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RCD LS CHEVY Blower Hub COMES WITH SEAL 21605 ,
1/2" THICK 6 BOLT SPACER
IF YOU HAVE DUAL 3/16" KEYWAY YOU WILL NEED 354510-08 STEP KEY
ALL COMES WITH THE HUB UNLESS YOU DEDUCT THE SPACER , OR SPACER
You need a .500" Spacer to allow the pulley to have a .300" Register when using on a Crank Support - COMES WITH IT
Use our 6-3/8" Magnetic Trigger Wheel FOR CRANK TRIGGER
This LS hub is made from steel, it has 3/8-24 threaded holes and is made to fit a standard crankshaft with one 1/4" keyway and one 3/16" keyway.