---
product_id: 91668930
title: "GM BRAKE LINE ADAPTERS (2 pc) 1/2-20 to 3/8-24 and 9/16-18 to 3/8-24"
brand: "manual brakes"
price: "C$115"
currency: NIO
in_stock: false
reviews_count: 7
url: https://www.desertcart.ni/products/91668930-gm-brake-line-adapters-2-pc-1-2-20-to
store_origin: NI
region: Nicaragua
---

# 3/8-24 & 1/2-20 Brass construction 2 adapters included GM BRAKE LINE ADAPTERS (2 pc) 1/2-20 to 3/8-24 and 9/16-18 to 3/8-24

**Brand:** manual brakes
**Price:** C$115
**Availability:** ❌ Out of Stock

## Summary

> 🚗 Upgrade Your Ride with Confidence!

## Quick Answers

- **What is this?** GM BRAKE LINE ADAPTERS (2 pc) 1/2-20 to 3/8-24 and 9/16-18 to 3/8-24 by manual brakes
- **How much does it cost?** C$115 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.ni](https://www.desertcart.ni/products/91668930-gm-brake-line-adapters-2-pc-1-2-20-to)

## Best For

- manual brakes enthusiasts

## Why This Product

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

## Key Features

- • **Easy Installation:** User-friendly design for quick and hassle-free setup.
- • **Robust Brass Build:** Durable construction ensures long-lasting performance.
- • **Precision Engineering:** Inverted flare design for leak-free connections.
- • **Seamless Compatibility:** Easily connects master cylinders with 3/8-24 female outlets.
- • **Versatile Applications:** Adapter #1 fits 1/2-20 male brake lines; Adapter #2 fits 9/16-18 male lines.

## Overview

The GM Brake Line Adapters set includes two precision-engineered brass adapters designed for seamless integration with various master cylinders. Adapter #1 connects 3/8-24 female outlets to 1/2-20 male brake lines, while Adapter #2 connects 3/8-24 female outlets to 9/16-18 male lines, ensuring a reliable and leak-free performance for your vehicle.

## Description

GM BRAKE LINE ADAPTERS (2 pc) 1/2-20 to 3/8-24 and 9/16-18 to 3/8-24

## Features

- 3/8-24 inverted flare male end and 1/2-20 inverted flare female end
- Adapter #1 is for use with master cylinders with 3/8-24 inverted flare female outlets and 1/2-20 inverted flare male brake line fitting
- Adapter #2 is for use with master cylinders with 3/8-24 inverted flare female outlets and 9/16-18-18 inverted flare male brake line fitting

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Manual Brakes |
| Brand | Manual Brakes |
| Exterior | Brass |
| Manufacturer Part Number | GBS10BLA |

## Images

![GM BRAKE LINE ADAPTERS (2 pc) 1/2-20 to 3/8-24 and 9/16-18 to 3/8-24 - Image 1](https://m.media-amazon.com/images/I/21nKgnKzfnL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Perfect GM adapters
  

*by S***T on Reviewed in the United States on January 5, 2021*

These adapters are a must of you want to use OEM 3/16" and 1/4" brake lines on 60's-70's GM models to a 3/8" threaded master cylinder (Baer, Wilwood, etc.). Good quality and they sealed perfect. As you can see they have a silver galvanize on them and not the brass look the description pic shows.  They arrived two days after ordering. Highly recommend.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    wilwood proportion valve on 96-00 chevy 5.7 vortec these are perfect!
  

*by Y***N on Reviewed in the United States on April 13, 2019*

exactly what i needed.  i spent a week trying to source fitting from auto parts stores and searching online when i came across this.  EXACTLY what i was looking for.  Thanks manual brakes for having these.  im about to order 2 more sets and do my buddies truck.  if your converting the rear drum to disc running a proportion valve helps alot and these fittings make it all possibe.  excellent quality and NO LEAKS.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Just what was needed!
  

*by M***A on Reviewed in the United States on March 24, 2020*

Awesome fittings! Sealed perfectly with new stainless lines. Used them for a Wilwood adjustable proportioning valve on factory style prebent lines for an '86 C10. They are not Cadmium-plated as the picture displays but instead they are a zinc-coated/galvanized steel. Shoot some clear or paint over them after they are installed if you're worried about longevity/cosmetic appeal!

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**Shop now:** [https://www.desertcart.ni/products/91668930-gm-brake-line-adapters-2-pc-1-2-20-to](https://www.desertcart.ni/products/91668930-gm-brake-line-adapters-2-pc-1-2-20-to)

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*Product available on Desertcart Nicaragua*
*Store origin: NI*
*Last updated: 2026-03-01*