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Allstar Crank Pulley Mandrel ALL31032 Kit prevents mandrel bolt breakage and is made specifically for use with Allstar ALL31030 crank pulley. Mandrel is attached to the crankshaft pulley with three...

Allstar Crank Mandrel Kit ALL31031 Kit prevents mandrel bolt breakage and is made specifically for use with Allstar ALL31030 crank pulley. Mandrel is attached to the crankshaft pulley with three...

Allstar Crank Pulley 2 Groove 4.750in Dia ALL31030 Specifically for short or Corvette water pumps, pulleys work with power steering pump and pulley to provide a ratio within the GM specified RPM...

Allstar Mandrel Spacer 1.25in ALL31028 Aluminum spacers properly space and align pulleys when used with a 1/8" keyed mandrel. The same spacers are found in the ALL31031 Mandrel Kit. Sold each.

Allstar Mandrel Spacer 1.00in ALL31026 Aluminum spacers properly space and align pulleys when used with a 1/8" keyed mandrel. The same spacers are found in the ALL31031 Mandrel Kit. Sold each.

Allstar Mandrel Spacer .750in ALL31024 Aluminum spacers properly space and align pulleys when used with a 1/8" keyed mandrel. The same spacers are found in the ALL31031 Mandrel Kit. Sold each.

Allstar Mandrel Spacer .500in ALL31022 Aluminum spacers properly space and align pulleys when used with a 1/8" keyed mandrel. The same spacers are found in the ALL31031 Mandrel Kit. Sold each.

Allstar Mandrel Spacer .250in ALL31020 Aluminum spacers properly space and align pulleys when used with a 1/8" keyed mandrel. The same spacers are found in the ALL31031 Mandrel Kit. Sold each.

Allstar Billet Water Neck Spacer ALL30375 Billet aluminum spacer fits between intake manifold and water neck providing connection options for temperature senders or additional water lines. 1" tall...

Allstar Billet Water Neck 20AN Black ALL30373 Billet aluminum water necks fit most Chevy V8, accept most standard thermostats and swivel a full 360 degree to simplify connection of LH or RH radiator...

Allstar Billet Water Neck 16AN Black ALL30372 Billet aluminum water necks fit most Chevy V8, accept most standard thermostats and swivel a full 360 degree to simplify connection of LH or RH radiator...

Allstar Billet Water Neck 1-3/4in Black ALL30371 Billet aluminum water necks fit most Chevy V8, accept most standard thermostats and swivel a full 360 degree to simplify connection of LH or RH...