ARP BMW M50 / M52 S50US/S52US 2-Bolt Main Stud Kit
Whether it is a complete rebuild or standard maintenance, you need the right engine components for your vehicle to run smoothly.
It is said that to be successful, you must identify a need and fulfill it. In the early 1970s, racing enthusiast Gary Holzapfel noticed that many of his friends' broken engines were caused by fastener failure. At the time, there were no commercially available studs or bolts that could handle this challenge. So, utilizing his years of experience manufacturing fasteners for leading aerospace industry subcontractors, Holzapfel founded ARP (Automotive Racing Products). In the years since, the company has grown from what was literally a backyard garage workshop into a highly diversified manufacturer with seven entities in Southern California totaling over 200,000 square feet. These include forging, heat-treating, machining, quality control finishing, and packaging/warehousing facilities in Santa Paula and Ventura, California.
- 2000 BMW 323Ci Base
- 1999 BMW 323i Base
- 2000 BMW 323i Base
- 1998 BMW 323i Base
- 1998 BMW 323is Base
- 1999 BMW 323is Base
- 1992 BMW 325i Base
- 1992 BMW 325is Base
- 2000 BMW 328Ci Base
- 1996 BMW 328i Base
- 1997 BMW 328i Base
- 1998 BMW 328i Base
- 1999 BMW 328i Base
- 2000 BMW 328i Base
- 1996 BMW 328is Base
- 1997 BMW 328is Base
- 1998 BMW 328is Base
- 1999 BMW 328is Base
- 1991 BMW 525i Base
- 1992 BMW 525i Base
- 1993 BMW 525i Base
- 1994 BMW 525i Base
- 1995 BMW 525i Base
- 1997 BMW 528i Base
- 1998 BMW 528i Base
- 1995 BMW M3 Base
- 1995 BMW M3 Lightweight
- 1996 BMW M3 Base
- 1997 BMW M3 Base
- 1998 BMW M3 Base
- 1999 BMW M3 Base
- 1997 BMW Z3 Roadster
- 1998 BMW Z3 M Roadster (Door, HP Cylinder L, Speed)
- 1998 BMW Z3 Roadster
- 1999 BMW Z3 M Coupe (Door, HP Cylinder L, Speed)
- 1999 BMW Z3 M Roadster (Door, HP Cylinder L, Speed)
- 1999 BMW Z3 Roadster
- 2000 BMW Z3 M Coupe (Door, HP Cylinder L, Speed)
- 2000 BMW Z3 M Roadster (Door, HP Cylinder L, Speed)
- 2000 BMW Z3 Roadster
- 1993 BMW 525iT Base
Before Ordering
○ Regarding Import Consumption Tax
At Shaftoya Shopping Site, we pay the import consumption tax incurred at the time of import on your behalf, so there will be no additional charges beyond the total amount paid at checkout.
○ Confirming Fitment
Our entire product database is based on North American specification vehicles (USDM). Please confirm whether or not these products can be installed on Japanese specification vehicles (JDM) before placing your order. (If you are unsure if a listed product fits your vehicle, please feel free to contact us. Our support team will be happy to check for you.)
If you order without verifying fitment, we cannot accept returns due to incompatibility.
Please note that even if products are sorted by selecting the year, manufacturer, and vehicle model via the tabs on our top page, this does not necessarily mean they will fit Japanese model vehicles without modification.
All products have been translated into Japanese using translation software. As there may be confusing expressions, please contact us before ordering if you have any questions.
○ Regarding Shipping
Shipping costs are paid at the time of payment. Shipping estimates are calculated automatically when you enter your shipping address on the checkout page. For large items such as body parts, there may occasionally be a significant discrepancy between the automatically calculated shipping cost and the actual shipping cost. In such cases, we will contact you individually via email.
All products are generally shipped internationally from our U.S. warehouse. Unlike domestic shipping in Japan, international shipping takes approximately 7 to 14 days, so please allow yourself enough time when ordering. If you are in a hurry, please contact us in advance to check delivery times. Note that all products are transported by air; they are not shipped by sea.
○ Regarding Japanese Vehicle Inspection (Shaken) Compliance
All products handled by our company are fundamentally designed and manufactured outside of Japan. Please be aware that they do not comply with the "Japanese Vehicle Inspection System," and we cannot provide documents such as strength calculation reports for the Japanese inspection system. Therefore, all parts are sold for use on "circuits, private property, or off-road," and installation and use are at your own risk.
○ Regarding Warranty
Please check the contents immediately upon arrival. Since all products are shipped internationally from outside Japan, there may be shipping damage to the packaging box or the product itself. Please understand that we will only provide returns, refunds, or replacements for products with shipping damage, defective products, or incorrect items if you contact us within 7 days of receipt. Furthermore, for products sold through us, warranty-related support will be provided "only through our company." Please note that we do not handle support through other companies or distributors located in Japan.