Gaskets and Seals› O-rings, Grommets and Vacuum Caps

Helicoil

1/4-20 KIT

$43.27

SKU: H01G 5521-4

In Stock
In Stock
Ships by Jun 13
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The Heli-Coil 5521-4 is an inch coarse thread repair kit designed to fix damaged or stripped threads. This kit includes a tap, installation tool, and 12 thread inserts. It is suitable for use on oil and transmission pan screws, as well as exhaust manifold studs. The inserts are made of stainless steel and measure 1/4 inch-20 TPI with a length of 0.375 inch. The required drill size for this kit is 17/64 inch.

Fitment

Fitment Guaranteed

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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

BrandHelicoil
Part NumberH01G 5521-4

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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