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Ships within 48 hours · Estimated delivery Aug 12 - Aug 17
74mm bore size
Center Cap (sold separately)
1 x1/8" NPT to -4AN
165" diameter intake valves and 1
Overall Width: 55mm
ARP fasteners Single Head / Main Stud ARAR5.250-1LB Product:1/2" Thread X 5.250" OAL 74mm bore sizeSingle Head Main Stud1 2" Thread X 5. 250" OAL Brand: ARP Part Number: ARAR5. 250 1LB Description: It is for good reason that virtually every top professional engine builder relies on ARP Pro Series head studs for their all out competition powerplants. Simply stated, there's not a better stud setup on the market today. For openers, ARP only uses premium grade 8740 alloy and a proprietary ARP2000 alloy that are rated far superior to "aircraft" quality
