This direct replacement drum brake wheel cylinder was specifically engineered to match the fit, function and performance of the original wheel cylinder on particular vehicles. It is manufactured and tested for quality assurance.Vehicle model years this part fits:Chevrolet LCF 3500: 2016, 2017 Chevrolet LCF 4500HD: 2017 Chevrolet W3500 Tiltmaster: 2003, 2004, 2005, 2006, 2007, 2008, 2009 Chevrolet W4500 Tiltmaster: 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 GMC W3500 Forward: 2003, 2004, 2005, 2006, 2007, 2008 GMC W4500 Forward: 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 Isuzu NPR: 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 Isuzu NPR-HD: 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 Isuzu Reach: 2013, 2014, 2015