Best Union Car Brake Fittings in 2026
Daisy
Last Updated: Jul 20, 2026
Daisy
Last Updated: Jul 20, 2026
* PickSmartly editors independently research, review, and endorse the top products through comprehensive data analysis. We may earn a commission for qualifying purchases made through our product links.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| thestopshop | 9.88 | ✅ | ✅ | ✅ |
All fittings are Stainless
Most populare SAE sizes
Many local parts stores rent out flaring tools free
Total of 19 fittings - 12 x 3/8"-24, 3 x 7/16"-2, 2 x 1/2"-20, 2 x 9/16"-18
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| thestopshop | 9.88 | ✅ | ✅ | ✅ |
3/8-24 Threads (standard 3/16" tube fitting size)
702x3 Weatherhead
Includes Mounting Bracket
Brass
One piece
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| thestopshop | 9.88 | ✅ | ✅ | ✅ |
Inverted flare
Metric 10x1 fittings and unions
Pack of 6
Used with 3/16" brake line tubing
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| thestopshop | 9.88 | ✅ | ✅ | ✅ |
These preflared stainless steel lines are perfect for the DYI or hot rod person. These lines are not vehicle specific, make sure to check your tubing size and fitting sizes.
These lines are grade 304 Stainless Steel and come with inverted double preflared ends along with 3/8"-24 standard 3/16" plated steel fittings & two 3/8"-24 female unions
Pack of 3, each piece is 32" long
Made in USA
No need to mess with flaring stainless steel with this pack
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| thestopshop | 9.88 | ❌ | ❌ | ❌ |
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| thestopshop | 9.88 | ✅ | ✅ | ✅ |
Inverted Flare Stainless Steel Brake Line Fittings For 3/16 Inch O.D. Tubing With 3/8"-24 Threads
Pack of 4
Stainless Steel, will never rust!
Most common size for 3/16" tube
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| thestopshop | 9.87 | ✅ | ✅ | ✅ |
For 3/16" Tube
10mm x 1 Threads
Stainless Steel, will never rust!
For imperial & bubble flares
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| thestopshop | 9.87 | ✅ | ✅ | ✅ |
For 1/4" tube
All fittings are 7/16"-24
Stainless Steel, will never rust!
Pack of 12
Most common size for 1/4" tube
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| thestopshop | 9.88 | ✅ | ✅ | ✅ |
This kit has a total of 20 fittings all for 1/4" tube
All fittings are for ISO / Bubble flare style in metric
Fittings are coated for corosion resistant
Sizes: 10 - 12x1mm, 2 - 11x1mm, 2 - 12x1.25mm, 2 - 12x1.5mm, 2 - 12x1.75mm, 2 - 13x1.5mm
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| thestopshop | 9.88 | ✅ | ✅ | ✅ |
All fittings are Stainless
Most populare SAE sizes
Many local parts stores rent out flaring tools free
Includes: 12 standard 7/16"-24 fittings, 2: 1/2"-20 and 2: 9/16"-18
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| thestopshop | 9.88 | ❌ | ❌ | ❌ |
For 3/16" tubing
0.8" overall length and .06" thread length
3/8"-24 thread pitch (most common for 3/16" tubing)
Stainless Steel, will never rust!!
Pack of 10
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| thestopshop | 9.88 | ❌ | ❌ | ❌ |
Included for 3/16" Brake Line: Inverted Flare Fittings 12 - 3/8"-24, 3 - 7/16"-24, 2 - 9/16"-18, 2 - 1/2"-20. Inverted Flare Fittings Metric 10 - 10x1mm. Bubble/ISO Flare Fittings 10 - 10x1mm, 2 - 11x1.5mm, 2 - 12x1mm, 2 - 13x1.5mm, Inverted Flare Unions 2 - 3/8"-24, Inverted Flare Unions Metric 2 - 10x1mm, Bubble/ISO Flare Unions 2 - 10x1mm, Inverted Flare 3 Way Tee Block 1 - 10x1mm, 1 - 3/8"-24, Brake Line Clips 10 - 3/16" rubber insulated
Included for 1/4" Brake Line: Inverted Flare Fittings 12 - 7/16"-24, 2 - 9/16"-18, 2 - 1/2"-20, Inverted Flare Unions 2 - 7/16"-24, Inverted Flare 3 way Tee Block 1 - 7/16"-24, Brake Line Clips 10 - 1/4"
The most complete brake line hardware kit for 3/16" & 1/4" tubing
Total of 92 pieces
Coated for corrsion resistance
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| thestopshop | 9.88 | ✅ | ✅ | ✅ |
Included: 3/16" Fittings Inverted Flare 12 - 3/8"-24, 3 - 7/16"-24, 2 - 9/16"-18, 2 - 1/2"-20. Inverted Flare 10 - 10x1mm. Bubble/ISO Flare 10 - 10x1mm, 2 - 11x1.5mm, 2 - 12x1mm, 2 - 13x1.5mm
Included: 1/4" Fittings Inverted SAE style 12 - 7/16"-24, 2 - 1/2"-20, 2 - 9/16"-18. Bubble/ISO metric 10 - 12x1mm, 2 - 11x1mm, 2 - 12x1.25mm, 2 - 12x1.5mm, 2 - 12x1.75mm, 2 - 13x1.5mm
Coated for corrosion resistance
Total of 81 fittings
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| thestopshop | 9.88 | ❌ | ❌ | ❌ |
This fitting pack includes 36 fittings for 3/16" & 1/4" brake line tube
These fittings are all metric and used for ISO/Bubble style flares
They are all coated for corosion resistance
Sizes for 3/16 Tube: 10 - 10x1mm, 2 - 11x1.5mm, 2 - 12x1mm, 2 - 13x1.5mm
Sizes for 1/4" Tube: 10 - 12x1mm, 2 - 11x1mm, 2 - 12x1.25, 2 - 12x1.5mm, 2 - 12x1.75mm, 2 - 13x1.5mm
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| thestopshop | 9.88 | ❌ | ❌ | ❌ |
Included for 3/16" Tube: 12 - 3/8"-24, 3 - 7/16"-24, 2 - 1/2"-20 and 2 - 9/16"-18
Included for 1/4" Tube: 12 - 7/16"-24, 2 - 1/2"-20 and 2 - 9/16"-18
All Inverted flare and SAE
All Stainless Steel
Total of 35 Fittings
Here is the list of top-rated brands that were evaluated by PM.
| Brand | Count |
|---|---|
| The Stop Shop | 15 |
We've carried out a comprehensive analysis of 885 reviews on car brake fittings, using our selection criteria to identify the best options in the automotive replacement parts. Our findings reveal that most customers typically select car brake fittings priced around $24.92, with top brands including wypabiqis, auto supplies direct, mytee products, legines, the stop shop, s.u.r. and r auto parts, 4lifetimelines and frienda and allstar
Our team of expert editors reviewed these high-quality items and handpicked the top 15 car brake fittings for your consideration. We've also done extensive research on numerous sellers, identifying the best ones in the automotive replacement parts category. These include wypabiqis, auto supplies direct, mytee products (part of mytee inc.), legines, thestopshop, jbtools, 4lifetimelines and fiada us and fastcatmachine .
We are dedicated to assisting our users in finding the right fittings Products based on their needs, saving them considerable time when choosing which car brake fittings to buy. We take pride in the number of satisfied users we've helped through our thorough and insightful reviews.
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