ARP 100-3201 5/16-24 X 1.250 Black Hex Water Pump Pulley Stud Kit

ARP 100-3201 5/16-24 X 1.250 Black Hex Water Pump Pulley Stud Kit

PART# ARP100-3201

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ARP water pump pulley stud kits offer a reliable solution for installing fan spacers that are employed to facilitate the removal of clutch fans-or simply position a "direct drive" fan closer to the radiator for optimum cooling. ARP delivers a variety of stud kits ranging in overall lengths from 1.250 in. to 4.500 in. Also, the kits are available in polished stainless steel or black oxide finished 8740 chromoly, with either hex or 12-point nuts, and all include washers. ARP water pump pulley studs are nominally rated at 170,000 psi tensile strength and far superior to even Grade 8 hardware, which is an important safety consideration for securing a fast-spinning fan. Choose the length needed for your application.


  • Sold as a set of 4
  • Black Oxide Finish
  • Thread Size 5/16"-24

Product Attributes

Emission Code5
Manufacturer Part Number100-3201
Material8740 chromoly
Product TypePulley Studs
Part NumberARP100-3201



This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.

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      *Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages.

      Some parts are not legal for use in California or other states with similar regulations.