Engines and Components› Cylinder Heads and Components

ARP

S/S 12pt. Nut - 1/4-28 (1)

$2.50

SKU: A00M 400-8300

In Stock
In Stock
Ships by Jul 29
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The ARP 400-8300 is an engine fastener kit featuring stainless steel nuts with a polished finish. Designed by ARP, a company known for quality fasteners since 1968, this kit is built to withstand extreme conditions and meet the demands of automotive enthusiasts. The nuts have a 1/4 in.-28 thread size and require a 5/16 in. socket for installation.

Fitment

Fitment Guaranteed

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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.

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Specifications

BrandARP
Part NumberA00M 400-8300

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.

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