# Proform 66766 | Piston Ring Compressor; Adjustable; Proform 66766 ADJUSTABLE RING COMPRESS

### PROFORM 66766 APPLICATION SPECS:

### Product Description

Putting the connecting rod through first, simply place the piston (with rings) into the tapered end of the ring compressor. Tighten the compressor snugly around the base of the piston. Then lay the compressor flat on the engine cylinder bore.

### Features & Benefits

-   Made From High Quality Aluminum
-   Features A Blue Anodized Finish
-   Designed For Durability
-   Easy Installation
-   Limited 1 Year Or Unlimited Mile Warranty

### Attributes

-   Type: Adjustable
-   Minimum Diameter (IN): 4 Inch
-   Maximum Diameter (IN): 4.09 Inch
-   Finish: Anodized
-   Color: Blue
-   Material: Aluminum

PRODUCT FEATURES:

Proform 66766 ADJUSTABLE RING COMPRESS

### FAQ

**What part number is this?** The listed part number is 66766.

**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 66766
-   66766 specifications
-   Proform Piston Ring Compressor; Adjustable; Proform 66766 ADJUSTABLE RING COMPRESS

## Details

- **Price:** 130.8 CAD
- **Vendor:** Proform
- **Type:** Piston Ring Compressor
- **Tags:** 66766, Piston Ring Compressor, Proform

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 130.80 CAD | In stock |

## Images

- Proform 66766 | Piston Ring Compressor; Adjustable; Proform 66766 ADJUSTABLE RING COMPRESS

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/66766-vp-proform-518)
> Updated: 2026-10-20