Wide Application - Compatible with Velvet Drive Borg Warner 71C Series,72C Series,73C Series,5000 Series, Liberty Series; Hurth HSW 450A, HWS 450D, HSW 630H, HSW 630A, HSW 630V, HSW 800A, HSW 800V, HSW 800A3; ZF 45A 63 63A 63IV 80A 80IV 85A 85IV. Replace Part Number - Replace 1000-640-004 3312308029 1000640004; Chrysler 0006798E; Crusader 25542; Mercruiser 47613; Paragon 16739; PCM R153011; ZF/Hurth 3312308029. Superior Material – Made of high quality steel, copper and plastic. Featuring high carbon steel stem hardened to 48 Rockwell C for maximum wear resistance and durability. Applicable Tools - Use 7/8" wrench on nut to remove or install switch. Satisfaction Guarantee - Besttruck values customers shopping experience and provides customers with a good shopping environment. If you are not satisfied with the product when you receive, you can choose to return it within 30 days, we provide a one-year warranty, or you can feel free to contact us. Compatible with Velvet Drive Borg Warner 71C Series,72C Series,73C Series,5000 Series, Liberty Series; Hurth HSW 450A, HWS 450D, HSW 630H, HSW 630A, HSW 630V, HSW 800A, HSW 800V, HSW 800A3; ZF 45A 63 63A 63IV 80A 80IV 85A 85IV.