Lisle 61130 Diesel Filter Wrench 8" wrench with a unique half-moon design provide easier access to the fuel filter High strength steel prevents the wrench from flexing while loosening stubborn filter collars Four teeth grab the vent cap securely to prevent damage 8" wrench works Detroit Diesel DD13, DD15 and DD16 engines found in Paccar, Daimler Trucks North America, and Volvo Fits 8 inch Davco