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#2891004
GM Denso Style 1-Wire Mini Race Alternator, 90 Amp
- Alternator produces max 90 amps at max rpm (68 amps at turn on 1600 RPM)
- Its compact and lightweight design allows for installation in the tightest spaces
- Features a 1 wire installation and is 12V compatible
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$154.99
/each
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Product Summary
Universal Fit, One Wire Alternator, Internal Regulator
- Alternator produces max 90 amps at max rpm (68 amps at turn on 1600 RPM)
- Its compact and lightweight design allows for installation in the tightest spaces
- Features a 1 wire installation and is 12V compatible
- Has an internal regulator and includes a V-style pulley
- Available in a plain or black finish to better suit your style
Key Specs
| MFG. Part # | Select Color |
| One Wire Alternator | Yes |
| Alternator Amperage | 90 amp |
| Alternator Finish | Select Color |
| Pulley Style | V-belt |
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Details
Speedway Motors mini alternators are a great addition to your engine, whether it’s for the great look or the reliable high-amperage output. This alternator produces max 90 amps at max rpm (68 amps at turn on 1600 RPM), which will generally meet the demand of a hot rod or race application. Its compact and lightweight design allows for installation in the tightest spaces.
Specifications:
- Alternator Style: Nippondenso
- 6.15" mount center to center
- Maximum Amperage Output: 90 Amps (68 amps @ turn on 1600 RPM)
- Voltage Compatibility: 12 Volts
- One-Wire Capable: Yes
- Regulator Style: Internal
- Regulator Included: Yes
- Pulley Included: Yes
- Pulley Style: V-belt
- Finish: Choose Satin or Black
Guides & Documents
Specifications
Specifications
| KEY SPECS | |
|---|---|
| MFG. Part # | Select Color to see |
| Brand | Speedway Motors |
| One Wire Alternator | Yes |
| Alternator Amperage | 90 amp |
| Alternator Finish | Select Color to see |
| Pulley Style | V-belt |
| Belt Type | V-Belt |
| GENERAL | |
| Alternator Case Style | Nippondenso |
| Voltage Required | 12-Volt |
| Regulator | Internal |
| Regulator Included | Yes |
| Alternator Pulley Included | Yes |
| Alternator Pulley Grooves | 1 V-groove |
| Pulley Diameter | 2.5" |
| Alternator Pulley Material | Steel |
| Alternator Pulley Finish | Black Painted |
| Belt Width | 0.67" |
| Alternator Fan Included | No |
| Alternator Brackets Included | No |
| Outside Diameter | 5" |
| Overall Length | 5.75" |
| Color | Black |
| Sold in Quantity | Each |
| Centerline of Holes | 6.25" |
| Notes | Select Color to see |
Ratings & Reviews
4.7
29 Reviews
Customers appreciate our product for its compact design, able to fit into tight engine compartments with ease - a feature that sets it apart from the competition. The high power output of the alternator, even in its small size, is praised, along with its plug-and-play setup which simplifies the mounting process. Some customers insist on creating a dedicated ground for optimal performance. It is the ideal solution for those needing to replace larger alternators or generators in vintage or limited-space vehicles. However, customers noted that the product may require slight modifications to fit certain models. Overall, our product is recommended for its functionality, size, and value.
Ratings & Reviews
4.7
29 Reviews
Customers appreciate our product for its compact design, able to fit into tight engine compartments with ease - a feature that sets it apart from the competition. The high power output of the alternator, even in its small size, is praised, along with its plug-and-play setup which simplifies the mounting process. Some customers insist on creating a dedicated ground for optimal performance. It is the ideal solution for those needing to replace larger alternators or generators in vintage or limited-space vehicles. However, customers noted that the product may require slight modifications to fit certain models. Overall, our product is recommended for its functionality, size, and value.
4.7
29 reviews
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Most Liked Positive Review
5.0
it is exactly what i was looking for
I looked everywhere for a mini alternator that would fit into the tight engine compartment of my 1928 Plymouth coupe that has a 500 cu.in big block amd have enough amperage to run all the electrical at low rpm when crusing around town at night. This unit is perfact.
Most Liked Negative Review
1.0
Failed after 2 weeks
This mini alternator is a great idea but it cost over $100 expedited freight to find out they don't actually work.
Filter by Ratings
just what I needed.
5.0
2 months ago
jfb05177
north carolina
Verified
thanks for the assistance in placing order. arrived when promised. installed and working
Would Recommend

I recommend this to any hot rod builder
5.0
4 months ago
34 Plymouth
Needles
Verified
Put this on my 34 Plymouth hot rod it works great easy to install
Would Recommend
I would buy again
5.0
10 months ago
Dirtfun3
Oregon
Verified
Install was easy
Would Recommend
Good stuff
5.0
11 months ago
Speed Rush
Roswell, ID
Verified
Bought this for my new bracket race build. Wanted a smaller alternator but didn't want to spend the big prices for the other brands. Definitely a win here.
Would Recommend
just getting a charge out of things
5.0
a year ago
drunk
bedford va
Verified
great little product for a small place
Would Recommend
Hope it works as good as it looks
5.0
a year ago
Wego
Trumpmaga, Wisconsin
Verified
Haven't used it yet but fits up rather nicely
Would Recommend
Great
4.0
a year ago
Fordfan
Iowa
Verified
Use on my drag car . Made close to 1000 passes in the last two years
Would Recommend
Nice price
5.0
2 years ago
Jimmyjett04@gmail.com
Merrill wisconsin
Verified
Charging my Model A
Would Recommend
Nice looking
5.0
2 years ago
Paul
Elk grove ca
Doesn't fit power master bracket as it to big across but it does fit speedway bracket that is on back order, lucky I had a bracket to make it work
Would Recommend
90A Denso style .
5.0
2 years ago
Mark
Sugar Land , Texas
Verified
Needed a small high output alternator to mount on quick change rearend
Would Recommend
Showing 10 of 29 reviews
