ARP Water Pump Bolts are available in both polished stainless steel or black oxide finish chrome moly. You also can choose between standard hex head bolts or compact 12-point fasteners. Also available as part of ARP’s complete Engine & Accessory kits. PartNumber : arp434-3201 Description : Water Pump Bolt Kit; w/ Thermostat Housing Bolts; Hex Head Material : Stainless Steel Engine Components::Hardware Kits - Other