Engine Kits

ARP Main Stud Kits, Ford 4 and 6 Cylinder

ARP Ford 4 and 6 Cylinder Main Stud Kits, There are many important reasons to use ARP Main Stud Kits, for Ford 4 and 6 Cylinder's including the elimination of main cap walk and fretting, as well as protecting the threads in your engine block. The ARP Main Stud Kits, For Ford 4 and 6 Cylinder are manufactured in ARP's own factory using the best materials, processes, designs and engineering. 

Every ARP main stud kit exceeds the most stringent aerospace specifications. All kits come complete with hardened parallel-ground washers and aerospace quality nuts. Parallel-ground, hardened washers are included with each ARP Ford 4 and 6 Cylinder Main Stud Kit.


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 ARP Ford 4 and 6 Cylinder Main Stud Kits are manufactured from 8740 chrome moly steel, heat-treated in-house to 200,000 psi tensile strength, and precision J-form threads rolled after heat-treat to create a fastener that has threads 1000% stronger than others.

Don’t settle for anything less than the best.
Insist on genuine ARP studs – you’ll find the ARP name stamped right on the end!

Tech Tips for Main and Head bolts installation by ARP Automotive Products


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.

This product is in the following categories:

HomeBolt Kits, Studs, FastenersMain Studs and Main Bolts


ARP Bolts

Part #: 151-5401

Ford 4-cylinder 2000cc Pinto, 2 bolt main, ARP Main Studs 151-5401
Price: $105.93

Part #: 151-5402

Ford 4-cylinder 2300cc Pinto, 2 bolt main, ARP Main Studs 151-5402
Price: $108.09

Part #: 151-5403

Ford 4-cylinder 1600cc Escort, 2 bolt main, ARP Main Studs 151-5403
Price: $105.93

Part #: 151-5404

Ford 4-cylinder 2.0L Zetec (1998 and later), 2 bolt main, ARP Main Studs 151-5404
Price: $82.77

Part #: 151-5405

Ford 4-cylinder 2.3L Duratec (2003 & later), 2 bolt main, ARP Main Studs 151-5405
Price: $105.75

Part #: 151-5406

Ford 4-cylinder 2.0L Zetec (1997 & earlier), 2 bolt main, ARP Main Studs 151-5406
Price: $79.26

Part #: 152-5401

Ford 6-cylinder 240-300 cid inline 6, 2 bolt main, ARP Main Studs 152-5401
Price: $75.47

Part #: 253-5401

Ford 6-cylinder 4.5L SVO inline valve V6, 2 bolt main, ARP Main Studs 253-5401
Price: $98.18