Login for Access to Member Pricing

ARP

ARP 3/8ID 3/4OD SS Washers

MPN: 400-8537 Catalog #: 00910271 Category: Hardware - Singles Check Vehicle Fitment

Product Details

ARP Quality washers from for many applications, such as attaching accessories, chassis components, etc. They are not of the hardness required for use on cylinder heads, mains and connecting rods. Available in black oxide and stainless steel. Stainless demonstrates excellent corrosion resistance. Washers have over-sized I.D. (inside diameter) to clear most under-bolt head radii. Available for 1/4, 5/16, 3/8, 7/16, 1/2? and 10mm shank bolts and studs.

Flat Washer - Special Purpose - Chamfered - 0.375 in ID - 0.75 in OD - 0.12 in Thick - Stainless - Polished - Set of 10

Vehicle Fitment

Universal or product-specific fitment. Please review the product details and contact us if you need help confirming fitment before ordering.

Product Specs

Brand
ARP
Part Number
400-8537
Catalog Number
00910271
Product Line
Washer (Single)
Category
Engines & Parts
Type
Hardware - Singles
UPC / Barcode
672036034474
Length
5.95 in
Width
3.80 in
Height
0.40 in
Weight
0.12 lb
Ship Alone
No
Air Restricted
No

Shipping & Availability

Current status 23 Available - Ready to ship
Estimated timing Usually ships within 24hrs

This item is showing available inventory. Most in-stock performance parts ship quickly, but timing can vary by warehouse, vendor cut-off time, holidays, and carrier pickup.

Inventory shown: 23 available as of 6/3/2026.

Reviews & Questions

Real product feedback when available, plus quick ways to get fitment or product help.

Ask a Question
Need fitment help? Send us your year, make, model, engine, and the part number.
Already bought it? Reviews help other LMPerformance customers choose the right part.
Product question? We can help with specs, shipping, availability, and install details.

Other Popular Hardware - Singles

$30.53
^