Derale Blockoff Oil Filter Adapter - 10 AN Female O-Ring Inlet and Outlet - Dual 1/8 in NPT Female Ports - Black - GM LS-Series 35621 KIR81140KIT Duration 301 / 309

Duration 301 / 309

High Fidelity true stereo

Allstar Torsion Stops

Clevises Included

Automatic Transmission Clean

Derale Blockoff Oil Filter Adapter - 10 AN Female O-Ring Inlet and Outlet - Dual 1/8 in NPT Female Ports - Black - GM LS-Series 35621 KIR81140KIT Duration 301 / 309This Billet Aluminum LS Engine Adapter features a built in 180 degreesF Thermostat to help reduce engine wear and horse power loss. The oil thermostat allows the oil to bypass the cooler until it reaches 180 degreesF at which point the internal thermostatic valve will close and force 100% of the oil through the cooler while maintaining a constant pressure system. This process allows the engine to achieve the ideal operating temperature quicker before