Fitment: 2003-2007 GMC C4500 Topkick 6.6L 2003-2007 GMC C4500 Topkick 8.1L 2003-2007 GMC C5500 Topkick 6.6L 2003-2007 GMC C5500 Topkick 8.1L 2003-2007 GMC C6500 Topkick 7.2L 2003-2007 GMC C6500 Topkick 7.8L 2003-2007 GMC C6500 Topkick 8.1L 2007 GMC C7500 Topkick 4.8L 2003-2007 GMC C7500 Topkick 7.2L 2003-2007 GMC C7500 Topkick 7.8L 2003-2007 GMC C7500 Topkick 8.1L 2011-2013 Kenworth T400 8.3L 2011-2013 Kenworth T400 8.9L 2007 Kenworth T600A 10.8L 2007 Kenworth T600A 11.1L 2007 Kenworth T600A 12.5L 2007 Kenworth T600A 15.0L 1988 1991-1994 Kenworth T800 10.0L 1991-1992 Kenworth T800 10.3L .
