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ARP 123-5401 Main Cap Stud Kit Chrome Moly - 2-Bolt

(1975-1979, 1983-1987 Buick Regal; 1976-1977, 1986-1988 Buick LeSabre; 1975-1977, 1979, 1984-1988 Buick Century + 4 more models)

Part of: ARP Main Cap Stud Kit Chrome Moly

Other options in this family: ARP 234-5608 ARP 203-5405 ARP 156-5401 ARP 145-5404 ARP 202-5406

Manufacturer

Picture for manufacturer ARP

Part Number

123-5401
14 reviews
Sale Price

$77.97

1 left at this price

delivery box

Usually delivered within 2 days

free shipping

FREE SHIPPING

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No Hassle Returns

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Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The ARP 123-5401 Main Cap Stud Kit is engineered for 2-bolt main applications where reliability and precision matter. This complete fastener system eliminates main cap walk and fretting while protecting engine block threads from damage during high-stress operation.

Key Features:

  • Manufactured from premium 8740 chrome moly steel for maximum strength
  • Heat-treated in-house to 200,000 psi tensile strength
  • Precision J-form threads rolled after heat-treat for 1000% stronger threads than conventional fasteners
  • Includes hardened parallel-ground washers and high-quality nuts
  • Complete kit with all necessary components for installation
  • Designed for 2-bolt main cap configurations

ARP's post-heat-treat thread rolling process creates fasteners with significantly longer fatigue life compared to studs threaded before heat-treating. The generous under-head radius design and precision manufacturing ensure consistent clamping force and exceptional reliability in demanding engine applications. Whether you're building a performance street engine or a full competition powerplant, this main stud kit provides the security and precision that professional engine builders demand.

Products specifications

Fits

1975-1979, 1983-1987 Buick Regal; 1976-1977, 1986-1988 Buick LeSabre; 1975-1977, 1979, 1984-1988 Buick Century; 1975-1977 Buick Skylark; 1983-1985, 1987 Buick Riviera; 1985, 1987 Buick Electra; 1975-1978 Buick Skyhawk

Fastener Nut Style

Standard hex

Fastener Style

Stud

Fastener Yield Strength (psi)

200,000 psi

Main Bolt Style

2-bolt

Nuts Included

Yes

Quantity

Sold as a kit.

Washers Included

Yes

Works with Windage Tray

No

Great price, shipping slower then expected but only by a few days.

Great pricing and easy checkout

Receive the item very quickly but I had problems with vehicle and was not able to use merchandise so I am going to return for refund

First experience with Autoplicity.com was great. After waiting for 3 months on backorder for the rackcompetition to not be able to fill my order I found Autoplicity. They had my tire size/brand in stock, ready to ship, and at a better price. A++++

Website was easy to navigate and gave good details about the product with an appreciated option to do a vehicle fit varificayion before buying. Unfortunately the part I was buying increase in price $14 between the time I started looking and the time I bought. Oh well - snooze you loose.

okay

na

Thank you!

Autoplicity has great prices and customer service. Shipping is fairly fast too. Ordered product on Monday and it was shipped on Wednesday. Will make future purchases with this company.

Very pleased with the service and quick shipping. Checked out through Amazon payments without any issues. Item ordred was the Hella Supertone Horns. Arrived in original box and packaging. Will not hesitate to order from Autoplicity in the future.

Great prices very fast shipping!!!

Autoplicity had the lowest price online for the product I needed. I will definitely buy from them again.

A very good price on items. Very quick response and delivery. Thanks

Autoplicity created a great shopping experience. It was very easy to find the parts I needed for the vehicle I needed. I will definitely use Autoplicity again!

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