What is the main benefit of using ARP main studs over stock bolts?

ARP main studs are made from a stronger, heat-treated aerospace alloy and feature rolled threads, making them significantly stronger and more resistant to fatigue than stock bolts. This provides a more secure clamping force for your crankshaft, especially important in performance applications.

What materials are included in this kit?

This kit includes the ARP main studs, along with the necessary nuts and washers required for installation. You will need to supply your own thread sealer.

Are these studs suitable for a stock engine rebuild?

Yes, these studs are a solid option for any engine rebuild, including stock applications where increased reliability is desired. They offer a stronger foundation than the original hardware, ensuring the crankshaft stays properly secured.

ARP VW Water Cooled Main Stud Kit 204-5402

Name: ARP VW Water Cooled Main Stud Kit
Brand: ARP
SKU: arp-arp-vw-water-cooled-main-stud-kit-t14-15777
Price: 154.21 USD
Availability: InStock

ARP VW Water Cooled Main Stud Kit

$154.21

Only 6 left in stock

ARP VW Water Cooled Main Stud Kit 204-5402. Strong, well-built main studs for water-cooled VW engines.

Key Features

Fits water-cooled Volkswagen engines.
ARP main stud kit for engine rebuilding.
Constructed from high-strength aerospace alloy.
Heat-treated for improved strength and durability.
Rolled threads offer about 1000% greater fatigue resistance than ground threads.
Designed for a direct fit in factory main cap locations.

This ARP main stud kit is designed for water-cooled Volkswagen engines. Please verify compatibility with your specific vehicle model and year.

⚠️ 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

This is the ARP Main Stud Kit for water-cooled Volkswagen engines, part number 204-5402. If you're rebuilding the bottom end of your water-cooled VW, especially if you're aiming for increased performance or just want the most solid foundation possible, these main studs are a smart choice. They replace the weaker factory bolts, offering a much stronger clamping force to keep your crankshaft securely in place under demanding conditions.

ARP uses high-strength aerospace alloy for these studs, which is heat-treated to ensure it can handle the stresses of a performance engine. They're also rolled after heat-treating, which makes them about 1000% stronger than bolts that are ground after heat-treating. This process creates a more durable stud with better fatigue resistance. The threads are precisely machined for a good fit with the nuts and washers, and the studs are designed to fit right into the factory main cap locations.

When you're putting a performance engine back together, using ARP main studs is a common practice. They provide a reliable way to ensure your crankshaft stays where it should, reducing the risk of main bearing cap walk or other issues that can arise from insufficient clamping force. Make sure to follow ARP's recommended torque specifications and use their thread sealer for a proper installation.