SKU: 200-8535 | UPC: 672036006594
ARP 9/16in ID 1.00in OD Black Washers (Pack of 10) for Chevy Big Block and Ford 429/460
These ARP black anodized washers feature precise 9/16in inner diameter and 1.00in outer diameter for secure fit on 9/16in ARP main studs and bolts. Designed for high-performance engine assemblies in Chevy Big Block Mark IV/V and Ford 429/460 engines they ensure even load distribution and lasting performance under extreme heat and stress. Pack of 10 provides exact replacements or additions for stud kits.
Key Features
- Hard Anodized Aluminum Construction: 2024-T6 aluminum offers lightweight strength and superior corrosion resistance for long-term engine reliability
- Exact Dimensions: 9/16in ID x 1.00in OD matches ARP 9/16in fasteners perfectly preventing slippage and ensuring uniform clamping
- Black Anodized Finish: Durable black oxide coating resists wear and provides clean professional appearance in engine bays
- High Clamp Load Retention: Engineered to maintain tension through heat cycles in street strip and track use
- Pack of 10: Convenient quantity for complete main stud kits or spare hardware in performance builds
Product Notes
- Inspect washers for flatness before installation to guarantee optimal performance
- Store in dry environment to preserve anodized finish integrity
- Small lightweight part ships quickly with no hazmat restrictions
Installation Notes
- Professional installation recommended.
- Clean all threads thoroughly and apply ARP Ultra-Torque fastener lubricant as specified
- Torque to ARP or factory specifications in correct sequence recheck after 100 miles or initial heat cycles
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1965-1985 | Chevrolet | Big Block Mark IV | 396 402 427 454 |
| 1991-1998 | Chevrolet | Big Block Gen V | 454 SS |
| 1968-1976 | Ford | F-250 | 429 460 |
| 1977-1997 | Ford | E-350 | 460 |
| Universal | Performance | 9/16in Stud Applications | Main Caps Rod Ends |
Why Choose ARP?
- Proven in NHRA IHRA and NASCAR racing for decades
- Manufactured from premium aerospace-grade materials
- Machined to exact tolerances for repeatable performance
Frequently Asked Questions
- Q: What engines or applications do these washers fit?
A: Designed for 9/16in ARP main studs and bolts in Chevy Big Block 396-454 Mark IV/V and Ford 429/460 V8 engines plus other performance builds requiring precise washer sizing - Q: What material and finish are used?
A: Made from 2024-T6 hard anodized aluminum with black oxide finish for strength corrosion resistance and heat tolerance up to 500F - Q: What is the warranty and installation support?
A: Backed by ARP limited warranty includes torque specs and lube recommendations use ARP Ultra-Torque for best results
Shipping & Handling
- Method: UPS Ground or USPS Priority
- Availability: In stock – ships same or next business day
- Packaging: Compact poly bag in protective box 3.8 x 3.7 x 0.7 inches
- Weight: 0.05 lbs net 0.1 lbs shipping
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