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Engines and Components› Cylinder Heads and Components

ARP

2-Bolt Main Stud Kit

Name: 2-Bolt Main Stud Kit
Brand: ARP
SKU: ARP-194-5401

$95.95 $86.99 Save $8.96

SKU: ARP-194-5401

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Overview

The ARP Pontiac 2-Bolt Main Stud Kit is a high-performance engine fastener kit designed for Pontiac 400, 421, 428, and 455 cubic inch engines. It is constructed from chromoly material with a black oxide finish. This kit includes nuts and washers, and features a tensile strength of 190,000 psi.

Show original supplier description

The ARP Pontiac 2-Bolt Main Stud Kit is engineered to provide superior clamping force for the main bearing caps in your Pontiac V8 engine. Designed specifically for 400, 421, 428, and 455 cubic inch displacements, this kit ensures reliable performance for high-horsepower applications. Constructed from durable chromoly steel with a black oxide finish for corrosion resistance, these studs offer a tensile strength of 190,000 psi. It features a 9/16-inch thread on one end and a 1/2-inch thread on the other, with a hex head nut style. Installation instructions are available for download, ensuring a correct and secure fit. ARP is a recognized leader in high-performance automotive fasteners, providing robust solutions for engine building and racing needs.

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.

Fitment

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Specifications

Brand	ARP
Part Number	ARP-194-5401
Category	Engines 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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