---
product_id: 19342061
title: "Dorman M630031 Brake Master Cylinder Compatible with Select Cadillac / Chevrolet / GMC Models"
brand: "dorman"
price: "€ 82.72"
currency: EUR
in_stock: true
reviews_count: 9
category: "Dorman"
url: https://www.desertcart.ie/products/19342061-dorman-m630031-brake-master-cylinder-compatible-with-select-cadillac-chevrolet
store_origin: IE
region: Ireland
---

# EPDM rubber resists brake fluid Precision-engineered housing 100% new, not remanufactured Dorman M630031 Brake Master Cylinder Compatible with Select Cadillac / Chevrolet / GMC Models

**Brand:** dorman
**Price:** € 82.72
**Availability:** ✅ In Stock

## Summary

> 🚗 Upgrade your brake game with confidence and precision!

## Quick Answers

- **What is this?** Dorman M630031 Brake Master Cylinder Compatible with Select Cadillac / Chevrolet / GMC Models by dorman
- **How much does it cost?** € 82.72 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/19342061-dorman-m630031-brake-master-cylinder-compatible-with-select-cadillac-chevrolet)

## Best For

- dorman enthusiasts

## Why This Product

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

## Key Features

- • **Fitment Confidence:** Use our garage tool to confirm perfect vehicle compatibility
- • **Brand New Assurance:** Crafted entirely from new materials for peak safety
- • **OEM-Grade Precision:** Exact casting match for flawless original performance
- • **Durability That Lasts:** Premium EPDM rubber seals withstand glycol brake fluids
- • **SAE-Certified Quality:** Meets strict SAE International standards for reliability

## Overview

The Dorman M630031 Brake Master Cylinder is a 100% new, precision-engineered replacement part designed to match original OEM specifications for select Cadillac, Chevrolet, and GMC models from 1999 to 2002. Featuring durable EPDM rubber components resistant to glycol-based brake fluid and manufactured to meet rigorous SAE standards, it ensures reliable braking performance and safety. Confirm fitment easily with the integrated garage tool before purchase.

## Description

This brake master cylinder is precision-engineered to match the design, function, and performance of the original master cylinder on specific vehicle years, makes and models. It is made of new, quality materials for a safe, durable replacement. This part is compatible with the following vehicles. Before purchasing, enter your vehicle trim in the garage tool to confirm fitment. [Cadillac Escalade EXT: 2002] - [Cadillac Escalade: 2002] - [Chevrolet Avalanche 1500: 2002] - [Chevrolet Blazer: 2000, 2001, 2002] - [Chevrolet Silverado 1500 HD: 2001, 2002] - [Chevrolet Silverado 1500: 1999, 2000, 2001, 2002] - [Chevrolet Suburban 1500: 2000, 2001, 2002] - [Chevrolet Tahoe: 2000, 2001, 2002] - [GMC Sierra 1500 HD: 2001, 2002] - [GMC Sierra 1500: 1999, 2000, 2001, 2002] - [GMC Yukon XL 1500: 2000, 2001, 2002] - [GMC Yukon XL 2500: 2001, 2002] - [GMC Yukon: 2000, 2001, 2002].

Review: Great replacement - Good price. Works as it should.
Review: GM Master Cylinder works Great! - My truck is 23 years old and the brakes were getting soft. Replace brake pads and rotors and the last item was the master cylinder. After reading how to bleed the master cylinder before installation, I installed it into my truck. took about 20 minutes to installed. Then took the next 90 minutes to bleed all my wheels. Hardest part was getting to the brake cylinders under the truck. Once done, it worked perfectly. Brake are feeling harder and stops as expected. Good product for my Chevy Truck!

## Features

- Precise replacement - cylinder housing is constructed to match the casting material of the original part and ensure similar performance
- Durable design - all rubber components are made of quality EPDM compound for resistance to glycol-based brake fluid
- 100% new - made entirely of new materials, not remanufactured, to ensure highest quality and safety
- Strict specifications - made to meet rigorous SAE International standards
- Ensure fit - Input your vehicle into the garage tool and check Confirmed Fit bar at the top of the page. If there is an “i” in a blue circle, additional verification is needed. Please hover over the "i" to verify fitment notes match your vehicle.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B001PYTM7C |
| Best Sellers Rank | #30,161 in Automotive ( See Top 100 in Automotive ) #19 in Automotive Replacement Brake Hydraulic Parts |
| Brand | Dorman |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,031) |
| Date First Available | January 13, 2009 |
| Exterior | Machined |
| Item Weight | 1.6 ounces |
| Item model number | M630031 |
| Manufacturer | Dorman Products |
| Manufacturer Part Number | M630031 |
| Model | M630031 |
| OEM Part Number | 10-2881; 13-2881; 130.66041; 131.66041; 13570; 174-1003; F131468; F140673; M-86038; M3089; M901215; M901239; MC140673; MC390541; MC500150; MC500320; NM3089; 18040252; 18048538; 18060789; 19209249 |
| Product Dimensions | 12.6 x 7.8 x 5.4 inches |

## Images

![Dorman M630031 Brake Master Cylinder Compatible with Select Cadillac / Chevrolet / GMC Models - Image 1](https://m.media-amazon.com/images/I/81m3ONpfHoL.jpg)

## Questions & Answers

**Q: Does a bad master cylinder causes breaks to start sticking?**
A: Yes, a master cylinder failure can cause your master power brakes to stick. Normally, your master cylinder is filled with brake fluid. When you press the brake pedal, the hydraulic pressure in your brake system increases, which forces the calipers to grab the rotor or the shoes to engage the brake drums. If the system fails while your foot is on the brakes, it is possible that your system will remain locked in an “on” condition, causing your brakes to stick. Though rare, this situation can occur as your brake system fails to release its components and the brakes remain in an “on” condition. Also, check to make sure your caliper pins are also greased and the boots are not damaged, I have seen them actually rust and seize inside the housing causing sticking brake problems as well.

**Q: Will this work with 4 wheel disc brakes**
A: Yes. Used it on my 2000 Chevy with 4 wheel disk brakes

**Q: does this fit a 1999 jeep wrangler?**
A: This fits my ‘02 Chevy Tahoe.

**Q: 88 suzuki samurai master cylinder, which part number?**
A: REGISTER YOUR VEHICLE WITH AMAZON AND THEY WILL TELL YOU.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great replacement
*by R***G on December 3, 2025*

Good price. Works as it should.

### ⭐⭐⭐⭐⭐ GM Master Cylinder works Great!
*by J***L on July 2, 2025*

My truck is 23 years old and the brakes were getting soft. Replace brake pads and rotors and the last item was the master cylinder. After reading how to bleed the master cylinder before installation, I installed it into my truck. took about 20 minutes to installed. Then took the next 90 minutes to bleed all my wheels. Hardest part was getting to the brake cylinders under the truck. Once done, it worked perfectly. Brake are feeling harder and stops as expected. Good product for my Chevy Truck!

### ⭐⭐⭐⭐⭐ Super easy install
*by M***R on December 23, 2025*

Put this on my 1996 1500 super easy install.. brakes are so much more now night and day difference..the brakes feel like my 2012 1500 amazing.

## Frequently Bought Together

- Dorman M630031 Brake Master Cylinder Compatible with Select Cadillac / Chevrolet / GMC Models
- Dorman 13911 Master Cylinder Bleeder Kit - 22 In. Hose, Clip, And Sae And Metric Fittings Universal Fit
- Dorman 14151 Master Cylinder Bleeder Kit

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