The 5 Best Brass Brake Line Unions (2023 reviews)

Here, we present union that manages to win our hearts. It's the frienda brass brake line union and it's widely considered as one of all-around great union you can buy. These unions are a nice option to join 2 (3/16 inch) brake lines together. They fit 3/16 factory Ford brake lines and don't leak. They are close enough so they will thread together with SAE original equipment but that is no doubt where people are having problems. It is easy to use on replacing a rusty brak line.

These are double flare fittings. They are made of quality brass to prevent rust and plated for corrosion resistance. These are to be used as a unit, 2 nuts and a union to connect two lines together. It is perfect for splicing a new endpoint onto a 3/16 line.

Why We Like This:

Best product for break line repairs
Metric size and metric thread for modern vehicles
Good brand reputation

Best For making A Brake Line repair: Muhize Brass Brake Line Union

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The muhize brass brake line union is suitable and reliable and fits well with your daily purpose. It features and benefits of a braking line. It is committed to providing customers with high-quality and safe car accessories so that customers value for money. It is made of durable brass with unique rust corrosion proofing technology. The holes for the tubing to go through are a bit on the large side. They do not leak. These are great to keep on hand so you have them when you need them. It is great to have for car projects.

Why We Like This:

Worked great for brake line repair
Don't forget a little anti-seize, helps when going together and taking apart
Delivers what they promise

Best For splicing Lines: Stop shop Brass Brake Line Union

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Best part: stop shop brass brake line union costs comparatively low and it is available to ship in 24 hours. If you have a brake line that needs bent by hand this is absolutely the way to go. These couplings can be used with single or double flared tubing. It is made from steel plated for corrosion resistance. This part makes a solid junction when you have to extend a brake line. It has a wall thickness of.. They will work with any inverted/double flare type fitting for 3/. It does require a higher end flaring tool.

Why We Like This:

Fittings and tube size will match factory tubes
Stainless steel looks great and will never rust
Delivers what they promise

Best performance product: Stop shop Brass Brake Line Union

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Compared with other union in this category, the stop shop brass brake line union has a convenient design. Stainless isn't just a great look but it's also a great performance product. This nylon tube can be connected directly to original steel tubes on vehicles. It is made from steel plated for corrosion resistance. If you have a brake line that needs to be bent by hand this is absolutely the way to go. It has a wall thickness of.. It does require a higher end flaring tool.

Why We Like This:

Fittings and tube size will match factory tubes
Stainless steel looks great and will never rust
New and hot release

Best For use: auto Supplies Direct Brass Brake Line Union

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The auto supplies direct brass brake line union's superior materials makes sure that it ages well with use. Designed to fit the most common 5/16" SAE inverted flare / double flare size, these unions are ideal for a wide range of applications. These unions feature a 1/2" - 20 thread, which makes them easy to install and ensures a secure fit. These are compatible with 5/16" steel, copper, nickel poly armour, and cupronickel tubing, which makes them versatile and easy to use with your preferred brake line of choice.

It is designed for use in automotive brake line systems, but they can also be used in other applications, making them versatile for other mechanical projects as well. This pack includes five unions, so you can stock up and have spares on hand, reducing downtime in case of a replacement.

Why We Like This:

Compatible with 5/16" steel, copper, nickel poly armour, and cupronickel tubing
High pressure resistant, constructed from safe and professional quality brass, lead free
One of the new comers and featured product