ARP Mitsubishi 4G63 M12 Head Stud Kit
Whether it’s a complete rebuild or standard maintenance, you need the right engine components to keep your vehicle running smoothly.
It is said that to succeed, 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 off-the-shelf studs or bolts that could address this challenge. So, utilizing his years of experience manufacturing fasteners for a major aerospace subcontractor, Holzapfel founded ARP (Automotive Racing Products). In the years that followed, the company grew from what was literally a backyard garage operation 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.
- 1990 Eagle Talon TSi
- 1991 Eagle Talon TSi
- 1992 Eagle Talon TSi
- 1993 Eagle Talon TSi
- 1994 Eagle Talon TSi
- 1990 Plymouth Laser RS
- 1991 Plymouth Laser RS
- 1992 Plymouth Laser RS
- 1993 Plymouth Laser RS
- 1994 Plymouth Laser RS
- 1990 Mitsubishi Eclipse GS
- 1990 Mitsubishi Eclipse GSX
- 1991 Mitsubishi Eclipse GS
- 1991 Mitsubishi Eclipse GSX
- 1992 Mitsubishi Eclipse GS
- 1992 Mitsubishi Eclipse GSX
- 1993 Mitsubishi Eclipse GS
- 1993 Mitsubishi Eclipse GSX
- 1994 Mitsubishi Eclipse GS
- 1994 Mitsubishi Eclipse GSX
Before You Order
〇 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 are no additional charges beyond the total amount paid at checkout.
〇Checking Compatibility
All product databases are based on North American vehicles (USDM). Please verify whether or not the product can be installed on Japanese vehicles (JDM) before ordering. (If you are unsure if a listed product is compatible with your vehicle, please feel free to contact us. Our support team will be happy to look into it for you.)
If you place an order without confirming compatibility, we cannot accept returns due to incompatibility.
Please note that even if items are sorted by selecting the year, manufacturer, and vehicle model using the tabs on our top page, this does not necessarily mean they will fit Japanese models without modification.
All products have been translated into Japanese using translation software. There may be confusing expressions, so please contact us if you have any questions before ordering.
○ Regarding Shipping
Shipping costs are paid at the time of payment. For shipping cost estimates, these are automatically calculated when you enter your shipping address on the checkout page. For large items such as body parts, there are rare cases where the automatically calculated shipping fee differs significantly from the actual cost. In such cases, we will contact you individually via email.
Essentially, all products are shipped internationally from our US warehouse. Unlike domestic shipping in Japan, international shipping takes about 7 to 14 days, so please allow yourself enough time when ordering. If you are in a hurry, please contact us in advance to confirm delivery times. Note that all products are transported by air. They are not shipped by sea freight.
○ Regarding Japanese Vehicle Inspection (Shaken) Compatibility
All products we handle are essentially designed and manufactured outside of Japan. Please note that they are not compliant with "Japanese vehicle inspection (Shaken) standards," and we cannot provide strength calculation documents or similar paperwork for the Japanese inspection system. Therefore, all parts are sold for the purpose of "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 handle returns, refunds, or exchanges for shipping-damaged items, defective products, or items different from what was ordered if you contact us within 7 days of receipt. Furthermore, for products sold through us, all warranty-related support will be handled "exclusively through us." Please note that we do not handle support through other companies or distributors located in Japan.