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Item #:
146246988
Powermaster 57294 GM 12SI 150 Amp Alternator, Black
Item #:
146246988
TTD 1792
Price Details
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Powermaster's most popular GM alternator fits most models, 1965-'85 with straight mount 6.61 inch bolt spacing.
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What Stands Out
High Output Power
Delivers 150 amps of power, ensuring reliable performance for high-demand electrical systems in GM vehicles, making it ideal for enhanced audio systems and additional accessories.
Durable Design
Constructed with high-quality materials and a black finish, this alternator provides both aesthetic appeal and resilience against harsh engine conditions, ensuring longevity and reliability.
Easy Installation
Designed for direct fitment in GM vehicles, simplifying the installation process for DIY enthusiasts and professionals, minimizing downtime and maximizing enjoyment of enhanced electrical capabilities.
Product Details
| Brand | Powermaster |
| Type | Alternators |
| Manufacturer Part Number | 57294 |
| California Prop 65 Warning | True |
| UPC | 692209002949 |
| Country of Origin | China |
| Item Weight | 9 lbs (4.08 kg) |
Who Should Buy?
-
Heavy-Duty Users
Ideal for users with high electrical demands, needing reliable power for accessories and aftermarket installations.
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Off-Road Enthusiasts
Perfect for off-road vehicles requiring robust alternators to handle winches, lights, and other demanding accessories.
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Performance Upgrades
Beneficial for performance car enthusiasts looking to enhance electrical output without compromising overall vehicle performance.
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Standard Commuters
Not suitable for everyday vehicles with minimal electronic needs, as it may be overkill for standard operations.
Product Description
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Customer Questions & Answers
-
Question:
What vehicles does this alternator fit?
Answer: It fits most GM models from 1965 to 1985 with straight mount 6.61 inch bolt spacing. -
Question:
What is the output amperage of this alternator?
Answer: It provides 150 amps, with 90 amps at idle and 125 amps at cruising speed. -
Question:
Is installation easy for this alternator?
Answer: Yes, it is designed for easy installation, and it works as either a 1 or 3 wire operation.
powermaster Editorial Review
The Powermaster 57294 GM 12SI 150 Amp Alternator has garnered a positive reception among customers who have installed it in their vehicles. While some users encountered minor challenges during the installation process, most found it to be a straightforward task, with one reviewer highlighting a 20-minute installation on their 1985 Jeep Pioneer. Once installed, the alternator reportedly functions well, delivering adequate power and efficiency. Customers appreciate the product's reliability and performance, expressing satisfaction with its operational capabilities post-installation. The overall sentiment leans towards positive experience, with users feeling thankful for the product's effectiveness in powering their vehicles. **
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Pros
- Easy installation for most users
- Reliable performance after installation
- Sufficient power output (150 Amps)
Cons
- Minor installation challenges reported by some users
Platform Trust & Buyer Confidence
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Mohammad
Verified buyer
“Excellent quality and original too,when ubuy send original things I will appreciate that ,I very satisfied thank you”
23 July 2026 · via Trustpilot
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Chitra
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“The order and delivery progress was communicated very well. Package arrived within the estimated time. Products arrived as expected in good condition.”
22-Jul-26 · via Trustpilot
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“Good supply of products. Safe payment methods, and shipment worldwide! Genuine products.”
23-Jul-26 · via Trustpilot
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Onesi
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“Was my first time buying a product from Ubuy, but I found it so helpful. This is reliable. Gonna place a new order!”
22 July 2026 · via Trustpilot
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23 July 2026 · via Trustpilot
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Important information
- Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
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TTD 1792
Order now and get it around Saturday, August 15
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
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Features & Benefits
- High output at 150 amps with 90 amps at idle.
- Designed for easy installation with 1 or 3 wire operation.
- Features a durable black powder-coated finish and fan baffle.
- Includes internally regulated unit and single groove V-belt pulley.
- Perfect fit for 1965-'85 models with 6.61 inch bolt spacing.
- Reliable support and installation tips available from Powermaster.
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