Stock spin-on transmission filters come up short.PPE recognized the need for better filtration for the hard-working Allison 1000 and 2000 transmissions, so a superior filter was developed which addresses limitations of the standard "shorty filter".Duramax Premium High-Efficiency Spin-On Transmission Fluid FilterInside the PPE Double-Deep Spin-On Filter is 2.72 times more filter media surface area. This increased surface area allows improved fluid flow and filtering.The PPE Double-Deep Filter actually traps particles down to 15 microns, that is half the size of what the standard spin-on filter catches. These improvements help create a cleaner flow of oil to vital internal components, resulting in smooth, more responsive shifts.Do more to protect your Allison transmission and realize better performance.GM Equivalent P/N: 29539579GM Equivalent P/N: 12471607Features:Filters particles down to 15 microns2.72 times more filter media surface areaImproved fluid flow and filteringPromotes smoother, more responsive shiftsThread Size: 3/4-20Compatible with Allison 1000 (2500HD, 3500HD)Compatible with Allison 2000 (4500HD, 5500HD)Compatible Vehicles2019 GMC Sierra 3500HD 8 Cyl 6.6 Liter Turbo2019 GMC Sierra 2500HD 8 Cyl 6.6 Liter Turbo2019 Chevrolet Silverado 3500HD 8 Cyl 6.6 Liter Turbo2019 Chevrolet Silverado 2500HD 8 Cyl 6.6 Liter Turbo2018 GMC Sierra 3500HD 8 Cyl 6.6 Liter Turbo2018 GMC Sierra 2500HD 8 Cyl 6.6 Liter Turbo2018 Chevrolet Silverado 3500HD 8 Cyl 6.6 Liter Turbo2018 Chevrolet Silverado 2500HD 8 Cyl 6.6 Liter Turbo2017 GMC Sierra 3500HD 8 Cyl 6.6 Liter Turbo2017 GMC Sierra 2500HD 8 Cyl 6.6 Liter Turbo2017 Chevrolet Silverado 3500HD 8 Cyl 6.6 Liter Turbo2017 Chevrolet Silverado 2500HD 8 Cyl 6.6 Liter Turbo2016 GMC Sierra 3500HD 8 Cyl 6.6 Liter Turbo2016 GMC Sierra 2500HD 8 Cyl 6.6 Liter Turbo2016 GMC Savana 8 Cyl 6.6 Liter Turbo2016 Chevrolet Silverado 3500HD 8 Cyl 6.6 Liter Turbo2016 Chevrolet Silverado 2500HD 8 Cyl 6.6 Liter Turbo2015 GMC Sierra 3500HD 8 Cyl 6.6 Liter Turbo2015 GMC Sierra 2500HD 8 Cyl 6.6 Liter Turbo2015 GMC Savana 8 Cyl 6.6 Liter Turbo2015 Chevrolet Silverado 3500HD 8 Cyl 6.6 Liter Turbo2015 Chevrolet Silverado 2500HD 8 Cyl 6.6 Liter Turbo2014 GMC Sierra 3500HD 8 Cyl 6.6 Liter Turbo2014 GMC Sierra 2500HD 8 Cyl 6.6 Liter Turbo2014 GMC Savana 8 Cyl 6.6 Liter Turbo2014 Chevrolet Silverado 3500HD 8 Cyl 6.6 Liter Turbo2014 Chevrolet Silverado 2500HD 8 Cyl 6.6 Liter Turbo2013 GMC Sierra 3500HD 8 Cyl 6.6 Liter Turbo2013 GMC Sierra 2500HD 8 Cyl 6.6 Liter Turbo2013 GMC Savana 8 Cyl 6.6 Liter Turbo2013 Chevrolet Silverado 3500HD 8 Cyl 6.6 Liter Turbo2013 Chevrolet Silverado 2500HD 8 Cyl 6.6 Liter Turbo2012 GMC Sierra 3500HD 8 Cyl 6.6 Liter Turbo2012 GMC Sierra 2500HD 8 Cyl 6.6 Liter Turbo2012 GMC Savana 8 Cyl 6.6 Liter Turbo2012 Chevrolet Silverado 3500HD 8 Cyl 6.6 Liter Turbo2012 Chevrolet Silverado 2500HD 8 Cyl 6.6 Liter Turbo2011 GMC Sierra 3500HD 8 Cyl 6.6 Liter Turbo2011 GMC Sierra 2500HD 8 Cyl 6.6 Liter Turbo2011 GMC Savana 8 Cyl 6.6 Liter Turbo2011 Chevrolet Silverado 3500HD 8 Cyl 6.6 Liter Turbo2011 Chevrolet Silverado 2500HD 8 Cyl 6.6 Liter Turbo2010 GMC Sierra 3500HD 8 Cyl 6.6 Liter Turbo2010 GMC Sierra 2500HD 8 Cyl 6.6 Liter Turbo2010 Chevrolet Silverado 3500HD 8 Cyl 6.6 Liter Turbo2010 Chevrolet Silverado 2500HD 8 Cyl 6.6 Liter Turbo2009 GMC Sierra 3500HD 8 Cyl 6.6 Liter Turbo2009 GMC Sierra 2500HD 8 Cyl 6.6 Liter Turbo2009 Chevrolet Silverado 3500HD 8 Cyl 6.6 Liter Turbo2009 Chevrolet Silverado 2500HD 8 Cyl 6.6 Liter Turbo2008 GMC Sierra 3500HD 8 Cyl 6.6 Liter Turbo2008 GMC Sierra 2500HD 8 Cyl 6.6 Liter Turbo2008 Chevrolet Silverado 3500HD 8 Cyl 6.6 Liter Turbo2008 Chevrolet Silverado 2500HD 8 Cyl 6.6 Liter Turbo2007 GMC Sierra 3500HD 8 Cyl 6.6 Liter Turbo2007 GMC Sierra 3500 Classic 8 Cyl 6.6 Liter Turbo2007 GMC Sierra 2500HD Classic 8 Cyl 6.6 Liter Turbo2007 GMC Sierra 2500HD 8 Cyl 6.6 Liter Turbo2007 Chevrolet Silverado 3500HD 8 Cyl 6.6 Liter Turbo2007 Chevrolet Silverado 2500HD 8 Cyl 6.6 Liter Turbo2006 GMC Sierra 3500HD 8 Cyl 6.6 Liter Turbo2006 GMC Sierra 2500HD 8 Cyl 6.6 Liter Turbo2006 Chevrolet Silverado 3500HD 8 Cyl 6.6 Liter Turbo2006 Chevrolet Silverado 2500HD 8 Cyl 6.6 Liter Turbo2005 GMC Sierra 3500HD 8 Cyl 6.6 Liter Turbo2005 GMC Sierra 2500HD 8 Cyl 6.6 Liter Turbo2005 Chevrolet Silverado 3500HD 8 Cyl 6.6 Liter Turbo2005 Chevrolet Silverado 2500HD 8 Cyl 6.6 Liter Turbo2004 GMC Sierra 3500HD 8 Cyl 6.6 Liter Turbo2004 GMC Sierra 2500HD 8 Cyl 6.6 Liter Turbo2004 Chevrolet Silverado 3500HD 8 Cyl 6.6 Liter Turbo2004 Chevrolet Silverado 2500HD 8 Cyl 6.6 Liter Turbo2003 GMC Sierra 3500HD 8 Cyl 6.6 Liter Turbo2003 GMC Sierra 2500HD 8 Cyl 6.6 Liter Turbo2003 Chevrolet Silverado 3500HD 8 Cyl 6.6 Liter Turbo2003 Chevrolet Silverado 2500HD 8 Cyl 6.6 Liter Turbo2002 GMC Sierra 3500HD 8 Cyl 6.6 Liter Turbo2002 GMC Sierra 2500HD 8 Cyl 6.6 Liter Turbo2002 Chevrolet Silverado 3500HD 8 Cyl 6.6 Liter Turbo2002 Chevrolet Silverado 2500HD 8 Cyl 6.6 Liter Turbo2001 GMC Sierra 3500HD 8 Cyl 6.6 Liter Turbo2001 GMC Sierra 2500HD 8 Cyl 6.6 Liter Turbo2001 Chevrolet Silverado 3500HD 8 Cyl 6.6 Liter Turbo2001 Chevrolet Silverado 2500HD 8 Cyl 6.6 Liter Turbo