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Works as either a 1 or 3 wire operation, Features a black finish with fan baffle to dissipate heat, Internally regulated and comes with a single groove pulley, Puts out 150 amp with 90 amps at idle, and 125 amps at cruising speed, Specially designed for the 1965-'85 with straight mount 6.61 inch bolt spacing Powermaster 57294 GM 12SI 150 Amp Alternator, Black Sku # 25557294 Mfr. Part # 57294 Condition New Brand Powermaster Sold Each Details
Powermaster's most popular GM alternator fits most models, 1965-'85 with straight mount 6.61 inch bolt spacing.
- Works as 1 or 3 wire operation
- Internally regulated
- Pulley included, single groove
- V-belt style
- 150 amp with 90 amps at idle, and 125 amps at cruising speed
- Black finish with fan baffle
Alternator FAQ (Link)
See the difference between the popluar alternators we offer by reading our tech article, GM Alternator Buying Guide (Link) and learn how to correctly install your new 1-wire alternator by reading our tech article, 1-Wire Alternator Conversion (Link).
Specs One Wire Alternator Yes Alternator Case Style GM 10SI/10DN/12SI Alternator Amperage 150 amp Voltage Required 12-Volt Regulator Internal Regulator Style Internal Alternator Finish Powder Coated Regulator Included Yes Alternator Pulley Included Yes Belt Width 0.375" Alternator Brackets Included No Overall Length 6.25" Color Black Sold in Quantity Each Centerline of Holes 6.61" MFG. Part # 57294 Notes Made in the USA GTIN Code 692209002949 Belt Included No Pulley Style V-belt Coating Type Powdercoated Belt Type V-Belt Reviews I would buy again no doubt Rated by Gator on June 07, 2024
Summary: Used it on mud truck workes great
Yes, I recommend this product.
Good Alternator for a Hot Rod Rated by DST on April 18, 2023
Summary: Worked as described for my hot rod.
No, I would not recommend this product.
Alternator Rated by 250tony on September 13, 2022
Summary: Fast delivery. Great web site. Simple to use
Yes, I recommend this product.
Nice high output alternator :) Rated by Dadude on May 18, 2020
Summary: Easy instructions and easy install
Yes, I recommend this product.
Related Items / Suggested Parts GM 12SI 150 Amp Black Alternator and SBC Upper Bracket GM 12SI 150 Black Alternator with SBC Alternator Bracket, Plain Tuff Stuff 754636 36 Inch 8 Gauge Charge Wire With Boot Speedway GM Internally-Regulated Alternator Wiring Harness Tech Support We're here to help before and after your purchase. If you have a question or need assistance with one of our products, please contact us through Messaging and a knowledgeable Speedway Motors team member will be happy to help. About Speedway Motors is America’s Oldest Speed Shop® and has been a trusted source for specialty rodding and racing products and friendly expert advice for more than 74 years. Founded in 1952 by “Speedy” Bill Smith – a racer and street rodder himself – Speedway has grown from a one-man operation to become the world’s largest manufacturer, distributor and retailer of street rod and racing products. Our industry-leading fast delivery is the result of same-day shipping from our state-of-the-art, centrally located 500,000 sq. ft. headquarters. Speedway’s size offers customers unmatched product selection and low pricing, while our excellent technical support and customer service have made us a recognized leader in the rodding and racing industries.
