Best Union Car Brake Fittings in 2026

Seamlessly drawn stainless steel with molybdenum for extra resistance against rust and corrosion

Use this coil to create 3/16 Domestic, European, Japanese, British, and adapter brake lines

Manufactured using technology to prevent kinking and to retain shape while bending

All fittings are Stainless

Most populare SAE sizes

Many local parts stores rent out flaring tools free

Fit for: the unions measures approx. 0.6 x 0.9 inch, the nut measures approx. 0.67 x 3/8 inch, fit for most common inverted flare or double flare sizes for 3/16 inch tube, for use with 3/16 inch steel, poly coated or copper brake lines; Please confirm the size of the details according to the picture before purchasing

Size and material: both the unions and nuts are metric 3/8-24 threads (regular 3/16 inch tube fitting size), all brake line fittings are made of quality brass to prevent rust and plated for corrosion resistance

You will get: 12 pieces brake line fittings in the package, include 4 pieces unions and 8 pieces nuts, you can share them with your family and friends, these tubes unions are good fittings

Brake line adapter fitting is made from quality steel

Adapts -3an male to 3/16 inverted flare female and is a straight style fitting

Sold in one set of 20 pieces

Most common SAE inverted flare sizes

Steel Brake Line Tube Nuts for 3/16" Steel Brake Line Tubing Inverted Flare Standard 3/8"-24 thread

SAE 3/16 tube size x 3/8-24 thread size

Brake Line Fittings Kit for Inverted Flares — 19 Fittings for 3/16 Tube and 16 Fittings for 1/4 Tube — Zinc-Coated Adapter, Pack of 35

For 3/16" tube there are a total of 19 fittings (12 x 3/8"-24, 3 x 7/16"-24, 2 x 1/2"-20 and 2 x 9/16"-18)

For 1/4" tube there are 16 fittings included (12 x 7/16"-24, 2 x 1/2"-20 and 2 x 9/16"-18)

Package you will get: the package includes 12 pieces of metal brake line clips, well made and reliable, enough for you to replace your old or rusted one and apply to where you need; Meanwhile, you can share them with family, close friends, neighbors

Quality material: these car brake hose locks are made of quality steel, coming from exquisite workmanship, sturdy and serviceable, resistant to rust and corrosion, will not deform or break when installing, also not easy to fall off, which can serve you for a long time, you can rest assured to use

Easy to operate: this hose lock retainer clip is easy and convenient to install, you only need to attach the brake hose to a bracket connected to the steel brake line, saving you time and effort nicely

PACKAGE INCLUDE - MuHize upgraded Brake Fittings Replacement (Pack of 15): ① 5 x 3/8-24 threads unions; ② 10 x 3/8-24 threads nuts. Note：Both the unions and nuts is 3/8-24 threads (regular 3/16 inch tube fitting size) . Please check before shopping!

INVERTED FLARE UNION- Any 2 (3/16 inch) brake lines can be easy to joined with Muhize unions. both the sizes for unions and nuts are both 3/8-24 threads, which is the regular brake fitting size for 3/16 inch tube.

HIGHER QUALITY - MuHize brake fittings are made of durable brass with unique rust corrosion proofing technology.

Available in many different styles, including elbows, union, and tees

A large variety of tube diameters and pipe sizes available

Conveniently packaged in diverse piece counts to assist with both small and large projects

Auto Supplies Direct (70) Piece 3/16″ & 1/4″ Brake Line Fittings Kit (3/16″ and 1/4″ Tube Nuts, Unions, and Compression Fittings) for Cars and Trucks

Contains a (30) Piece 3/16″ Inverted Flare Brake Line Fittings Assortment, which Includes: (10) 3/16″ Short Tube Nuts, (10) 3/16″ Long Tube Nuts, and (10) 3/16″ Unions

Contains a (30) Piece 1/4″ Inverted Flare Brake Line Fittings Assortment, which Includes: (10) 1/4″ Short Tube Nuts, (10) 1/4″ Long Tube Nuts, and (10) 1/4″ Unions

Contain common air brake fitting styles

D.O.T Union:1/4"(4 pcs), 3/8"(4 pcs), 1/2"(4 pcs), 5/8"(2 pcs)

D.O.T Tee:1/4"(2 pcs), 3/8"(2 pcs), 1/2"(2 pcs); Bushing: 3/8" NPT Female x 1/2" NPT Male(2 pcs)

3/16" Tube (3/8-24 Thread, Inverted Flare) Brake Line Union Pack of 5 for Cars and Trucks

Convenient Pack of 5 - With a total of 5 pieces in each pack, you'll have enough unions for multiple connections or to keep extras on hand for future repairs.

Durable and Reliable - Made with professional quality brass, these unions are designed to last and provide a tight, leak-free seal for years to come.

-3 AN 3/8 x 24 Male to -3 AN Male Flare Bulkhead Tube FItting, Straight, with AN3 stainless lock nut

Material: SUS304 Stainless Steel

Mechanical joint bulkhead mounts on a wall or bulkhead to allow connections on either side of barrier

Most common SAE inverted flare sizes

Steel Brake Line Tube Nuts for 3/16" Steel Brake Line Tubing Inverted Flare Standard 3/8"-24 thread

SAE 3/16 tube size x 3/8-24 thread size

Package Included: The package includes 15 metal brake cable clips, well made and reliable enough to allow you to replace old or rusted ones and fit where you need them; at the same time, you can share with your family, close friends, neighbors

Material: The brake cable clamps are made of high quality metal, which is sturdy and durable. Exquisite workmanship, rust-proof and corrosion-resistant, it will not deform or break during installation, and it is not easy to fall off. It can serve you for a long time, and you can use it with confidence

Replacement Brake Clamps: This hose lock clamp is easy to install, just connect the brake hose to the bracket that connects to the steel brake line. Comes with 15 metal brake cable retainers, enough for your needs.

Many different types available, including long, dual and tube styles

Corrosion-resistant brass design for a long service life

Also suitable for a broad variety of industrial and commercial uses

【PREMIUM MATERIAL】：Our push in fittings are made of high quality CA360 brass,Certified by DOT and Air Brake system Requirements,with corrosion resistance, high temperature ductility and low permeability. Great for long time use, dot air brake fitting pneumatic fittings type: 1/4"

【TYPICAL APPLICATION】：The air brake fittings assortment kit can be used with air systems, copper tubing in air lines brake systems, which is perfect for automotive car or truck repair,air operated seats, operating gauges, air horns, heater controls, industrial workshops, daily garden or lawn mower repair, towing machine hose connection and air brake connections .

【EASY TO BE INSTALLED】: Union connect two tube with same OD. All quick connect fittings can be sealed by pushing the tube firmly into the fittings and they are also simple to be removed from the tube.

👉【Premium Material】: Our air line fittings are made of PBT Plastic, the air brake brass fittings DOT approved are made of high quality CA360 brass, with corrosion resistance, high temperature ductility and low permeability. Great for long time use.

👉【Quantity】: Unique dot air line quick connect fittings nylon tubing kit: The plastic tube fittings contain 28 pieces: 8 pcs Male straight push connectors, 6 pcs Straight tube unions. 6 pcs 90 degree Elbows. 4 pcs 90 degree Elbows NPT thread. 4 pcs Tube tees. The brass tube fittings contain 16 pieces: 5 pcs Male connectors. 5 pcs Male 90° elbows. 3 pcs Tube tees. 3 pcs Tube unions. Fit type: 1/2", 3/8", 1/4".

👉【Typical Application】: The push-to-connect fitting 1/4 inch are suitable for PU / PA / PE / PVC. The dot air fittings assortment can be used with air systems, and copper tubing in air brake systems. They are widely applied in automotive, manufacturing production lines, car or truck repair, industrial workshops, daily garden or lawn mower repair, towing machine hose connections and so on.

❤️ Application----Special design, suitable for 3/16 inch pipe.The brake tee is easy to install without additional modification, and can directly replace old or damaged ones.

❤️Advantages: compact size design, lightweight compatibility and powerful brake tee make it more reliable. And easy to ope e.Safe Working Pressure: 1841 PSI/ 127 BAR.

❤️Excellent material----Made of high-quality alloy material, strong and durable, not easy to wear. It has the characteristics of high strength and high hardness, is not easy to break, rust-proof, corrosion- , aging- , and has a long service life.

28 PCS (1/4", 3/8", & 1/2") D.O.T. Air Brake Line Fittings Brass Push to Connect Kit

Tee : 1/2" (2 Pcs), 3/8" (2 Pcs)

Union : 1/2" (2 pcs), 3/8" (2 pcs)

Direct replacement

Easy installation - no special tools required to install this exhaust hanger

Durable materials - quality materials for a long service life

Size information: the brake hose retaining clip measures about 28 x 27 mm/ 1.10 x 1.06 inches (length and width), and the inside dimension of the "U" is about 19 x 13 mm/0.75 x 0.5 inch(length and width), please make sure it is the size you need before purchasing

Quality material: these car brake hose locks are made of quality steel,resistant to rust and corrosion, will not deform or break when installing

Fitment: For cars, trucks, SUVs, motorcycles

Material:Ss 304

Color: As The Picture Shown

Size: M10 x 1.00mm Double Diagonal Banjo Bolt

【PREMIUM MATERIAL】：Our air brake fittings are made of high quality CA360 brass,Meets D.O.T FMVSS 571.106 ,SAE J1131 Air Brake system Requirements and Air Brake system Requirements,with corrosion resistance, high temperature ductility and low permeability. Great for long time use, dot air brake fitting pneumatic fittings type: 3/8" .

【EASY TO USE】: Union connect two tube with same OD. All dot air quick connect fittings can be sealed by pushing the tube firmly into the fittings and they are also simple to be removed from the tube.

【TYPICAL APPLICATION】：Air brake fittings assortment kit can be used with air systems, copper tubing in air lines brake systems, which is perfect for automotive car or truck repair,air operated seats, operating gauges, air horns, industrial workshops, air brake connections,towing machine hose connection and air brake connections or lawn mower repair.

👉【PREMIUM MATERIAL】: Our dot air brake fitting assortment is made of high quality CA360 brass, meets D.O.T FMVSS 571.106 and Air Brake System Requirements. With corrosion resistance, high temperature ductility and low permeability. Long service use, dot air brake fitting type: 1/8" 1/4", 3/8", 1/2", 5/8" .

👉【EASY TO INSTALL】: Our dot air line kit quicks disconnect simply push tubing in, need to use tools to fix loose parts to handle in tight places, so that use will be more firm and not easy to fall off. And pieces that contain a threaded end already have sealant pre applied to provide a secure connection.

👉【TYPICAL APPLICATION】: Air brake fittings assortment kit can be used with air systems, copper tubing in air lines brake systems, which is perfect for automotive car or truck repair,air operated seats, operating gauges, air horns, industrial workshops, air brake connections,towing machine hose connection and air brake connections or lawn mower repair.

【Compact Design】It adopts compact size design, light weight and easy to operate.

【Application】It is suitable for 3/16 inch pipe. Safe working pressure is 1841 PSI/ 127 BAR.

【Easy to Install】This is a replacement brake tee with a wide range of applications and good compatibility, stable and reliable, you can replace directly for old or broken one.

Direct replacement.Material:Steel

Easy installation - no special tools required to install this exhaust hanger

Durable materials - quality materials for a long service life

HIGH QUALITY: Quick connect air fittings kit are made of high-strength material, do not deform, do not rust, have Fine surface treatment, and are durable. with stainless steel lock claw and good steel washers. Dot air fittings for automotive cars or Lawn Mower Repair, Industrial Workshops, etc.

HIGH-PRESSURE RESISTANCE: Proof Pressure: 1.32Mpa, Dot air fittings can withstand strong pressure without tripping. Temperature Range: 0-60°C | 32～140°F. Fluid Type: air, Vacuum, 0~145Psi, 0-0.9Mpa.

EASY TO BE INSTALLED: Air line push to connect fittings is a simple push-in design. Release rings at the top could be pushed down easily when inserting the hose into the coupler and bouncing up immediately when taking out the hose, Convenient For Disassembly.

【PREMIUM MATERIAL】：Our DOT air brake fittings are made of high quality CA360 brass,Meets D.O.T FMVSS 571.106 , Air Brake system Requirements,with corrosion resistance, high temperature ductility and low permeability. Great for long time use, dot air brake fitting type: 1/4", 3/8", 1/2"，1/8", 5/8" .

【 AIR LINE NYLON TUBING KIT】:The air brake fittings contain 44 PCS. 12PCS DOT Union , 6PCS DOT Tee , 4PCS Bushing, 8PCS 90⁰ DOT Male Elbow Connector, 8PCS DOT Straight Male Connector , 4PCS 45⁰ DOT Male Elbow Connector , 2pcs Compression Fittings 1/4" tube x 1/4" NPT Male. Fitting types: 1/4", 3/8", 1/2",1/8",5/8". All in a durable yet lightweight plastic storage container with flip lock tabs, rust and secure.

【EASY TO INSTALL】: Our dot air fitting kit quicks disconnect simply push tubing in, need to use tools to fix loose parts to handle in tight places, so that use will be more firm and not easy to fall off.And pieces that contain a threaded end already have sealant pre applied to provide a secure connection.

Dsnaduo 3AN AN3 Male Flare to AN4 Pipe Male Stainless Steel Brake Hose Fitting Adapter Union Connector,Brake and Clutch Adapter Fitting

Material: Stainless steel 304

Commonly used to mate AN hose ends to NPT ports and lines.