# Proform 66273 | 66273 High-Torque Starter; Gear Reduction

### PROFORM 66273 APPLICATION SPECS:

### Attributes

-   Applications: GM LS1 Engines, GM LS2 Engines and GM LS6 Engines
-   Category: High-Torque Starter
-   Color: Black/Silver
-   Compression Ratio: 11 : 1
-   Finish: Silver/Black
-   Gear Reduction Ratio: 3.75:1
-   Make: GM
-   Material: Aluminum/Steel
-   Mounting Plate: Straight Bolt Mounting Plate
-   Rotation: Standard

### Product Description

1.4KW,Gear Reduction Type,Offset Design for More Oil Pan Clearance,100% New,Billet Aluminum Mounting Plate,For 11.1:1 Compression Ratio Engines,High-Torque Mini Starter,Fits All Chevy LS1, LS2, LS6 and LS7 Engines,Sold Each

### FAQ

**What part number is this?** The listed part number is 66273.

**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 66273
-   66273 specifications
-   Proform High-Torque Starter; Gear Reduction

## Details

- **Price:** 551.86 CAD
- **Vendor:** Proform
- **Type:** High-Torque Starter
- **Tags:** 66273, High-Torque Starter, Proform

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 551.86 CAD | In stock |

## Images

- Proform 66273 | 66273 High-Torque Starter; Gear Reduction

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/66273-vp-proform-518)
> Updated: 2026-10-20