Answer: A brake line tee with a mounting hole is a three-way junction fitting designed to split or route brake lines, fuel lines, or vacuum lines while providing a secure mounting point. It’s best for DIY enthusiasts and professional mechanics seeking a leak-resistant, easy-to-install connector that can be bolted to a chassis or mounting surface. The top picks below are chosen for universal compatibility with 3/16″ tubing and 3/8″-24 ports, solid mounting options, and durable brass or stainless steel construction.
| Product | Material | Mounting Bracket | Best For |
|---|---|---|---|
| SevnYoko 4 Pack 3-Way Brake Line Tee | |||
| Podavelle Stainless Steel 3AN Tee Block | |||
| Purthog 3/16 Brake Line Tee with Mounting Bracket | |||
| Wevdn 3-Way Brake Line Tee with Mounting Bracket | |||
| NHHC 3-Way Brake Line Tee with Bracket |
SevnYoko 4 Pack 3-Way Brake Line Tee

The SevnYoko three-way brass tee is designed for 3/16″ inverted flare tubes with 3/8″-24 threaded ports. It supports brake, fuel, vacuum, and liquid lines, making it a versatile option for many vehicle models. It includes a mounting bracket to prevent loosening and leakage, improving installation stability. Best for DIY upgrades and repairs where a bulk pack provides spares or multiple connections. A potential limitation is that compatibility focuses on 3/16″ tubing; verify line size before ordering.
Therwen 8 Pcs Brake Line Tabs with Mounting Holes

Therwen offers eight brake line mounting tabs with 3/16″ mounting holes and a 90-degree angle, built from iron with an electric black finish for corrosion resistance. These tabs are suitable for securing line tees, brackets, or junctions to a vehicle’s body or frame. They’re best for owners who need multiple secure mounting points and a simple, sturdy solution. A caution is that the tabs are basic mounting supports and do not include the tee itself, so pair with a compatible fitting.
Podavelle Stainless Steel 3AN Tee Block Fitting

The Podavelle 3AN (3/8-24 UNF) tee block is made from 304 stainless steel and includes a mounting tab. It’s commonly used for brake lines, clutch lines, turbo oil feeds, coolant, and fuel systems. Best for high-stress or heat-exposed environments where stainless steel offers superior corrosion resistance. Limitations include a higher cost and the need to confirm exact thread compatibility with your system.
Purthog 3/16 Brake Line Fitting Tee With Bracket

Purthog’s brass 3/16″ tee serves as a junction for brake circuits and can also support fuel and vacuum lines. It features a 3/8″-24 threaded interface and dimensions of about 2.0 inches long by 1.0 inch wide. It’s a compact, durable choice for tight-engine bay applications. Best for those prioritizing a compact footprint and straightforward drop-in replacement. Caution: please verify that 3/16″ tubing and 3/8″-24 ports match your vehicle’s components.
NHHC 3-Way Brake Line Tee With Bracket

NHHC provides a brass 3/16″ brake line tee with a mounting bracket, designed for universal car parts with a 3/8″-24 thread, and a compact 2.0 x 1.0 x 0.81 inch footprint. It’s best for general-purpose use across brakes, fuels, and other fluids where a robust, easy-to-install junction is needed. A limitation is that its compact size may restrict use in very crowded engine bays where additional clearance is required.
Wevdn 2 Pcs 3-Way Brake Line Tee Fitting

Wevdn offers a brass 3-way brake line tee with a mounting bracket and 3/8″-24 threaded ports. It emphasizes high-temperature resistance, corrosion protection, and a secure threaded connection to prevent leaks. Best for durability-focused installations and those who need reliable, long-term operation. Caution: check that the 3/8″-24 ports align with your system’s tubing and fittings before purchase.
Dorman 785-436D Brake Line Tee

Dorman’s brake line tee offers variety in styles, including inverted flare and three-way configurations. It provides a large selection of thread sizes for universal compatibility and convenient packaging for small or larger projects. Best for buyers who want a reputable aftermarket option with broad compatibility. Limitation: Dorman listings may require cross-checking with your exact vehicle model to ensure fit.
Buying Guide: Key Considerations
What size tubing does your system require? Most brake line tees use 3/16″ tubing with 3/8″-24 ports. Always verify inner diameter and thread size before purchasing to avoid mismatches.
Material matters. Brass offers good heat resistance and formability; stainless steel provides higher corrosion resistance in harsh environments, though at a higher cost. Choose based on exposure to moisture, heat, and budget.
Mounting provisions. A solid mounting bracket or mounting tab helps prevent loosening and leaks. Confirm the bracket’s compatibility with your vehicle’s chassis or mounting surfaces and whether additional fasteners are included or required.
Installation difficulty. Look for fittings that require minimal tools and allow quick, secure installation. DIY-friendly designs are ideal for home repairs, while some setups may benefit from professional installation in tight engine bays.
Application scope. Some tees support multiple fluids (brake, fuel, vacuum, coolant). Ensure the selected part matches your intended use and avoids cross-contamination between systems.
Frequently Asked Questions
- What is a brake line tee with mounting hole used for? It splits a line into multiple directions while providing a secured mounting point to reduce movement and leaks.
- What tubing size and thread size should I look for? Most common setups use 3/16″ tubing with 3/8″-24 threads; always verify compatibility with your lines and fittings.
- Is brass or stainless steel better? Brass is affordable and offers good heat tolerance; stainless steel lasts longer in harsh environments and resists corrosion.
- Can I install these myself? Many are DIY-friendly, requiring basic tools and the included mounting bracket; follow manufacturer instructions for proper torque and sealing.
- Will a mounting bracket prevent leaks? Yes, a secure bracket reduces vibration and loosening, which helps maintain a sealed connection and safer operation.
- Are these suitable for fuel lines as well? Some are designed for fuel, vacuum, or coolant lines in addition to brakes; confirm the intended fluid compatibility before use.