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SKU: 200-8719
ARP Black Oxide 1-PC Bulk SAE Special Purpose Washers .406-.422 ID x 1.000 OD x .125 Thick
ARP Black Oxide 1-PC Bulk SAE Special Purpose Washers provide essential hardware for high-performance engine assemblies. Made for universal use across performance vehicles and custom engine builds these washers ensure secure fastening under extreme loads. Their precise engineering supports connecting rod bolts cylinder head studs and other critical fasteners.
Key Features
- Material: Chrome moly steel with black oxide finish resists corrosion and withstands high stress in racing applications
- Dimensions: Inside diameter .406-.422 inches outside diameter 1.000 inches thickness .125 inches for exact bolt clearance
- Hardening: Heat treated and parallel-ground surfaces deliver flatness and consistent load distribution
- Design: Chamfer options available supports SAE bolts in rod main and head fasteners
- Packaging: Single piece bulk format allows custom inventory for engine builders
Product Notes
- Ideal for stocking multiple sizes to complete engine projects without delay
- Matches ARP fastener series for reliable performance
- Special order processing may add 1-2 days if not in stock
Installation Notes
- Professional installation recommended.
- Torque to ARP specifications with ARP Ultra-Torque lubricant for accurate clamping force.
- Compatible with 3/8-inch SAE bolts and similar high-strength fasteners.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| All Years | Universal | Performance Engines | Engine Hardware |
Why Choose ARP?
- Used in NHRA Top Fuel and Pro Stock racing teams
- 8740 chrome moly alloy exceeds SAE standards
- CNC machined tolerances hold under 200000 psi loads
Frequently Asked Questions
-
Q: What engine applications fit this washer?
A: Universal for performance engine builds including connecting rods mains and heads with matching SAE bolt sizes. -
Q: What is the exact material and finish?
A: Premium chrome moly steel hardened to Rockwell C36-38 with black oxide coating for rust protection and lubricity. -
Q: What warranty applies?
A: ARP limited warranty covers defects in materials and workmanship for as long as owned by original purchaser.
Shipping & Handling
- Method: UPS Ground or USPS Priority
- Availability: In stock - ships same or next business day
- Packaging: Individual protective envelope
- Weight: 0.016 lbs
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