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ARP recommends these bolts to be used as an upper supercharger pulley fastener
Product Line: Radium Engineering AN ORB to 5-Bolt SAE Adapters
UPC: 793348035987Please note: This is a special order item by Stealth Ride
1-1/2" Billet Aluminium Weld-On Filler with Red Cap
ARP 5/16"-18 x 4.000 hex SS bolts (622-4000) 250 ARP recommends these bolts toARP 5 16" 18 x 4. 000 hex SS bolts (622 4000) ARP Stainless Steel Bolts 622 4000 ARP stainless steel bolts are rated at 170,000 psi to provide a substantial extra margin of safety over Grade 8 and other hardware. They're available in hex head or 12 point styles and a variety of lengths and sizes for use on cars, boats, trailers, and more. Stock up on these truly maintenance free bolts so you'll have them when the need arises. Order the ARP stainless
US$ 18.00
US$ 21.00
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US$ 11.95