Ensuring your vehicle's braking system operates efficiently and reliably is paramount for safety. A critical component, the brake pressure relay, plays a vital role in modulating brake pressure. Selecting the correct replacement part guarantees optimal performance and peace of mind while driving.
Looking for the best Automotive Replacement Brake Pressure Relays?
Discover now our comparison of the best Automotive Replacement Brake Pressure Relays. It is never easy to choose from the wide range of offers. On the market, you will find an incalculable number of models, all at different prices. And as you will discover, the best Automotive Replacement Brake Pressure Relays are not always the ones at the highest prices! Many criteria are used, and they make the richness and relevance of this comparison.
To help you make the best choice among the hundreds of products available, we have decided to offer you a comparison of the Automotive Replacement Brake Pressure Relays in order to find the best quality/price ratio. In this ranking, you will find products listed according to their price, but also their characteristics and the opinions of other customers. Also discover our comparisons by categories. You won’t have to choose your products at random anymore.
No. 1
Mydracas 28146 Electric Vacuum Pump Switch & Relay Kit for Brake Booster - Normally Open Pressure Sensor with...
- 【Complete Control Kit for Your Brake Vacuum System】This bundle includes both the essential 28146 vacuum switch and the 28146 relay, providing a comprehensive solution to manage your electric vacuum pump. Ensures your brake booster receives consistent...
- 【Automatic Adjustment System】The vacuum pressure switch features a preset activation/deactivation point (typically 18-22 inHg). It automatically turns the pump on when vacuum drops and shuts it off once sufficient vacuum is reached, preventing the...
- 【28146 Relay for Circuit Protection】The included 28146 relay is designed to handle the high current draw of your electric vacuum pump. By using this relay, you protect your vehicle's wiring, ignition switch, and the vacuum switch itself from...
- 【 Easy Installation with Clear Wiring Guide】Installation is straightforward with the included relay wiring diagram. Terminals are clearly defined for connection to the vacuum switch, positive battery source, pump motor, and ground.
- 【Durable design】Both components feature robust construction.Built to withstand the harsh conditions under the hood, this kit offers a reliable, long-lasting upgrade for your braking system.
SaleNo. 2
Fudatong Air Brake Relay Traction Valve, Compatible with Volvo Bendix ATR-6, K078420 K...
- COMPATIBILITY: Direct replacement for Volvo Bendix ATR-6 air brake relay traction valve, matching part numbers K078420, 85135349, 21995886, 22342455, 22342457, 85134496
- FUNCTION: Designed for efficient air brake system control and traction management in heavy-duty trailer applications
- APPLICATION: Ideal for trailer components requiring reliable air brake relay valve systems with precise pressure control.
- INSTALLATION: Plug-and-play, easy to install. Features standard mounting configuration for straightforward replacement of existing traction valve components
- CONSTRUCTION: Built with heavy-duty materials to withstand demanding conditions in commercial trailer brake systems
No. 3
World American MWT 102626, Air Brake Relay Valve R-12 Type (4.0 PSI Crack Pressure 1/2"-Port 1 Supply...
- Designed as a direct replacement for Type R-12V air brake relay valves; features 4 delivery ports (1/2" NPT), 1 supply port (1/2" NPT), and 1 control port (1/4" NPT) with 4.0 PSI crack pressure.
- Optimized for heavy-duty truck and trailer air brake systems; supports fast relay response and consistent brake signal distribution.
- Built with durable, corrosion-resistant components; meets OE specifications for performance and reliability in harsh operating environments.
- Fully compatible with popular OEM and aftermarket units including Bendix, Haldex, Caterpillar, Freightliner, Mack, Navistar, and more.
- Includes 1 World American R-12 relay valve (MWT 102626); NPT-threaded ports, compliant with DOT regulations. Prop 65 warning included on packaging.
$40.99
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No. 4
Brake Light Timer Relay, Replacement 30 Second Brake Switch Fit for 12V, 24V, 36V, 48V Golf Cart Safety Boost
- 【Voltage Compatibility】This Volt Brake Light Timer Relay is for golf carts with 12 - 48V electrical systems. It works seamlessly on 12V, 24V, 36V, or 48V carts, offering a broad-spectrum solution
- 【30-Second Delay Function】After the driver releases the brake pedal, it keeps the brake light on for 30 seconds, then auto-shuts off. This boosts safety on the course by giving others more time to notice braking
- 【High-Quality】The brake light timer relay adopts high-quality electronic components that are corrosion-resistant and wear-resistant, adapting to the working environment of golf carts and extending their service life
- 【Protect Bulb】The brake light timer relay effectively reduces frequent flashing by minimizing the frequent start and stop of the brake light, thus protecting the brake bulb
- 【Easy Installation】Brake light delay relay adopts plug-in design, you can quickly swap out old or faulty relays, reducing downtime
No. 5
World American WA103010 Air Brake Relay Valve Type R14H Crack Pressure 4 PSI, Delivery Ports 2x 1/2" Supply...
- Heavy-duty R14H air brake relay valve with 4 PSI cracking pressure; 2 supply ports (3/4"), 2 delivery ports (1/2"), 1 control port (1/4"); NPT thread design for secure installation.
- Designed for dual service/delivery (2S/2D) air brake configurations; ensures quick brake response and smooth air transfer in commercial vehicles.
- Port sizes: balance port 1/8", control port 1/4", delivery port 1/2", supply port 3/4"; includes 2 delivery ports and 2 supply ports.
- Part Type: Air Brake Relay Valve; Taxonomy A: Brake Components, B: Air Brake Valves, C: Relay Valves, D: Type R14H; Core Group: 121RLV.
- Replaces Bendix 103010, Automann 170.103010, Navistar 1677540C, Tectran 14398, Wabco 9732870010; cross-compatible with major OEM part numbers.
$55.31
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No. 6
Mytee Products 2 Pack Heavy Duty R-12 Relay Valve - Air Brake Relay Valve Replaces 102626, Velvac...
- Replacement for Bendix R-12; Devery Ports: (4) 1/2"
- Supply Ports: 1/2"; Control Ports:1/4"
- Crack Pressure: 4 PSI; Core Group: 121RLV
- Vertical Devery Ports
- 18 MONTHS WARRANTY* - This product is covered for one year or completion of 100,000 miles since installation or 18 months after your purchase, whichever comes first. Please check below for complete information.
No. 7
World American WA65104 Air Brake Relay Valve Fits HD Trucks with R12 System Replaces Bendix 065104 Haldex...
- Air Brake Relay Valve Type R12 – World American SSA 065104 is a high-quality Type R12 relay valve designed for heavy-duty truck brake systems. Compatible with NPT-threaded ports and direct replacement for OE-style valves.
- Port Configuration – Equipped with 4 delivery ports (3/8"), a 1/2" supply port, and a 1/4" service (control) port. NPT thread ensures easy, leak-free installation on compatible air systems.
- Reliable Performance – Features 4 PSI cracking pressure and supports stable brake actuation under demanding road and load conditions. Ideal for quick response times in air brake systems.
- Direct Aftermarket Replacement – Replaces OEM units from Bendix, Haldex, Navistar, Automann, Freightliner, Mack, Meritor, Euclid, and others. Designed for exact fit and long-term reliability.
- Package Contents & Compliance – Includes one R12 relay valve (SSA 065104) in sealed packaging. Meets or exceeds OE standards.
$33.99
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No. 8
Professional Trailer Brake Module Control Tow Relay for Chevy Silverado G*MC Sierra 1500 2500
- Replace part number: 20904439, 25792959, 25848909, 25837945 15819418, 1R3434, 16267, 1R3434, 25848909
- Compatible Replacement for G*MC & Cadillac Vehicles - for 2008 - 2014 Escalade | 2008 - 2014 Escalade ESV | 2008 - 2013 Escalade EXT | 2008 - 2013 Avalanche | 2008 - 2013 Silverado 1500 | 2007 - 2014 Silverado 3500 HD | 2008 - 2014 Subruban...
- Enhanced Safety: Ensures continuous brake pressure on the trailer, preventing accidental movement when the vehicle is stationary
- Package Contents:1* Trailer Relay
- 【Brand Store】If the product is defective or damage upon arrival, or if you don't want it any more, or the product cannot fix your issue, please contact us immediately, we will provide assist to solve the problem ASAP
No. 9
ZUVELLO Air Brake Relay Valve Fit For 103028
- Replace Part Number: 103028, 034028, M-103028, AV103028, S-8255A, 170.103028, 745065430, 745103028N, AM170103028.
- Specifications: Delivery Port: (4) 1/2", Supply Port: 1/2", Control/Service Port: 1/4", Crack Pressure: 4 Psi, Core Group: 121Rvl, Balance Port: 1/8".
- Function: Designed to deliver or release air to the chambers when control air is delivered to it from the foot brake valve or other source.
- High Quality: The relay valve is made of high quality metal, which is resistant to rust and corrosion for long service life.
- Package Included: The set includes 1 brake relay valve and mounting bracket. This relay valve can feature inlet/exhaust valve cartridge replacement without line removal.
No. 10
Brake Light Timer Relay Replacement 30 Second Brake Switch Fit for 12V 24V 36V 48V Golf Carts
- Compatible Vehicle Models: Fit for 12V 24V 36V 48V Golf Carts
- Durable Construction: Utilizes high-quality components with corrosion resistance, wear resistance and outstanding vibration and high-temperature tolerance, ensuring long-term stable performance and service life, adapted to the operating environment of...
- 30 - Second Delay Function: When activated, the brake lights remain illuminated for 30 seconds after releasing the accelerator pedal before automatically turning off, this provides reaction time for following vehicles, enhancing safety
- Easy Installation: Designed as easy-to-install replacement parts, installation is simple and convenient, enabling quick replacement to save time
- Package Contents: 1 * Brake Light Timer Relay
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Last update on 2026-04-19 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best Automotive Replacement Brake Pressure Relays
Comparison Tips
When comparing different brake pressure relays, prioritize OEM-equivalent parts for guaranteed fit and function. Read customer reviews to gauge real-world performance and durability, paying attention to comments about ease of installation and longevity. Ensure the part number listed matches your vehicle's original component or a confirmed cross-reference. Consider the warranty offered by the manufacturer as an indicator of product confidence and a safeguard for your investment.Frequently Asked Questions
What is the main function of a brake pressure relay?
The primary function of a brake pressure relay is to control and adjust the amount of hydraulic pressure sent to the rear brakes. It helps prevent premature rear-wheel lock-up, ensuring safer and more stable braking.
How do I know if my brake pressure relay needs replacing?
Symptoms of a failing relay include uneven braking, a spongy brake pedal, or the rear wheels locking up too easily. A thorough brake inspection by a mechanic is the best way to diagnose issues.
Can I use a universal brake pressure relay?
While universal parts exist, it's generally recommended to use a relay specifically designed for your vehicle's make and model. This ensures proper fitment and optimal performance of your braking system.
Is replacing a brake pressure relay a DIY job?
Replacing a brake pressure relay can be a complex task that often requires bleeding the brake system. It is typically recommended for individuals with automotive repair experience or to be performed by a professional mechanic.
What is the difference between a brake pressure relay and a master cylinder?
The master cylinder generates the initial hydraulic pressure when you press the brake pedal. The brake pressure relay then modifies this pressure, specifically for the rear brakes, to optimize stopping power and stability.
How long do brake pressure relays typically last?
The lifespan of a brake pressure relay can vary depending on driving conditions and the quality of the part. However, they are designed to last for many years and thousands of miles, often outlasting other brake components.
