---
product_id: 309993563
title: "Dorman M39646 New Brake Master Cylinder"
brand: "dorman"
price: "$190"
currency: NZD
in_stock: true
url: https://www.desertcart.nz/products/309993563-dorman-m39646-new-brake-master-cylinder
store_origin: NZ
region: New Zealand
---

# Meets strict SAE International standards EPDM rubber resists glycol brake fluids 100% new materials for peak reliability Dorman M39646 New Brake Master Cylinder

**Brand:** dorman
**Price:** $190
**Availability:** ✅ In Stock

## Summary

> 🚗 Upgrade your brake game with uncompromising quality!

## Quick Answers

- **What is this?** Dorman M39646 New Brake Master Cylinder by dorman
- **How much does it cost?** $190 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/309993563-dorman-m39646-new-brake-master-cylinder)

## 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

- • **Engineered for Endurance:** High-quality EPDM rubber components resist brake fluid corrosion, ensuring long-lasting, leak-free operation.
- • **Precision Fit Guaranteed:** Use our garage tool to input your vehicle’s make, model, and trim for an exact, hassle-free fit every time.
- • **Certified Safety Standards:** Manufactured to meet rigorous SAE International specifications, so you drive with confidence.
- • **Complete Ready-to-Install Unit:** Includes reservoirs, caps, and fluid sensors in most units—everything you need for a seamless upgrade.
- • **Pure Performance, No Compromise:** Crafted entirely from new, premium materials—never remanufactured—to guarantee maximum safety and durability.

## Overview

The Dorman M39646 Brake Master Cylinder is a 100% new, precision-engineered replacement part featuring durable EPDM rubber components resistant to glycol-based brake fluids. Built to meet strict SAE International standards, it ensures a perfect fit for your vehicle when using the garage tool. This master cylinder comes mostly complete with reservoirs, caps, and fluid sensors, delivering reliable braking performance and peace of mind.

## Description

New, not remanufactured master cylinder. Reservoirs, caps and fluid sensors are supplied in the majority of units.

## Features

- Durable design - all rubber components are made of high-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 - to make sure this part fits your exact vehicle, input your make, model and trim level into the garage tool
- International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Dorman - First Stop |
| Brand | Dorman |
| Model | Dorman M39646: Brake Master Cylinder |
| Product Dimensions | 32 x 19.81 x 13.72 cm; 0.28 g |
| Item model number | M39646 |
| Manufacturer part number | M39646 |
| OEM Part Number | 10-2352; 12219; 13-2352; 130.66021; 131.66021; 174-668; 18M1746; 18M361; 2539646; 783-44021; 83-44021; F116881; M-86021; M900567; MC116881; MC39646; NM2219; 18013977; 18060086; 4746392 |
| Item Weight | 0.28 g |

## Images

![Dorman M39646 New Brake Master Cylinder - Image 1](https://m.media-amazon.com/images/I/81uR3s0IowL.jpg)
![Dorman M39646 New Brake Master Cylinder - Image 2](https://m.media-amazon.com/images/I/9177QpMOX8L.jpg)
![Dorman M39646 New Brake Master Cylinder - Image 3](https://m.media-amazon.com/images/I/81NzFGKUotL.jpg)
![Dorman M39646 New Brake Master Cylinder - Image 4](https://m.media-amazon.com/images/I/81n-YKmnVkL.jpg)

## Questions & Answers

**Q: Will this fit an 1989 Silverado?**
A: This fits the following 1989 models
1989 	Chevrolet 	C1500 	Power Brakes; GAS 		w/Heavy Duty Suspension; Bore: 1.125 In. and 1.5781 In.
1989 	Chevrolet 	C2500 	DIESEL 		Bore: 1.125 In.
1989 	Chevrolet 	C2500 	GAS 		7,200 Lb. GVW; Bore: 1.125 In. and 1.5781 In.
1989 	Chevrolet 	K1500 	GAS 		w/Heavy Duty Suspension; Bore: 1.125 In.
1989 	Chevrolet 	K2500 	GAS 		7,200 Lb. GVW; Bore: 1.125 In. and 1.5781 In.
1989 	GMC 	C1500 	Power Brakes; GAS 		w/Heavy Duty Suspension; Bore: 1.125 In. and 1.5781 In.
1989 	GMC 	C2500 	DIESEL 		Bore: 1.125 In.
1989 	GMC 	C2500 	GAS 		7,200 Lb. GVW; Bore: 1.125 In. and 1.5781 In.
1989 	GMC 	K1500 	GAS 		w/Heavy Duty Suspension; Bore: 1.125 In. and 1.5781 In.
1989 	GMC 	K2500 	GAS 		7,200 Lb. GVW; Bore: 1.125 In. and 1.5781 In

**Q: Will this fit a 96 silverado?**
A: No sorry it will not fit your vehicle.

**Q: Does this come with port screws that can be used to bench bleed it?**
A: No. Mine did not come with the screws

**Q: Is this the one that will fit my 95 Silverado with 350 engine**
A: Sorry no it doesn't fit this truck.

## Frequently Bought Together

- Dorman M39646 Brake Master Cylinder Compatible with Select Chevrolet / Dodge / GMC Models
- Dorman 13911 Master Cylinder Bleeder Kit - 22 In. Hose, Clip, And Sae And Metric Fittings Universal Fit
- Prestone AS401 DOT 3 Synthetic Brake Fluid - 32 oz.

---

## 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.nz/products/309993563-dorman-m39646-new-brake-master-cylinder](https://www.desertcart.nz/products/309993563-dorman-m39646-new-brake-master-cylinder)

---

*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-01-25*