Best Automotive Replacement Brake Fittings Deals of Oct 2026

Updated October 28, 2026Our site contains affiliate links for which we may be compensated.
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Ailbiuko 100Pcs 3/16" 1/4" Brake Line Fittings Kit(Nut and Union) | Brake Line Fitting Assortment(3/8 Inch-24 Threads,7/16 Inch-24 Thread Nuts and Unions,1/2 Inch-20,9/16 Inch-18 Thread Nut)

VALUE PACK: This 100 Pcs Fittings kit for 3/16” & 1/4" Brake Line: 40 x 3/16" (3/8-24) Inverted Tube Nut; 6 x 3/16” (7/16-24) Inverted Tube Nut; 4 x 3/16” (1/2-20) Inverted Tube Nut; 4 x 3/16"(9/16-18) Inverted Tube Nut;4 x 3/16" (3/8-24) Inverted Tube Union;30 x 1/4”(7/16-24) Inverted Tube Nut; 4 x 1/4”(1/2-20) Inverted Tube Nut; 4 x 1/4”(9/16-18) Inverted Tube Nut; 4 x 1/4”(7/16-24) Inverted Tube Union.These fittings are all neatly placed in the box for easy access
PREMIUM MATERIAL: These brake line fittings are made from high-quality material to prevent rust and are plated for enhanced corrosion resistance, offering high ductility at high temperatures. The rear brake line inverted flare nuts and unions are durable and strong for long-term use
MULTIPLE SIZES: The unions and nuts have 4 sizes: 3/8-24 threads,7/16-24 threads, 1/2-20 threads, 9/16-18 threads (regular 3/16 & 1/4 inch tube fitting size). Match more application scenarios and meet your needs
EASY TO INSTALL: Any 2 brake lines can be easily connected to the brake line adapter fittings. First, clean the surface of the brake pipe. Then, put nuts on each end of the two brake lines, and finally connect the two nuts with the brake line union connector fitting, and tighten it with a wrench to fix it
WIDELY APPLICATION - This kit commonly fits regular inverted flare/ double flare sizes for 3/16 and 1/4 inch brake line tubes. It can also be used for the fuel system and hydraulic brake system of a car, truck, or SUV
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19% Off

Tnisesm 102Pcs 3/16" & 1/4" Brake Line Fittings Assortment Kit,3/8 Inch-24 Threads Nuts and Unions,7/16Inch-24,1/2 Inch-20,9/16 Inch-18,7/16 Inch-24 Threads Nuts and Unions

Complete Set: This 102 Pcs Fittings kit for 3/16"& 1/4" Brake Line: 42 x 3/16”(3/8-24) Inverted Tube Nut; 6 x 3/16”(7/16-24) Inverted Tube Nut; 4 x 3/16”(1/2-20) Inverted Tube Nut; 4 x 3/16”(9/16-18) Inverted Tube Nut; 4 x 3/16”(3/8-24) Inverted Tube Union. 30 x 1/4”(7/16-24) Inverted Tube Nut; 4 x 1/4”(1/2-20) Inverted Tube Nut; 4 x 1/4”(9/16-18) Inverted Tube Nut; 4 x 1/4”(7/16-24) Inverted Tube Union.These fittings are all neatly placed in the box for easy access
Premium Material: Brake line fittings are made of durable material with unique rust corrosion proofing technology.The rear brake line inverted flare nuts and unions are durable and strong for long-term use
Multiple Sizes: The unions and nuts have 7 sizes: 3/8-24 threads, 7/16-24 threads, 1/2-20 threads, 9/16-18 threads (regular 3/16 & 1/4 inch tube fitting size). Match more application scenarios and meet your needs
Easy To Install: Any two brake lines can be easily connected to the brake line adapter accessory. First, clean the surface of the brake line. Then, place a nut onto the end of each of the two brake lines. Finally, connect the two nuts to the adapter fitting and tighten them securely using a wrench
Widely Application:This kit is typically compatible with 1/4-inch &3/16-inch brake line tubing for standard inverted flare/double flare fittings. It can also be used in fuel systems and hydraulic brake systems of cars, trucks, or SUVs.
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3-Way Brake Line Tee with Mounting Bracket,Brass Brake Line Fittings 3/16" for 3/8"-24 Threads Maintaining Brake System,Universial Brake Line Fittings for Fuel Line,Liquid Line

【Brake Line Tee】3/16 brake line tee is mainly used for the normal operation of the automobile brake system, not only limited to brake lines, but also applies to a variety of liquids, fuels, vacuum lines. It plays an important role of connection in various parts of the automobile.
Product Specification: Brake line tee size is 2.0*1.0*0.81 inches, inverted flare tee fitting size is 3/16 inches, thread diameter 3/8 inches, designed with universal car part size. Please check the compatible size information and actual vehicle information before purchase to prevent size mismatch
Premium Brass: The main material of 3/16 brake line fitting is premium brass. Brass material has high strength, strong stability, high heat resistance, and is not easy to be deformed and desensitized in daily use, which can favorably promote the normal operation of the vehicle braking system and keep driving safety
Fastener Fixing: We upgraded the brass brake line tee fittings through user suggestions, and added the snap to fix the brake line tee during production, the snap connects the bracket to the tee to avoid loosening, thus reducing the risk of connector block loosening and misalignment to give you a sense of security
Easy Installation: Our 3-way brake pipe fittings are a direct replacement for damaged or old brake pipe fittings. Simple to install, no extra steps required, easy to use for inexperienced people. Simply connect the brake line tee to a 3/16-inch automotive brake line or fuel line, fluid line and tighten to secure
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3/16 Brake Line Pressure Fittings, 12 Pieces 3/8 Inch Brake Line Fittings | 24 Threads Brass Brake Line Fitting Assortment for 3/16 Inch Brake Line Tube (4 Unions, 8 Nuts)

High Quality Material: Brake line fitting is made of high quality brass with anti-rust and anti-corrosion technology, ductile at high temperatures and low magnetic properties. Brake pipe fitting bubbles are strong and reliable for long term use
Package and Size: Package contains 12 brake line couplers, including 4 fittings and 8 nuts, the fittings and nuts are 3/8-24 threads (regular 3/16 inch pipe fitting size). Please confirm the size details according to the picture before purchase
Inverted and Double Flared Union: Any 2 (3/16-inch) brake lines can be easily connected to brake line adapter fittings for common inverted flare and double flare sizes for 3/16-inch steel, poly-coated or copper brake lines
Easy to Install: First clean the surface of the brake pipe, then put nuts on each end of the two brake lines, and finally connect the two nuts with the brake line union connector fitting, and tighten it with a wrench to fix it
Widely Compatible: 3/8-24 threaded brake fittings typically fit all common inverted flare/double flare sizes of 7/16-inch brake line tubing. These 7/16-inch brake line unions are great accessories to share with your family and friends
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Ailbiuko 100Pcs 3/16" Brake Line Fittings Kit,Nut and Union | 3/16 Inch Brake Line Fitting Assortment(3/8 Inch-24 Threads Nuts and Unions,7/16 Inch-24,1/2 Inch-20,9/16 Inch-18 Thread Nut)

VALUE PACK: This 100 Pcs Fittings kit for 3/16” Brake Line: 60 x 3/16" (3/8-24) Inverted Tube Nut; 16 x 3/16” (7/16-24) Inverted Tube Nut; 8 x 3/16” (1/2-20) Inverted Tube Nut; 8x 3/16"(9/16-18) Inverted Tube Nut;8 x 3/16" (3/8-24) Inverted Tube Union. These fittings are all neatly placed in the box for easy access
PREMIUM MATERIAL: These brake line fittings are made from high-quality material to prevent rust and are plated for enhanced corrosion resistance, offering high ductility at high temperatures. The rear brake line inverted flare nuts and unions are durable and strong for long-term use
MULTIPLE SIZES: The unions and nuts have 4 sizes: 3/8-24 threads,7/16-24 threads, 1/2-20 threads, 9/16-18 threads (regular 3/16 inch tube fitting size). Match more application scenarios and meet your needs
EASY TO INSTALL: Any 2 brake lines can be easily connected to the brake line adapter fittings. First, clean the surface of the brake pipe. Then, put nuts on each end of the two brake lines, and finally connect the two nuts with the brake line union connector fitting, and tighten it with a wrench to fix it
WIDELY APPLICATION - This kit commonly fits regular inverted flare/ double flare sizes for 3/16 inch brake line tubes. It can also be used for the fuel system and hydraulic brake system of a car, truck, or SUV
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on Amazon.com
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25% Off

Tnisesm 40Pcs Brake Line Fittings Kit, 3/16" & 1/4" Inverted Flare Nuts and Unions Assortment, SAE 3/8"-24 7/16"-24 1/2"-20 9/16"-18 Threads for Brake System Fuel Line

40-Piece Essential Kit for 3/16″ & 1/4″ Brake Lines : Includes 3/16″ inverted tube nuts (3/8″-24, 7/16″-24, 1/2″-20, 9/16″-18) and unions (3/8″-24), plus 1/4″ nuts (7/16″-24, 1/2″-20, 9/16″-18) and unions (7/16″-24). This brake line fitting kit provides the most commonly used sizes for routine repairs without paying for pieces you may never need. All neatly organized in a compact case
Rust-Resistant Plated Steel : Made from durable steel with a corrosion-resistant plating, these brake line adapter fittings hold up against moisture, road salt, and high-temperature engine bay conditions. Designed for long-term reliability in brake and fuel line applications
Covers 4 Standard SAE Thread Sizes : 3/8″-24, 7/16″-24, 1/2″-20, and 9/16″-18 threads. Works with standard 3/16″ and 1/4″ inverted flare or double flare tubing. Important: SAE standard – not compatible with metric brake line fittings. Confirm your vehicle’s thread type before ordering
Simple DIY Installation : Clean the tube ends, slide the correct nut onto each brake line, then connect both lines using the union fitting. Tighten with a standard wrench. No special tools required, making this 3/16″ and 1/4″ brake line fitting assortment a practical choice for home mechanics and professionals alike
Wide Use for Cars, Trucks & SUVs – Suitable for hydraulic brake systems, fuel lines, and transmission cooler lines. Whether you need a 1/4 brake line fitting for a truck repair or a 3/16 brake line fitting for a car, this kit covers common scenarios.ideal for occasional repairs or as a starter kit
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1/4 Brake Line Pressure Fittings, 12 Pieces 7/16 Inch Brake Line Fittings | 24 Threads Brass Brake Line Fitting Assortment for 1/4 Inch Brake Line Tube (4 Unions, 8 Nuts)

High Quality Material: Brake line fitting is made of high quality brass with anti-rust and anti-corrosion technology, ductile at high temperatures and low magnetic properties. Brake pipe fitting bubbles are strong and reliable for long term use
Package and Size: Package contains 12 brake line couplers, including 4 fittings and 8 nuts, the fittings and nuts are 7/16-24 threads (regular 1/4 inch pipe fitting size). Please confirm the size details according to the picture before purchase
Inverted and Double Flared Union: Any 2 (1/4-inch) brake lines can be easily connected to brake line adapter fittings for common inverted flare and double flare sizes for 1/4-inch steel, poly-coated or copper brake lines
Easy to Install: First clean the surface of the brake pipe, then put nuts on each end of the two brake lines, and finally connect the two nuts with the brake line union connector fitting, and tighten it with a wrench to fix it
Widely Compatible: 7/16-24 threaded brake fittings typically fit all common inverted flare/double flare sizes of 1/4-inch brake line tubing. These 1/4-inch brake line unions are great accessories to share with your family and friends
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Ailbiuko 200 Pcs Brass DOT Air Brake Line & Compression Fittings Kit | 1/4" 1/8" 3/8" 1/2" NPT Air Nylon Tube Fittings,Push To Connect Fittings Quick Connect Air Hose Fittings Assortment Kit

3 TYPES OF BRASS FITTINGS: This set includes DOT push-to-connect fittings, compression nylon tube fittings, and brass pipe fittings. It can be used for maintenance work in various scenarios, such as air brake systems and pipelines, to meet most of your needs
200PCS DOT FITTINGS SET: 30Pcs DOT push-to-connect fittings:7pcs straight male connector,7pcs 90°male elbow,6pcs union connector,4pcs union tee,4pcs 45°male elbow,2pcs schrader valve;123Pcs DOT compression nylon tube fittings:7pcs straight male connector,7pcs 90°male elbow,6pcs union connector,4pcs union tee,4pcs 45°male elbow,95pcs sleeve ferrules;45Pcs Brass pipe fittings:6pcs hex coupling,6pcs hex nipple,6pcs hex bushing,6pcs extension adapter,3pcs 90° street elbow,6pcs hex plug,12pcs socket plug;1pc 4m teflon tape;1pc tube cutter
PREMIUM MATERIAL: These fittings are made of high-quality CA360 brass and meet D.O.T FMVSS 571.106, Air Brake system Requirements, with corrosion resistance, high-temperature flexibility, and low permeability
PRESSURE RANGE: Airline fittings have pressure resistance, making them less likely to trip. Air brake fittings working pressure from vacuum max to 300 PSI. Temperature Range: -40° F to +250° F(Note: see tubing manufacturer’s recommendations for pressure and temperature limitations)
EASY TO INSTALL: Our 200pcs fitting kit is easy to use in air systems and pipe connections. You need to use tools to fix loose parts to handle in tight places so that they will be firmer and not easily fall off. Some pieces that contain a threaded end already have sealant pre-applied, and we send Teflon tape as a gift to provide a secure connection
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Ailbiuko 100Pcs 3/16" 1/4" Brake Line Fittings Kit(Nut and Union) | Brake Line Fitting Assortment(3/8 Inch-24 Threads,7/16 Inch-24 Thread Nuts and Unions,1/2 Inch-20,9/16 Inch-18 Thread Nut)

VALUE PACK: This 100 Pcs Fittings kit for 3/16” & 1/4" Brake Line: 40 x 3/16" (3/8-24) Inverted Tube Nut; 6 x 3/16” (7/16-24) Inverted Tube Nut; 4 x 3/16” (1/2-20) Inverted Tube Nut; 4 x 3/16"(9/16-18) Inverted Tube Nut;4 x 3/16" (3/8-24) Inverted Tube Union;30 x 1/4”(7/16-24) Inverted Tube Nut; 4 x 1/4”(1/2-20) Inverted Tube Nut; 4 x 1/4”(9/16-18) Inverted Tube Nut; 4 x 1/4”(7/16-24) Inverted Tube Union.These fittings are all neatly placed in the box for easy access
PREMIUM MATERIAL: These brake line fittings are made from high-quality material to prevent rust and are plated for enhanced corrosion resistance, offering high ductility at high temperatures. The rear brake line inverted flare nuts and unions are durable and strong for long-term use
MULTIPLE SIZES: The unions and nuts have 4 sizes: 3/8-24 threads,7/16-24 threads, 1/2-20 threads, 9/16-18 threads (regular 3/16 & 1/4 inch tube fitting size). Match more application scenarios and meet your needs
EASY TO INSTALL: Any 2 brake lines can be easily connected to the brake line adapter fittings. First, clean the surface of the brake pipe. Then, put nuts on each end of the two brake lines, and finally connect the two nuts with the brake line union connector fitting, and tighten it with a wrench to fix it
WIDELY APPLICATION - This kit commonly fits regular inverted flare/ double flare sizes for 3/16 and 1/4 inch brake line tubes. It can also be used for the fuel system and hydraulic brake system of a car, truck, or SUV
Check Price
on Amazon.com
Disclaimer: While we make every effort to ensure accuracy, we cannot guarantee that all product specifications, pricing, discounts, and details are complete or error-free. Because information is subject to change, we recommend verifying all details directly with the retailer prior to making a purchase. As an Amazon Associate, we earn from qualifying purchases.

10 Automotive Replacement Brake Fittings deals are available from: Amazon, starting from $6.89.

The biggest discount we found is 25% on Tnisesm 40Pcs Brake Line Fittings Kit, 3/16" & 1/4" Inverted Flare Nuts and Unions Assortment, SAE 3/8"-24 7/16"-24 1/2"-20 9/16"-18 Threads for Brake System Fuel Line at Amazon.

The lowest price we found is $6.89 while the highest is $129.99. Prices for the best Automotive Replacement Brake Fittings deals average at $25.95.

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