SKU: 200-8551 | UPC: 672036035341
ARP M12 ID .875 OD Black Washers – Pack of 10 for GM LS Ford Modular
ARP M12 ID .875 OD black washers in a pack of 10 serve as essential hardware for high-performance engine builds. They fit GM LS-series engines in Chevrolet Camaro Corvette Silverado and Ford 4.6L 5.4L Modular engines in Mustang trucks. These washers provide consistent clamp load and resist fatigue for reliable performance on street strip or track.
Key Features
- Genuine ARP Construction: Forged from high-strength 8740 steel for dependable clamping under extreme torque and heat
- Precise Sizing: M12 inner diameter and 0.875 inch outer diameter with 0.062 inch thickness ensure exact fit on ARP studs
- Black Oxide Finish: Protects against corrosion and galling in harsh engine environments
- Matched Set Design: Pack of 10 includes uniform washers for balanced installation in head stud kits
- Versatile Application: Works across multiple ARP fastener kits for broad engine compatibility
Product Notes
- Inspect studs and holes before installation to confirm compatibility
- Keep washers clean and dry to maintain surface integrity
- Compact lightweight design ships without damage
Installation Notes
- Professional installation recommended.
- Clean all threads thoroughly and apply ARP Ultra-Torque fastener lubricant
- Torque to ARP or factory specifications in correct sequence recheck after heat cycles
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1997-2004 | Chevrolet | Camaro | LS1 Z28 SS |
| 1997-2004 | Chevrolet | Corvette | LS1 C5 |
| 1999-2007 | Chevrolet | Silverado 1500 | LS1 5.3L 6.0L |
| 2004-2006 | Pontiac | GTO | LS1 LS2 |
| 1996-2010 | Ford | Mustang | 4.6L Modular GT |
| 1997-2010 | Ford | F-150 Expedition | 5.4L Modular |
Why Choose ARP?
- Trusted by racers and builders for decades in demanding applications
- Manufactured with tight tolerances for repeatable results
- Backed by ARP engineering expertise and technical support
Frequently Asked Questions
- Q: Which ARP head stud kits use these washers?
A: Compatible with LS1 LS6 LS2 LS3 LS7 kits like ARP 234-4317 234-4363 and Ford Modular kits 208-4401 including Chevy small block and late model GM engines - Q: What material and finish do these washers have?
A: Made from high-strength 8740 chromoly steel with black oxide coating for corrosion resistance and smooth torque application - Q: Do these require special tools for installation?
A: Use standard torque wrench ARP lube and follow sequence no special tools needed beyond basics
Shipping & Handling
- Method: UPS Ground or USPS Priority
- Availability: In stock – ships same or next business day
- Packaging: Protective poly bag in 4 x 3 x 1 inch box
- Weight: 0.1 lbs
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