ATF is the lifeblood of your automatic transmission, so don’t put just any fill tube or dipstick in your trans. Get the peace of mind only a locking unit from B&M can offer! B&M’s locking transmission dipsticks were designed to allow quick fluid level checks and they feature hot and cold lever indicators marked right on the stick for easy reference. The B&M logo is milled right into the top of the cap to let everyone know that you mean business and the billet cap is knurled to give you a sure grip no matter how greasy your hands get. Put a piece of B&M jewelry under the hood of your ride to keep an eye on your transmissions fluid level.