PROMO MBRP 4" Filter Back, Single Side, Black Coated, Chevy/GMC 2500/3500 Duramax 2011 - 2019 $474.99
PROMO MBRP 4" Filter Back, Dual Outlet Single Side, AL, Chevy/GMC 2500/3500 Duramax 2011 - 2019 $464.99