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Part number: 155-5501
Competitor Pricing
Product Details
ARP 155-5501 Main Cap Fasteners
Products specifications
Fastener Nut Style Standard hex
Fastener Style Stud
Fastener Yield Strength (psi) 200,000 psi
Main Bolt Style 4-bolt
Nuts Included Yes
Quantity Sold as a kit.
Washers Included Yes
Works with Windage Tray No
Main Stud Kit
2Bolt Main
w/ Windage Tray

Main Studs
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 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.

Main Bolts
Far superior to any other main bolt kit offered for use in competition engines, ARP main bolts are designed to meet the exacting standards and demands of professional engine builders. Forged from 8740 chrome moly, all bolts feature generous under-head radius and rolled threads for the utmost reliability. The threads are rolled after heat-treating, which makes them about 1000% longer fatigue life than most main bolts, which are threaded prior to heat-treating. Available in the popular High Performance Series, which, at a nominal rating of 180,000 psi, is a premium replacement for OEM fasteners, or the 200,000 psi nominal rated Pro Series, application-specific main bolts with reduced wrenching head and are designed for use in competition applications. Parallel-ground, hardened washers are included with each kit.

Reviews
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L
Not only did they have an great price on my part, and reasonable shipping charges, they shipped it right away.
I know I will be checking them for future parts.
M
Product received as described.  Fast shipping!  I will definitely purchase from Autoplicity again.
R
Prices were good and the order shipped promptly. The email notice of shipment was a little late. It came after the order had arrived.
T
Ordered Weathertech floor liner for wife's truck. Best price and quick delivery.  Will order from Autoplicity.com again.

Happy New Year
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Fitment
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1978 Ford E-100 Econoline ALL
Ford E-150 Econoline
1979 Ford E-150 Econoline ALL
1978 Ford E-150 Econoline ALL
1977 Ford E-150 Econoline ALL
1976 Ford E-150 Econoline ALL
Ford E-250 Econoline
1991 Ford E-250 Econoline ALL
1990 Ford E-250 Econoline ALL
1989 Ford E-250 Econoline ALL
1988 Ford E-250 Econoline ALL
1979 Ford E-250 Econoline ALL
1978 Ford E-250 Econoline ALL
1977 Ford E-250 Econoline ALL
1976 Ford E-250 Econoline ALL
1975 Ford E-250 Econoline ALL
Ford E-350 Econoline
1996 Ford E-350 Econoline ALL
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1991 Ford E-350 Econoline ALL
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1989 Ford E-350 Econoline ALL
1988 Ford E-350 Econoline ALL
1987 Ford E-350 Econoline ALL
1979 Ford E-350 Econoline ALL
1978 Ford E-350 Econoline ALL
1977 Ford E-350 Econoline ALL
1976 Ford E-350 Econoline ALL
1975 Ford E-350 Econoline ALL
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Return Policy
Returns are easy at THMotorsports
Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy