Dorman 785-439D brake hydraulic line union joins two sections of brake line with a bubble flare connection. It is also called a brake line union and is used in brake line repairs.
- Bubble flare style for 3/16 in brake line
- M10-1.0 metric thread
- Steel body with a clear zinc finish
- 1.25 in long with a 0.5 in outside diameter
Quick facts
- Part: Dorman 785-439D brake hydraulic line union
- Material: Steel
- Condition: New
Fluid showing at a line joint, a soft or sinking brake pedal or a falling fluid level in the reservoir can mean a union has corroded or failed. A leaking caliper, a worn brake hose or a failing master cylinder can be behind these signs too, so find the cause before buying a union. Lost brake fluid affects stopping, so have a leak looked at promptly.
Fits
This union is sold by size, not by application, so match the line size, thread and length to the union being replaced. This listing is one union; order as many as the repair has line joints to connect.
Specifications
Fit and size
- Line inside diameter: 0.1875 in (3/16 in)
- Line outside diameter: 0.35 in
- Outside diameter: 0.5 in
- Thread size: M10-1.0 (metric)
- Length: 1.25 in
- Pieces per listing: 1
Build and materials
- Flare style: bubble flare
- Material: Steel
- Finish: clear zinc
- Condition: New
- Country of origin: India
In the box
One brake hydraulic line union.
Interchange: 73190
Product information is for general reference and may contain errors. See our Disclaimer.
Frequently Asked Questions
Will the Dorman 785-439D union work with my brake line?
Yes, if your line is 3/16 in bubble flare with an M10-1.0 thread. Dorman 785-439D is sold by size, so match the thread size and length to the union you are replacing.
Does the 785-439D brake hydraulic line union come as a single piece?
Yes. The package holds one brake hydraulic line union.
What is the Dorman 785-439D brake hydraulic line union made of?
Steel, with a clear zinc finish. The body is 1.25 in long with a 0.5 in outside diameter.
How can I tell a brake hydraulic line union is leaking?
A soft or sinking pedal, a brake warning light or a falling fluid level in the reservoir can be signs of a leak at a line joint. A shop can inspect and pressure-test the brake system.
Is 73190 the same as the Dorman 785-439D?
Yes. 73190 is listed as an interchange number for Dorman 785-439D, so it is a cross-reference for this union.
