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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.
Achieve precise alignment and superior clamping force with Auto Racing Products 3/8 ID insert washers. These specialized washers are designed specifically for cylinder head applications, featuring an insert diameter that ensures your head bolts are perfectly centered. By eliminating bolt movement, these washers help maintain consistent head gasket sealing under high-boost or high-compression conditions.
Constructed from heavy-duty chromoly steel, these washers are built to handle the extreme torque requirements of high-performance racing engines. The black oxide finish provides excellent wear resistance and protection against the harsh environment of the engine block. Using the correct insert washers is vital for preventing bolt head damage and ensuring the longevity of your cylinder head assembly. Don't leave your engine's performance to chance—invest in the best hardware available for your build. Trust the experts at GGCRACING for all your specialized racing fastener requirements.
| Brand | Auto Racing Products |
|---|---|
| Manufacturer part number | 200-8572 |
| GGC SKU | BQDN_200-8572 |
| UPC / GTIN | 672036006815 |
Use the manufacturer part number when you compare with other listings or ask us to confirm a match.
| Box size | 6 × 4 × 1 in |
|---|---|
| Shipping weight | 0.15 lb |
Vehicle fitment is not listed for this part. Send us your year, make and model at sales@ggcracing.com and we will confirm before you order.
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