ARP Wheel Studs 100-7721 Fabrication & Fasteners They use an o-ring sealed

They use an o-ring sealed top to positively seal against water and dirt

ultra lightweight One-piece billet rail is CNC machined to ensure a precision flat surface for superior sealing Airtight sealing allows the engine to pull greater vacuum for improved ring seal and power Mating if the billet rail to the valve cover is done with a smooth transition

Black Vinyl Extra thick

Trim modifications to floor pans is often necessary

ARP Wheel Studs 100-7721 Fabrication & Fasteners They use an o-ring sealedBrand: ARP Manufacturer's Part Number: 100 7721 Part Type: Wheel Studs Product Line: ARP Wheel Studs Automotive Fittings Part Number: ARP 100 7721 UPC: 672036034245 Wheel Stud Style: Press in Wheel Stud Thread Size: M12 x 1. 5 Stud Material: Chromoly steel Stud Finish: Gold Knurl Diameter (in.): 0. 585 in. Knurl Diameter (mm): 14. 86mm Underhead Length (in.): 2. 450 in. Underhead Length (mm): 62. 23mm Shoulder Length (in.): 0. 23 Quick Start Nose: Yes