ARP Toyota 4AG 16V Head Stud Kit
Whether you are performing a complete rebuild or standard maintenance, having the right engine components is essential for your vehicle to run smoothly.
It is said that to be successful, one must identify a need and fulfill it. In the early 1970s, racing enthusiast Gary Holzapfel noticed that many of his friends' blown 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 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.
- 1985 Toyota MR2 GT
- 1986 Toyota MR2 GT
- 1987 Toyota MR2 GT
- 1988 Toyota MR2 GT
- 1989 Toyota MR2 GT
- 1988 Toyota MR2 Supercharged
- 1989 Toyota MR2 Supercharged
Before Ordering
〇Regarding Import Consumption Tax
At Shaftoya Shopping Site, we pay the import consumption tax incurred upon import on your behalf, so there will be no additional charges other than the total amount paid at checkout.
〇Confirming Fitment
Our entire product database is based on North American vehicles (USDM). Please confirm whether parts can be installed on Japanese 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 look it up for you.)
If you place an order without confirming fitment, we cannot accept returns due to incompatibility.
Please note that even if items are sorted by selecting the year, make, and vehicle model using the tabs on our home 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. Estimates for shipping costs are automatically calculated once 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.
Essentially, all products are shipped internationally from our U.S. warehouse. Unlike domestic shipping in Japan, international shipping takes about 7 to 14 days, so please allow yourself plenty of 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 freight. They are not shipped by sea.
○Regarding Compliance with Japanese Vehicle Inspection (Shaken)
All products we handle are essentially designed and manufactured outside of Japan. Please note that they are not compliant with the "Japanese Vehicle Inspection (Shaken) System," 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 please install and use them at your own risk.
○Regarding Warranty
Please check the contents immediately upon arrival. As all products are shipped internationally from outside Japan, there may be shipping damage to the packing boxes or the products themselves. Please understand that we will only provide returns, refunds, or replacements for products with shipping damage, defective goods, or items different from those ordered if you contact us within 7 days of receipt. Furthermore, regarding products sold through our company, all warranty-related support will be handled "exclusively through our company." Please note that we do not handle support through other companies or distributors located in Japan.