Performance Tool oxygen sensor socket designed for 7/8" hex O2 sensors on V-twin motorcycles. Features a 3/8" drive with a cutaway design to clear the sensor wire, making removal and installation easier in tight engine bays. Features Fits 7/8" hex oxygen sensors 3/8" drive 6-point socket Cutaway portion for wire clearance Offset design for confined spaces Heavy-duty alloy steel construction Lifetime warranty Specifications Brand: Performance Tool Manufacturer Part #: W84008 UPC: 039564840081 Drive Size: 3/8" drive Hex Size: 7/8" Length: 2.8 in Weight: 0.35 lbs Country of Origin: China (Mainland) Fitment Fits V-twin motorcycles with 7/8" hex oxygen sensors, including Harley-Davidson and Indian Motorcycle models. Frequently Asked Questions What size oxygen sensors does this fit? 7/8" hex oxygen sensors. Confirm your bike's sensor size before ordering. What drive size does this socket use? 3/8" drive, compatible with standard 3/8" ratchets and breaker bars. Why is there a cutaway in the design? The cutaway allows the O2 sensor wire to pass through without interference, making installation and removal easier in confined engine bays. Is this socket offset? Yes — the offset design helps access O2 sensors in tight spaces on modern V-twin engines. Does this come with a warranty? Yes — Performance Tool backs this socket with a lifetime warranty.