Engines and Components› Cylinder Heads and Components
ARP
ARP M10 ID .850inOD Black Chamfer Washer (single washer)
SKU: A00M 200-8590
Beginner — under 30 min
Description
Its dimensions include an inside diameter of 0.394 inches (10.000 mm), an outside diameter of 0.850 inches (21.590 mm), and a thickness of 0.120 inches (3.048 mm).
Fitment
Fitment Guaranteed
Don’t gamble
on fit.
Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
Available on iOS & Android
Specifications
| Brand | ARP |
| Part Number | A00M 200-8590 |
Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
View Full Return Policy