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Engines and Components› Cylinder Heads and Components

ARP Main

8740 Chromoly Steel Main Stud Kit

$73.44 $55.75 Save $17.69

SKU: 154-5401

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Overview

The ARP 154-5401 is a main stud kit designed to eliminate main cap walk and fretting, while protecting the threads in your engine block. These studs are constructed from 8740 chromoly steel and are heat-treated to a tensile strength of 190,000 psi.
Show original supplier description
Constructed from robust 8740 chromoly steel, these studs undergo in-house heat treatment to achieve a formidable 190,000 psi tensile strength rating. The precision J-form threads are rolled after heat-treatment, ensuring superior thread strength compared to conventional methods. This main stud kit is designed for a variety of Ford applications, specifically fitting 2-bolt main configurations. The applications list includes numerous Ford models such as the Fairlane, Falcon, Mustang, Galaxie, E-series, Torino, F-Series, Bronco, Maverick, Ranchero, Granada, Thunderbird, LTD II, Fairmont, LTD Crown Victoria, and Explorer. Additionally, it is compatible with various Mercury models like the Cyclone, Montego, Colony Park, Comet, Monarch, Cougar, Capri, Grand Marquis, and Marquis, as well as Lincoln models including Versailles, Continental, Continental Mark VI, Continental Mark VII, Mark VII, and Town Car, and Laforza. The kit does not work with windage trays. It includes 10 studs, washers, and nuts. It comes with a manufacturer's standard warranty.
Vehicle Symptoms
  • Loud knocking or tapping from the bottom end
  • Excessive main cap movement during rebuild
  • Engine vibration at high RPM
  • Oil pressure fluctuations or loss
  • Premature bearing failure after rebuild
Relevant Conversations
  • ARP main stud kit for small block Ford 302
  • Symptoms of main cap walk in high HP engine
  • How to fix bottom end knocking noise after rebuild
  • ARP 154-5401 vs stock main bolts
  • Best main studs for 700+ hp small block Ford
  • Main stud install tips: torque specs and thread prep
  • Difference between main studs and main bolts
  • ARP chrome moly main stud kit review 289 302
  • Why use main studs instead of bolts for racing
  • Engine vibration after rebuild? Check main bearing caps

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

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Specifications

BrandARP Main
Part Number154-5401
CategoryEngines and Components
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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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