Sale

Ignitions and Electrical› Charging Systems

Tuff Stuff

GM Alternator As Cast In ternal Regulator 100 amp

$194.33 $139.44 Save $54.89

SKU: T01U 7127D12

In Stock
In Stock
Ships by Jun 9
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The Tuff Stuff 7127D12 is a 100-amp alternator designed for 12-volt systems. It features an internal regulator and a V-groove pulley, compatible with GM 10SI/10DN/12SI alternator cases. This alternator is built with cast steel and offers a natural finish. It is made in the USA.

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.

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Specifications

BrandTuff Stuff
Part NumberT01U 7127D12

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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