B&M's Locking Dipstick is designed for use in a Dedenbear case or GM Powerglide transmission. Engineered with a locking short dip stick in conjunction with a redesigned transmission shield, it attaches to the servo cover. A precision machined, billet aluminum screw-on cap has a knurled finish and comes with an O-ring seal to prevent leaks. The dipstick plugs into the transmission with a sealing grommet that comes standard on most new GM transmissions.