SKU: 200-8534 | UPC: 672036006587
ARP 1/2in ID 7/8in OD Black Washers (Pack of 10)
ARP black oxide washers measure 1/2 inch inside diameter by 7/8 inch outside diameter and come in packs of 10 for use with ARP bolts in performance engines. These washers distribute load evenly to prevent galling and ensure secure fastening during high-stress operation. Engine builders rely on them for head studs main caps and connecting rods across domestic V8 platforms.
Key Features
- Exact Sizing: 1/2in ID x 7/8in OD fits precisely over 1/2in ARP bolts for flush seating and even pressure distribution
- Black Oxide Finish: Resists corrosion in harsh engine environments while maintaining a professional low-gloss appearance
- High-Strength Steel: Forged from premium alloy steel to withstand extreme torque and heat cycles without deforming
- Matched Set Quantity: Pack of 10 provides exact count needed for most ARP rod bolt or main stud kits
- Universal ARP Compatibility: Works seamlessly with ARP Pro Series and 2000 Series fasteners in racing and street builds
Product Notes
- Inspect washers for damage before use and pair with matching ARP nuts or bolts
- Keep in original packaging away from moisture to preserve oxide coating integrity
- Lightweight at 0.05 lbs total weight for easy handling and minimal shipping costs
Installation Notes
- Professional installation recommended.
- Apply ARP Ultra-Torque lubricant to threads and under washer faces for accurate preload
- Compatible with all 1/2in ARP bolts nuts and standard engine hardware patterns
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| Universal | Chevrolet | Small Block V8 | All |
| Universal | Chevrolet | Big Block V8 | All |
| Universal | Ford | Windsor V8 | All |
| Universal | Ford | Cleveland V8 | All |
| Universal | Chrysler | LA V8 | All |
| Universal | Chrysler | RB V8 | All |
Why Choose ARP?
- ARP sets the standard for racing fasteners used in NHRA Top Fuel and Pro Stock
- Every washer undergoes rigorous quality control for consistent performance
- Precision manufacturing ensures repeatability in critical engine assemblies
Frequently Asked Questions
- Q: Will these washers fit my ARP head stud kit?
A: Yes they match 1/2in ARP bolts in most head stud main stud and rod bolt kits for GM Ford and Mopar V8 engines - Q: What material and finish do these washers have?
A: Constructed from high-strength alloy steel with black oxide finish for corrosion resistance and smooth mating surfaces - Q: What is the ARP warranty on these washers?
A: ARP provides a one-year warranty against breakage in normal service when installed and torqued per specifications
Shipping & Handling
- Method: UPS Ground or USPS First Class
- Availability: In stock – ships same or next business day
- Packaging: Secure poly bag inside 6in x 4in x 0.25in protective envelope
- Weight: 0.05 lbs
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