---
product_id: 269726156
title: "Acdelco Professional 18M66 Brake Master Cylinder Assembly"
brand: "acdelco"
price: "€ 91.97"
currency: EUR
in_stock: true
url: https://www.desertcart.ie/products/269726156-acdelco-professional-18m66-brake-master-cylinder-assembly
store_origin: IE
region: Ireland
---

# SAE J1153/54 Certified Vehicle Specific Fit Pressure Tested Acdelco Professional 18M66 Brake Master Cylinder Assembly

**Brand:** acdelco
**Price:** € 91.97
**Availability:** ✅ In Stock

## Summary

> 🚦 Stop on a Dime with Confidence!

## Quick Answers

- **What is this?** Acdelco Professional 18M66 Brake Master Cylinder Assembly by acdelco
- **How much does it cost?** € 91.97 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/269726156-acdelco-professional-18m66-brake-master-cylinder-assembly)

## Best For

- acdelco enthusiasts

## Why This Product

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

## Key Features

- • **Enhanced Safety:** Pressure tested to guarantee safe and confident braking every time.
- • **Durable Construction:** Crafted from high-quality cast iron and aluminum for long-lasting durability.
- • **Brake Drag Prevention:** Innovative piston assembly and return spring design minimize premature brake pad wear.
- • **Precision Engineering:** Geometrical tolerance ensures a perfect fit with no extra stress on your vehicle.
- • **Unmatched Reliability:** Engineered to meet stringent SAE standards for optimal brake performance.

## Overview

The ACDelco Professional 18M66 Brake Master Cylinder Assembly is a high-performance component designed to meet SAE J1153 and J1154 standards, ensuring reliability and safety. With its durable cast iron and aluminum construction, precise geometrical tolerance, and innovative design features, this assembly provides a perfect fit and minimizes brake drag, enhancing the longevity of your brake pads.

## Description

Acdelco Professional 18M66 Brake Master Cylinder Assembly

## Features

- meets the brake performance requirements of sae j1153 and j1154 testing, providing reliability and quality
- pressure tested to ensure safe and confident braking
- cast iron and aluminum specifications; no extra stress on the brake boosting mounting
- geometrical tolerance ensures that the body and plastic reservoir match for a proper fit
- piston assembly and return spring help to prevent brake drag, which can cause premature brake pad wear
- Fit type: Vehicle Specific

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | ACDelco |
| Brand | ACDelco |
| Model | ACDelco - Brake Master Cy (Slp) (18M66) |
| Product Dimensions | 23.88 x 14.73 x 12.19 cm; 453.59 Grams |
| Item model number | 18M66 |
| Manufacturer Part Number | 18M66 |
| OEM Part Number | 18030308 |
| Item Weight | 454 g |

## Images

![Acdelco Professional 18M66 Brake Master Cylinder Assembly - Image 1](https://m.media-amazon.com/images/I/713VJVU0xrL.jpg)
![Acdelco Professional 18M66 Brake Master Cylinder Assembly - Image 2](https://m.media-amazon.com/images/I/71k-OnDElVL.jpg)
![Acdelco Professional 18M66 Brake Master Cylinder Assembly - Image 3](https://m.media-amazon.com/images/I/71qvh205AUL.jpg)
![Acdelco Professional 18M66 Brake Master Cylinder Assembly - Image 4](https://m.media-amazon.com/images/I/71OzhmUyc9L.jpg)
![Acdelco Professional 18M66 Brake Master Cylinder Assembly - Image 5](https://m.media-amazon.com/images/I/41wPUPS5vJL.jpg)

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.ie/products/269726156-acdelco-professional-18m66-brake-master-cylinder-assembly](https://www.desertcart.ie/products/269726156-acdelco-professional-18m66-brake-master-cylinder-assembly)

---

*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-02-27*