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Part Number: AF201-04
- Most accurate way to trigger your electronic fuel injection (EFI)
Manufactured from aircraft quality 8740 high tensile strength chromoly steel and cold-forged to ensure molecular integrity within the stud
Manufacturer's Part Number: 12325030
Rover 4.0L & 4.6L V8 Main Stud Kit (157-5401) Aeromotive Part Number: AF201-04Rover 4. 0L & 4. 6L V8 main stud kit (157 5401) ARP Main Stud Kits 157 5401 ARP main stud kits help eliminate main cap walk fretting and protect the threads in your engine block. They include studs made from 8740 chromoly steel and heat treated in house to 190,000 psi tensile strength rating. The precision J form threads are rolled after heat treat for much stronger threads than the competition. Kits come complete with hardened parallel ground washers
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