19 GM 2500HD/3500HD WITH 6.6L DURAMAX MSRP: Was: Now: $26.19 Choose Options Quick view SUNCOAST A1-BC2 ALLISON BILLET C2 HUB FOR 01-10 GM 2500HD/3500HD WITH 6.6L DURAMAX MSRP: Was: Now: $577.15 Choose Options Quick view SUNCOAST A1-BFP-2 ALLISON BILLET FLEXPLATE FOR 06-10 GM 2500HD/3500HD WITH 6.6L DURAMAX MSRP: Was: Now: $480.15 Choose Options Quick view SUNCOAST A1-109102 ALLISON BILLET OUTPUT SHAFT FOR 11-19 GM 2500HD/3500HD WITH 6.6L DURAMAX MSRP: Was: Now: $727.50 Choose Options Quick view SUNCOAST A1-TCB ALLISON TRANSFER CASE BRACE FOR 01-07 GM 2500HD/3500HD WITH 6.6L DURAMAX MSRP: Was: Now: $189.15 Choose Options
Quick view SUNCOAST A1-BC2 ALLISON BILLET C2 HUB FOR 01-10 GM 2500HD/3500HD WITH 6.6L DURAMAX MSRP: Was: Now: $577.15 Choose Options Quick view SUNCOAST A1-BFP-2 ALLISON BILLET FLEXPLATE FOR 06-10 GM 2500HD/3500HD WITH 6.6L DURAMAX MSRP: Was: Now: $480.15 Choose Options Quick view SUNCOAST A1-109102 ALLISON BILLET OUTPUT SHAFT FOR 11-19 GM 2500HD/3500HD WITH 6.6L DURAMAX MSRP: Was: Now: $727.50 Choose Options Quick view SUNCOAST A1-TCB ALLISON TRANSFER CASE BRACE FOR 01-07 GM 2500HD/3500HD WITH 6.6L DURAMAX MSRP: Was: Now: $189.15 Choose Options
Quick view SUNCOAST A1-BFP-2 ALLISON BILLET FLEXPLATE FOR 06-10 GM 2500HD/3500HD WITH 6.6L DURAMAX MSRP: Was: Now: $480.15 Choose Options Quick view SUNCOAST A1-109102 ALLISON BILLET OUTPUT SHAFT FOR 11-19 GM 2500HD/3500HD WITH 6.6L DURAMAX MSRP: Was: Now: $727.50 Choose Options Quick view SUNCOAST A1-TCB ALLISON TRANSFER CASE BRACE FOR 01-07 GM 2500HD/3500HD WITH 6.6L DURAMAX MSRP: Was: Now: $189.15 Choose Options
Quick view SUNCOAST A1-109102 ALLISON BILLET OUTPUT SHAFT FOR 11-19 GM 2500HD/3500HD WITH 6.6L DURAMAX MSRP: Was: Now: $727.50 Choose Options Quick view SUNCOAST A1-TCB ALLISON TRANSFER CASE BRACE FOR 01-07 GM 2500HD/3500HD WITH 6.6L DURAMAX MSRP: Was: Now: $189.15 Choose Options
Quick view SUNCOAST A1-TCB ALLISON TRANSFER CASE BRACE FOR 01-07 GM 2500HD/3500HD WITH 6.6L DURAMAX MSRP: Was: Now: $189.15 Choose Options