Product Summary

One Wire Alternator, 100 amp Alternator Amperage

  • All alternators are for 12 volt, negative ground systems.
  • Comes with a V-groove pullet that is designed to accept most V-belts
  • Specially made from 100% new components and carry a one year limited warranty
  • Alternator is built in Cleveland, Ohio and are tested to meet or exceed OEM specifications
  • Has a simple 1-wire alternator option which features a low idle cut-in internal regulator and provides plenty of charging at low RPMs
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Key Specs

MFG. Part #7127D
One Wire AlternatorYes
Alternator Amperage100 amp
Alternator FinishNatural
Pulley StyleV-belt
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Need To Know

Quick and Easy Returns

Return Policy

Tuff Stuff 7127D Details

All Tuff Stuff alternators are hand built in Cleveland, Ohio and are tested to meet or exceed OEM specifications. All Tuff Stuff alternators are made from 100% new components and carry a one year limited warranty. Tuff Stuff has alternator applications for virtually all muscle cars, hot rods, customs and light trucks in just about every finish imaginable. Many enthusiasts prefer our clean, simple 1-wire alternator option which features a low idle cut-in internal regulator and provides plenty of charging at low RPMs. Available in chrome plated, polished aluminum, powder coated and plain as cast finishes. All alternators are for 12 volt, negative ground systems, except where noted.

  • Alternator
  • 100 AMP
  • OEM Or 1 Wire
  • V Groove Pulley
  • Internal Regulator
  • As Cast

Charts

Diagram (PDF)

Tuff Stuff 7127D Specifications

KEY SPECS
MFG. Part #7127D
BrandTuff Stuff
One Wire AlternatorYes
Alternator Amperage100 amp
Alternator FinishNatural
Pulley StyleV-belt
Belt TypeV-Belt
GENERAL
Alternator Case StyleGM 10SI/10DN/12SI
Voltage Required12-Volt
RegulatorInternal
Regulator StyleInternal
Regulator IncludedYes
Alternator Pulley IncludedYes
Alternator Pulley Grooves1 V-groove
Alternator Brackets IncludedNo
ColorNatural
Sold in QuantityEach
NotesWith 12si style smooth rear housing. V-belt pulley accommodates 3/8 in. wide belts.
GTIN Code698252015615
Belt IncludedNo

Ratings & Reviews

4.9

17 Reviews

Overall Assessment

Customers highly recommend this product thanks to its solid performance, durable build, and competitive price. They commend the unit's easy installation and quality output, enhancing the product's practicality and usability in modifying automobile systems. Despite the need for some minor adjustments for fitting and belt compatibility, users deem it an excellent value-for-money choice. Particularly for first-time hot rods builders or those converting from 6v to 12v, our product stands out as a reliable, satisfactory solution while offering superior quality and performance compared to alternatives.

4.9

17 reviews

5

15

4

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I would buy again

5.0

a month ago

Rat rod

Omaha ne

Verified

Used on a sbc 383 rat rod

Would Recommend

I would buy again

5.0

5 months ago

Rat rod

Omaha ne

Verified

Works grear

Would Recommend

I would buy again

5.0

5 months ago

Rat rod

Omaha ne

Verified

Works awesome looks great

Would Recommend

great Product

5.0

7 months ago

Cecil

Decatur, AL

Verified

seem to be great quality

Would Recommend

I would buy this alternator again!

5.0

a year ago

Codeman94

Kansas

Verified

Works perfectly right out of the box.

Would Recommend

I would buy this unit again if needed but should not need to

4.0

a year ago

Sharky

Hayden, idaho

Verified

I installed the alternator but have not ran the motor yet. Installation was easy and fit well.

Would Recommend

Quality product. MADE IN USA!

5.0

2 years ago

Keith

Bell Buckle, TN

Verified

Great finish and fit.

Would Recommend

Great Product

5.0

2 years ago

Bluecruzer

Oregon

Verified

Converted the original alternator on my 71 GMC to a one wire and cured my problems with charging.

Would Recommend

Works great

5.0

3 years ago

Jmcd

Aplington Ia

Verified

Walks as it should, I did need to change the front end frame to better fit my flathead, but this unit charges great.

Would Recommend

Tuff stuff is good stuff

5.0

4 years ago

Seth

Selkirk, NY

Easy to hookup, mind you it says it takes "most v belts" not all so if you are like me and your project car uses 5/8 belts you'll need to swap it out not hard but would be good to have in the description for those like myself that are first timers when it comes to building a hot rod and going through the fun of converting from 6v to 12v

Would Recommend

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Showing 10 of 17 reviews

Questions & Answers

1 Question • 1 Answer

What is the warranty on this alternator do I bring it back to speedway to switch it out

by Eric

• 3 months ago

1 answer

1 of 1 questions shown

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