ARP Stud - 12 mm x 1.75 Thread - 4.750 in Long - Broached - Chromoly - Black Oxide Stainless Steel Fittings Select proper thread size for

Select proper thread size for line used

All ST5 shields are now interchangeable across all ST5 helmets

Plugs provide a location to bleed air from cooling system of most GM LS engines

EZ Mount system packages the manifold and upgraded heavy-duty compressor into a factory-assembled bracket

with parts from fuel and exhaust systems to body fasteners and everything in-between

ARP Stud - 12 mm x 1.75 Thread - 4.750 in Long - Broached - Chromoly - Black Oxide Stainless Steel Fittings Select proper thread size forProduct Description: Stud 12 mm x 1. 75 Thread 4. 75 in Long Broached Chromoly Black Oxide Universal Sold Individually Since 1968, ARP is the fastener of champions and the world leader in fastener technology.