Ignitions and Electrical› Charging Systems

Tuff Stuff

GM 1-Wire OEM Voltage Regulator

$24.68

SKU: T01U 7639

In Stock
In Stock
Ships by Jun 18
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The Tuff Stuff 7639 is an alternator replacement voltage regulator designed for 10SI alternators. It can be used with either a 1-wire setup or your vehicle's OEM wiring. This regulator features heavy-duty electronics for longevity and is built to resist voltage spikes.

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.

Available on iOS & Android

Specifications

BrandTuff Stuff
Part NumberT01U 7639

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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