97-02 Ford Y Mount with 6 Rib Pulleys.
This fits F Series Trucks, Explorer, Expedition, Mustang with the 4.6L and 5.4L Engines and 6 Rib Belts.
Please select the appropriate options for your vehicle. 6 rib, 8 rib, 3g or 6g plug. 3 G plugs are D shaped and have a secondary plug attached. 6G is more rectangular and a single plug only.
These 320a options have 150-160a at idle rpm of 600+ and 340+a at 1800+ RPM.