Hydraulic Brake Line Lock Manual Park Lock for Cars & Trucks

Hydraulic Brake Line Lock – Manual Park Lock Pressure Holder for Cars & Trucks

Take full control of your vehicle's braking system with this heavy-duty Hydraulic Brake Line Lock. Designed for cars and trucks with disc or drum brakes, this compact iron-bodied unit uses hydraulic line pressure to hold your brakes securely in place — no foot pressure required. Whether you're performing brake work, doing track prep, or need a reliable manual hold, this brake lock delivers consistent, stable performance.

Made in Mainland China.

Key Features

• Universal Fitment: Compatible with cars and trucks using disc or drum brake systems.
• Hydraulic Pressure Hold: Locks brake pressure via the hydraulic line — no mechanical ratchets or friction pads needed.
• High-Quality Iron Construction: Built to meet strict material standards for long-lasting reliability and stable performance.
• Spare Sealing Ring Included: Comes with one extra sealing ring for easy future maintenance.
• Installation Instructions Included: Step-by-step guide makes setup straightforward even for first-timers.
• Compact & Lightweight: Small footprint makes it easy to mount in tight spaces.

Specifications

How to Operate

1. Step on the brake pedal to build hydraulic pressure.
2. Push down the knob on the Brake Lock to engage the hold.
3. Release the foot brake — the system remains locked.
4. To release: press the foot brake again and the lock opens automatically.

Installation Guide

1. Mount the brake lock in a suitable location using the two provided mounting holes.
2. Inlet (1/8 in NPT): Connect to the master brake cylinder. Use the included 3/16 in fitting if needed.
3. Outlet (1/8 in NPT): Connect to the rear brakes. Use the included 3/16 in fitting if needed.

Package Includes

• 1 × Hydraulic Brake Line Lock
• 1 × Spare Sealing Ring
• 1 × Installation Instruction Sheet
• 2 × 3/16 in Brake Line Fittings

Important Notes

• ⚠️ Not intended for emergency braking, unintended use, or extended long-duration brake holds.
• Please allow ±0.5–1 cm variance due to manual measurement.
• Actual product color may vary slightly from images due to monitor display differences.

For general automotive safety guidance, visit the U.S. Consumer Product Safety Commission (CPSC) for product and vehicle safety standards.

Frequently Asked Questions

Q: Is this hydraulic brake line lock compatible with both disc and drum brake systems?

A: Yes — this brake line lock is designed to work with both disc and drum brake systems on cars and trucks. The 1/8 in NPT inlet and outlet ports, along with the included 3/16 in brake line fittings, give you flexible compatibility across a wide range of vehicles.

Q: How does the hydraulic brake line lock hold pressure without the foot pedal?

A: Once you step on the brake pedal to build hydraulic pressure in the line, pressing down the lock knob traps that pressure, keeping the brakes engaged. The lock releases automatically as soon as you press the brake pedal again — no manual release lever needed.

Q: Can I install this brake line lock myself, or do I need a professional?

A: The unit comes with an installation instruction sheet and the process involves connecting it inline between the master brake cylinder and the rear brakes using the two NPT ports. Many DIY enthusiasts install it successfully, but if you are not familiar with hydraulic brake line work, we recommend having a qualified mechanic perform or verify the installation to ensure brake system integrity.

Q: What is the inlet/outlet thread size, and are fittings included?

A: Both the inlet and outlet ports are 1/8 in NPT (National Pipe Thread). The package includes two 3/16 in brake line fittings so you can adapt to standard brake line sizes right out of the box.