# Proform 141-657 | 141-657 Chrome Alternator; New; 1-Wire; 100 Amp

### PROFORM 141-657 APPLICATION SPECS:

### Attributes

-   Amperage Output: 100 AMP
-   Applications: Chevy Small Block 262 to 400 Engines 1971 to 1987
-   Info: Chevy Big Block 402 to 454 Engines 1970 to 1986
-   Info: Pontiac 301 to 455 Engines 1962 to 1979
-   Info: Oldsmobile 215 to 455 Engines 1963 to 1984
-   Info: Oldsmobile 260 to 350 Diesel Engines 1978 to 1984
-   Info: Buick 215 to 455 Engines 1963 to 1979
-   Case Style: 10SI Style
-   Category: Alternators
-   Color: Chrome
-   Emblem: Chevy Bowtie Emblem
-   Finish: Chrome
-   Pulley Diameter: 2 1/2 inch
-   Wire Type: 1-Wire

### Product Description

Chrome Finish,GM 10si 1 Wire Style With Internal Regulator,Sold Individually,Alternator,100 AMP Model,100% New,Features Red GM Bowtie Logo,Includes Pulley,Officially Licensed GM Performance Parts Products

### FAQ

**What part number is this?** The listed part number is 141-657.

**Is this product designed for direct replacement?** Confirm the original part specifications and intended application before ordering.

**Should I confirm compatibility before ordering?** Yes. Compare the original part and specifications before ordering.

### Common Searches

-   Proform 141-657
-   141-657 specifications
-   Proform Chrome Alternator; New; 1-Wire; 100 Amp

## Details

- **Price:** 389.12 CAD
- **Vendor:** Proform
- **Type:** Chrome Alternator
- **Tags:** 141-657, Chrome Alternator, Proform

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 389.12 CAD | In stock |

## Images

- Proform 141-657 | 141-657 Chrome Alternator; New; 1-Wire; 100 Amp

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/141-657-vp-proform-518)
> Updated: 2026-10-20