Why use main studs instead of the stock bolts for my 2.5L V6?

Main studs offer a more consistent and accurate clamping force on the main bearing caps compared to factory bolts. This improved stability is crucial for high-performance engines or when rebuilding for maximum reliability.

What material are these ARP main studs made from?

These studs are manufactured from ARP's proprietary 8740 chromoly steel. This material is well-known for its high tensile strength and durability, making it suitable for demanding engine applications.

Does this kit include everything needed to install the main studs?

Yes, the kit comes complete with the main studs, nuts, and washers required for installation. Always refer to ARP's installation instructions for any additional preparation or specific procedures.

ARP Vauxhall/Opel 2.5L V6 Main Stud Kit 209-5402

Name: ARP Vauxhall/Opel 2.5L V6 Main Stud Kit
Brand: ARP
SKU: arp-arp-vauxhall-opel-2-5l-v6-main-stud-kit-t14-4313779
Price: 210.48 USD
Availability: BackOrder

ARP Vauxhall/Opel 2.5L V6 Main Stud Kit

$210.48

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

ARP Main Stud Kit for Vauxhall/Opel 2.5L V6 engines. Stronger than stock bolts for critical engine builds.

Key Features

Fits Vauxhall/Opel 2.5L V6 engines.
ARP 8740 chromoly steel construction for improved strength.
Studs provide more consistent clamping force than factory bolts.
Essential for performance engine builds and high-stress applications.
Includes necessary nuts and washers.
Designed to ensure proper main bearing cap alignment.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Product Details

When you're rebuilding the bottom end of your Vauxhall/Opel 2.5L V6, especially if you're aiming for more power or just want the most solid foundation possible, the main bearing caps are a critical area. ARP's main stud kit replaces the factory bolts with strong, heat-treated studs, offering a more consistent and reliable clamping force where it matters most.

These studs are made from ARP's proprietary 8740 chromoly steel, which is known for its exceptional strength and durability. Unlike bolts, studs allow you to more easily and accurately torque the main caps down, ensuring the crankshaft has a perfectly stable home. This is especially important if you're increasing compression or adding forced induction. The kit includes the necessary nuts and washers, all made to ARP's well-known standards for precision and strength.

For any performance-oriented rebuild or a restoration where you want the best possible internal engine components, this ARP main stud kit is a solid choice to ensure the longevity and reliability of your 2.5L V6.