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ARP 200-8521 Special Purpose Washers 2-Pack Black Oxide

Manufacturer

Picture for manufacturer ARP

Part Number

200-8521
16 reviews
Sale Price

$3.55

Estimated ship date Thursday, November 19

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No Hassle Returns

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Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

ARP 200-8521 Special Purpose Washers deliver the high-performance quality that professional engine builders demand. These premium washers are precision-engineered for critical fastening applications throughout your engine, drivetrain, and chassis.

Construction and Features:

  • Constructed from premium chrome moly steel for maximum strength and durability
  • Parallel-ground surfaces ensure even load distribution and precise torque values
  • Heat-treated and hardened for superior performance under extreme conditions
  • Black oxide finish provides corrosion resistance and a professional appearance
  • No chamfer design for specific fastening requirements
  • Oversized inside diameter clears most under-bolt head radii

Applications:

  • Ideal for cylinder head bolts and studs, main caps, and connecting rod applications
  • Perfect for accessory mounting, chassis components, and engine assembly
  • Prevents galling and ensures proper torque transfer

This 2-piece package allows you to replace damaged washers or build your inventory of premium fastening hardware. ARP washers meet or exceed the demanding standards of NHRA, IHRA, NASCAR, and Formula 1 racing professionals.

Products specifications

Hardened

Yes

Inside Diameter Chamfer

No

Material

Black Oxide

Quantity

Sold as a pair.

Size (ID/OD)

7/16 / 3/4

Thickness

.120in

Washer Finish

Black oxide

Washer Inside Diameter (in)

0.438 in.

Washer Inside Diameter (mm)

11.125 mm

Washer Material

Chromemoly

Washer Outside Diameter (in)

0.750 in.

Washer Outside Diameter (mm)

19.050 mm

Washer Thickness (in)

0.150 in.

Washer Thickness (mm)

3.810 mm

It was fast and it was correct

Stellar !

Great prices!!

I purchased from Amazon the same tires. But I had to order a bigger size because Ive been hittin a lot of pot holes so these are going to protect my rim better than the 225/30/20s

The part worked wonderful. Could use instructions?

Good

Easy and simple.

Fast and easy good pricing

Wonderful e3 spark plugs direct fit for my 84 porsche 944. Will never use a lesser plug! Thank you autoplicity for wonderful prices and fast shipping.

Great price and easy to place order

Quick and easy. Parts were as stated and fit perfect.

Best prices. Easy ordering. On-time delivery.

ordering went smooth great site, I received my order the next day.

Great company..Great communication..Fast shipping. A+++++++++++++++.<br>Will do business again.

so far so good!

Great Price!

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