A500 A518 A618 42RE 42RH 46RE 46RH 47RE 47RH 48RE Sonnax Overdrive Shim Kit
Sonnax overdrive shim kit eliminates the need for multiple OE selective spacers by providing one .175" thick washer and three .010" thick shims for setting the clearance for proper washer end play.
Combine .175" thick primary washer with the necessary number of .010" shims to equal the thickness needed for desired overdrive end clearance. Place the .010" thick shims onto the piston first, then the .175" washer. Hold shims in place with assembly lube.