Fits: Big Block & Hemi
AR1340 is a 3/8 thick spacer for the crankshaft pulley on any Mopar V-8 engine. This spacer is designed to move the crankshaft pulley outwards by 3/8 of an inch so the water pump will properly line up after installing a motor plate. Pully spacer uses a universal 6 bolt mounting pattern to fit both early and later model engines. Fits any big-block and Hemi engine. AR1340 is machined on both sides with ID and OD locating features to keep the crankshaft pulley concentric to the damper.