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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.
The ARP M12 x 1.75 x 4.91 U/C stud is a critical component for any serious engine build. Designed to handle the rigors of high-performance driving, these studs offer unmatched clamping force compared to standard factory bolts. ARP's commitment to metallurgy and manufacturing precision ensures that every stud meets the highest quality standards for your engine.
This stud is perfect for builders looking to secure cylinder heads or other critical engine components where vibration and pressure are constant threats. By utilizing ARP, you are investing in the longevity of your engine, ensuring that your gasket seal remains intact even under the most demanding conditions. Whether you are working on a track-day car or a high-horsepower street machine, these studs provide the structural foundation required for success. Experience the difference that professional-grade hardware makes in your next build. For all your high-performance engine component needs, trust the experts at GGCRACING.
| Brand | ARP |
|---|---|
| Manufacturer part number | AU4.900-1LUB |
| GGC SKU | ARPAU4.900-1LUB |
Use the manufacturer part number when you compare with other listings or ask us to confirm a match.
| Box size | 4.9 × 0.5 × 0.5 in |
|---|---|
| Shipping weight | 0.21 lb |
Universal fit — check measurements. Compare the dimensions and specifications on this page with your application before you order.
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