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ARP (Automotive Racing Products) makes the strongest fasteners in motorsport — head studs, main studs, rod bolts, and flexplate bolts used by every Formula 1, NHRA, NASCAR, and championship motorsport program. Aerospace-grade alloys, exact-fit machining.
When every detail matters in your engine build, choose the reliability of ARP M10 x 1.25 x 30mm 12pt Black Oxide bolts. These fasteners are specifically designed for applications requiring a fine thread pitch, ensuring a secure fit for critical components. The 12-point head design is a favorite among professional engine builders, as it allows for easier access in confined spaces and provides a more secure engagement for your socket, reducing the risk of rounding off bolt heads during high-torque tightening.
These bolts are an excellent choice for mounting engine accessories, timing covers, or oil pans where fine-thread hardware is specified. By replacing weak OEM bolts with these high-performance ARP units, you gain peace of mind knowing your components are secured by the best in the industry. The black oxide finish provides a professional, understated look that complements any high-end engine bay. Whether you are a weekend warrior or a professional fabricator, you can find the right hardware solutions for your project at GGCRACING.
| Brand | ARP |
|---|---|
| Manufacturer part number | 673-1003 |
| GGC SKU | ARP673-1003 |
| UPC / GTIN | 672036025823 |
Use the manufacturer part number when you compare with other listings or ask us to confirm a match.
| Box size | 23.8 × 6 × 0.45 in |
|---|---|
| Shipping weight | 0.37 lb |
Universal fit — check measurements. Compare the dimensions and specifications on this page with your application before you order.
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