2018 ARP Catalog

58 800-826-3045 Red part numbers indicate new items MAIN STUDS Application 2-Bolt 4-Bolt ACURA - SEE HONDA/ACURA, PAGE 60 AUDI - SEE VOLKSWAGEN, PAGE 61 BMC/TRIUMPH A Series 206-5401 B Series (3 cap main) 206-5402 B Series (3 cap main) 206-5402 B Series (5 cap main) 206-5403 2.0L SOHC TR7 206-5404 Austin Healey 6-cylinder 206-5405 BMW 1.5L-2.0L (M10) & 2.3L (S14) 4-cylinder 201-5001 2.5L (M50), 2.8L (M52), 3.0L (S50US) & 3.2L (S52US) inline 6 201-5000 3.2L (S54) inline 6 201-5002 BUICK V6 Stage I & II 123-5401 V6 Stage II without windage tray 222-5602 V6 Stage II with splayed cap bolts 322-5802 215 cid aluminum V8 124-5401 350 cid 124-5402 Application 2-Bolt 4-Bolt BUICK (CONTINUED) 401 cid (nail head) 124-5404 400-430-455 cid (hex) 125-5401 400-430-455 cid (12 pt nuts) 125-5402 CADILLAC 472-500 cid 135-5507 CHEVROLET, SMALL BLOCK 400 cid with windage tray 234-5606 400 cid with windage tray & splayed cap bolts 234-5605 400 cid with windage tray & 3.0˝ outer studs 234-5607 Large journal (hex) 134-5401 134-5601 Large journal (12 pt nuts) 134-5403 Large journal with aftermarket (4-6 bolt) wind- age tray 3.25-3.48” stroke 234-5501 234-5601 Large journal with aftermarket (4-6 bolt) wind- age tray 3.50-4.00” stroke 234-5610 Large journal with splayed cap bolts 234-5602 Large journal with straps (F & R caps) 234-5503 234-5603 Large journal with straps & splayed cap bolts 234-5604 LT-1/LT-4 with factory windage tray (1992-97) 134-5502 Small journal 134-5402 There are many important reasons to use ARP main stud kits, including the elimination of main cap walk and fretting, as well as protecting the threads in your engine block. All kits come complete with hardened parallel-ground washers and high quality nuts. Some applications have provisions for mounting windage trays and have specially designed standoff studs with serrated lock nuts to position the windage tray and lock it securely in place. The studs are manufactured from 8740 chrome moly steel, heat-treated in-house to 190,000 psi tensile strength, and precision J-form threads rolled after heat-treat to create a fastener that has threads 2000% stronger than others. MAIN STUDS STUDS vs. BOLTS ARP recommends the use of main studs over bolts whenever possible for several key reasons. First is the ability to obtain more accurate torque readings because studs don’t “twist” into the block. All clamping forces are on one axis. By the same token, there is less force exerted on the block threads, which contributes to improved block life (very critical on aluminum blocks). Finally, there are factors of easier engine assembly and proper alignment of caps every time.

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