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ARP's Main Studs offer a few advantages over both OEM and main bolts
Commodore W427
The actuator has a high temp silicone Nomex-reinforced diaphragm for long life
Basic Specifications: Nominal Flow Rate – 1335cc/min @ 3
Torque Specs 65 ft lbs - 7/16"
ARP Head Studs for B18A1 Honda Engines Fabrication ARP's Main Studs offer aObtaining the optimum cylinder head to block sealing is especially critical in small displacement engines employing high compression pistons or power adders like turbochargers, nitrous oxide and superchargers. That's why ARP Head Studs are popular among leading Sport Compact Import racers. Socket Size(s) 1 2 12pt, 3 16 Allen Part # 208 4302 Application: Honda B18A1 12pt