Brand: Allstar Performance Manufacturer's Part Number: ALL31032 Part Type: Vacuum Pump and Dry Sump Pump Drive Kits Product Line: Allstar Performance Crank Pulley Mandrel Kits Automotive Fittings Part Number: AAF-ALL31032 UPC: 848238019018 Accessory Drive Kit Type: Vacuum pump/Dry sump Harmonic Balancer Bolt Included: No Self-Centering Mandrels Included: No Mandrel Material: Aluminum Mandrel Finish: Blue anodized V-Belt Pulley Included: No Gilmer Pulley Included: No Quantity: Sold as a kit. Notes: Kit includes mandrel components only. AAF-ALL31030 crankshaft pulley required with this kit. Description: Prevent mandrel bolt breakage with Allstar Performance crank pulley mandrel kits. Designed specifically for Allstar crank pulleys, these kits provide you with all of the necessary components to connect the mandrel bolt to the mandrel—not the crankshaft—reducing engine harmonics to prevent loosening or breaking. The mandrel kits include all necessary spacers, pulley guides, and bolts to work with most 3, 4, and 5-stage dry sump pumps or belt-driven fuel pumps. (The crank pulley mandrel is also available separately, if desired.)