JIMS, 48-84 solid adjustable tappet. Standard .731" O.D 48-84 Panhead 66-84 Shovel head (NU). Use with 53-84 style tappet blocks

Non-hydraulic tappet. Weight 86 grams each. Must be used with 53-84 B.T. hydraulic style tappet blocks (available in polished billet aluminum from Jims as MCS 520033). Note: Must fabricate your own pushrods. Required length unknown at JIMS and depending on engine and cam. JIMS 517746 adjuster screw set & 513466 lock nut set must be purchased separately. 48-84 Panhead 66-84 Shovel head (NU). Use with 53-84 style tappet blocks