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Male NPT to Adapter 1/4" to -8AN with 1/8" Port
Dyno testing resulted with gains of 27 horsepower and 28 ft-lbs
Supertech Spring Kit Conical Springs BMW N54 Steel Retainers
UPC: 793348543567Please note: This is a special order item by Stealth Ride
0L L4 F/I - All
ARP AMC 401 w/Indy cylinder head head bolt kit 114-3603 3 2nd Gen Male NPT to Adapter 1/4"ARP AMC 401 w Indy cylinder head head bolt kit (114 3603) ARP High Performance Series Cylinder Head Bolt Kits 114 3603 ARP High Performance Series head bolt kits are tough. They are rated at 180,000 psi 15 percent stronger than Grade 8 fasteners. They come available with a reduced wrenching hex head or 12 point head that help eliminate the need for valvetrain removal when re torqueing cylinder heads. Brand: ARP Manufacturer's Part Number: 114 3603