Turn One Steering - GM Flow Restrictor for Type II PumpHose Connection: GM O ring Pump Application: Saginaw Type II Pump Material: Black Anodized Aluminum This flow restrictor is for GM Type II power steering pumps commonly found in later model GM vehicles and aftermarket accessory drive kits. The restrictor fitting uses the stock GM o ring hose connection, and is precision CNC machined in the USA at our factory in Michigan. Our flow restrictors come standard with a 1. 3, 2. 0, 2. 5 and 3. 0 GPM flow rate