ARP Main Stud & Nut Kit for Toyota A90 GR Supra / BMW Z4 M40i 3.0T B58 203-5409

ARP Main Studs and Bolts, available in the UK from Tuning Developments.

ARP started applying technology to race fastener design and manufacturing in 1968. Today ARP is the industry standard for performance fasteners and used over the globe in various projects. ARP’s product line contains of thousands of part numbers, and has expanded to include virtually every fastener found in an engine and driveline. These range from quality high performance OEM replacement parts to exotic specialty hardware for Formula 1, IndyCar, NASCAR and NHRA drag racing and marine applications.

Tuning Developments carry a large stock of ARP Head Studs and Head Bolts on the shelf in the UK, available for next day delivery in most cases. Tuning Developments can supply the entire ARP catalogue, so if you cannot see what you need listed online, either give us a call on or alternatively send an email to [email protected] and our experienced sales team will be happy to help.

ARP manufactures fasteners from a wide assortment of materials ranging from popular stainless steel and 8740 chrome moly to exotic alloys that have been developed to handle space travel.

You should also know that there are grades within specific alloys. For example, 8740 is available in four grades:

1. SDF (guaranteed seamless and defect free).
2. CHQ (cold head quality).
3. Aircraft.
4. Commercial

ARP uses only the first two (SDF and CHQ) for its products, even though they cost more than double “Aircraft” quality.

Tuning Developments list a wide selection of ARP Head Studs and Head Bolts, however to view the full ARP Catalogue please click here to be redirected.

For more information on ARP Head Studs and Bolts, please click here to be redirected to the main ARP-Bolts website.

ARP Main Stud Kit 203-5409 to suit:

Toyota A90 Supra GR B58 Engines
BMW M140i M240i 340i B58 Engines

BMW Z4 M40i 3.0 B58 Engines

Please note picture is for illustration purposes only.