---
product_id: 77678864
title: "Proform 66511 Harmonic Balancer"
brand: "proform"
price: "₨110723"
currency: LKR
in_stock: true
reviews_count: 3
category: "Pro Form"
url: https://www.desertcart.lk/products/77678864-proform-66511-harmonic-balancer
store_origin: LK
region: Sri Lanka
---

# Crafted in Mexico with trusted quality Precision fit for Chevy Small Block Durable 11 lb solid construction Proform 66511 Harmonic Balancer

**Brand:** proform
**Price:** ₨110723
**Availability:** ✅ In Stock

## Summary

> ⚙️ Tune your classic Chevy with precision and power!

## Quick Answers

- **What is this?** Proform 66511 Harmonic Balancer by proform
- **How much does it cost?** ₨110723 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/77678864-proform-66511-harmonic-balancer)

## Best For

- proform enthusiasts

## Why This Product

- Trusted proform brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact dimensions:** 8.75 x 8.75 x 5.5 inches for seamless integration into your engine bay.
- • **Robust 11-pound build:** Heavy-duty design ensures long-lasting vibration dampening and engine protection.
- • **Trusted ProForm quality:** Backed by a reputable brand with over 15 years in automotive parts.
- • **Engineered for Chevy Small Block:** Optimized fit for classic Chev S/B engines, enhancing performance and style.
- • **Upgrade your engine bay aesthetics:** Not just functional—adds a sleek, professional look to your classic ride.

## Overview

The Proform 66511 Harmonic Balancer is a durable, precision-engineered auto part designed specifically for Chevy Small Block engines. Weighing 11 pounds and measuring 8.75 x 8.75 x 5.5 inches, it offers reliable vibration dampening to protect your engine while enhancing the visual appeal of your engine bay. Manufactured in Mexico by ProForm, a trusted name in automotive parts since 2004.

## Description

Proform 66511 Harmonic Balancer. Chev S/B - Int 8.

Review: Must have - Using a harmonic balancer tool, it fits perfectly and improves the look of the engine bay on my 67 Chevelle
Review: Item did not fit car ,. - Did not fit 327 cu in car I ordered it for ,?

## Features

- Product Type: Auto Part
- Package Dimensions: 8.128 H x 21.59 L x 21.843 W (centimetres)
- Package Weight: 11.2 pounds
- Country of Origin : Mexico

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000630IEE |
| Best Sellers Rank | #637,347 in Automotive ( See Top 100 in Automotive ) #270 in Automotive Replacement Engine Harmonic Balancers |
| Brand | ProForm |
| Customer Reviews | 4.1 4.1 out of 5 stars (20) |
| Date First Available | November 21, 2004 |
| Item Weight | 11 pounds |
| Item model number | 66511 |
| Manufacturer | Proform |
| Manufacturer Part Number | 66511 |
| OEM Part Number | 66511 |
| Product Dimensions | 8.75 x 8.75 x 5.5 inches |

## Images

![Proform 66511 Harmonic Balancer - Image 1](https://m.media-amazon.com/images/I/51By+AV1nSL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Must have
*by 6***R on August 9, 2018*

Using a harmonic balancer tool, it fits perfectly and improves the look of the engine bay on my 67 Chevelle

### ⭐ Item did not fit car ,.
*by J***. on March 5, 2025*

Did not fit 327 cu in car I ordered it for ,?

### ⭐⭐⭐⭐⭐ Exactly Like old one
*by R***. on January 6, 2022*

Good quality and works like it should. Put new cam in SBC and replaced old balancer

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**Shop now:** [https://www.desertcart.lk/products/77678864-proform-66511-harmonic-balancer](https://www.desertcart.lk/products/77678864-proform-66511-harmonic-balancer)

---

*Product available on Desertcart Sri Lanka*
*Store origin: LK*
*Last updated: 2026-05-16*