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LT1 OptiSpark II
Strong and rugged
Premium quality Nomex® and premium leather are used along with a reinforced leather palm
1989-1991 Isuzu Trooper
ARP High Performance Series Main Stud Kit - Ford 351W w/o Windage Tray 29701510 LT1 OptiSpark IIARP High Performance Series Main Studs eliminate main cap walk and protect the treads in cylinder block. ARPs product line contains thousands of part numbers, and has expanded to include virtually every fastener found in an engine and driveline. These range from quality high performance OEM replacement parts to exotic specialty hardware for Formula 1, IndyCar, IMSA, NASCAR and NHRA drag racing and marine applications. Since 1968, ARP is the fastener
