The Best Automotive Replacement Master Relays

Looking for the best Automotive Replacement Master Relays?

Discover now our comparison of the best Automotive Replacement Master 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 Master 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 Master 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.

SaleNo. 1

9038 Relay Bypass Switch, Relay Bypass Switch Kit, Replacement 9036 9037, Fit for Domestic GM BMW, Audi, Chrysler, 6-Pack, Black

Compatibility: 9038 replaces 9036 9037, suitable for most domestic, Japanese, Korean and German fuel pumps, window motors, headlight switches and other devices using automotive relays
Plug and Play: can be installed vertically or horizontally, just plug in the fuel pump relay position to directly control the fuel pump circuit, very convenient, saving a lot of time and money
New Upgrade: The shell is made of high-quality materials, dustproof and waterproof; the silver contacts have high conductivity to ensure continuous and stable operation of the power supply
Operating Range: Up to 20 amps continuous current, 30 amps surge current (12V), suitable for most car models on the market, please see the picture for specific models.
Products Include: 6* relay switches. Please check the OEM part number before purchasing and make sure your part number matches this part number to avoid purchasing the wrong product

SaleNo. 2

Lisle 69300 Master Relay Test Jump Set, One Size, Factory

Includes 8 Jumpers to fit most popular relays
Includes Test Lead Kit for easily and securely connecting Relay Test Jumpers to a multimeter
Terminal Leads with switch, fuse and power options provide easy access to check current or voltage on many fuses and relays used on vehicles today
Also allows testing of relay configurations not covered by eight Relay Test Jumpers, like Volkswagen, BMW and other European vehicles
Relay Puller Pliers easily remove electrical relays; weorks without piercing wires

No. 3

YUXIVCNE 9038 Fuel Pump Relay Bypass Master Kit - Pack of 6 Relay Tester Diagnostic Scan Tool Bypass Switch Kit - Replaces 9036 9037

Fitment: This relay bypass switch kit compatible with Audi 2004-2006, Compatible with BMW 1995-2006; Compatible with Volkswagen 1999-2005. Replacement for GM for Chrysler for Domestic for Korean. Replaces 9038, 9036, 9037.
Enhanced Control: The 9038 Relay Bypass Switch Kit provides independent control over vital automotive components which using relays such as fuel pumps, window motors, headlight switches, air conditioning compressors and cooling fans, streamlining the fuel injection testing process and allowing for precise monitoring.
Reliable Performance: Built for durability and functionality, this relay bypass switch kit offers powerful performance by running all 12V DC motors with the push of a switch. Controls relay circuit independent of “key on” systems, ensuring reliable operation for various automotive components.
Effortless Installation: Enjoy a easy setup with the plug-and-play design of this switch kit. Simply insert it into the fuel pump relay position to gain direct control over the fuel pump circuit, enabling quick and efficient electrical diagnosis.
Excellent Quality: This switch kit is made of Steady materials, ensuring reliability and durability to withstand long-term use in various conditions.

No. 4

Master-Bilt 100516042 Start Relay Embraco 02-72824 - Genuine OEM Replacement Part

Guaranteed Compatibility - OEM parts fit and function exactly like the original components, ensuring a perfect match
Higher Quality and Reliability - OEM parts are built to the same quality standards as the original components, reducing the risk of premature failure.
Safety Assurance - Genuine parts give you peace of mind that your equipment remains safe to use
Maintain Your Warranty - Using genuine OEM parts is less likely to void your equipment's warranty

No. 5

LEQUDUO 9038 Relay Tester, 9038 Diagnostic Scan Tool Fuel Pump Relay Bypass Master Switch Kit Replace 9036 9037, Pack of 6

These relay bypasses are great for electrical diagnostics, they help save a good amount of time in terms of narrowing down what could be wrong on a car; A must have for any mechanic's toolbox
Installation is pretty simple: just plug in the place of the fuel pump relay and direct control over the fuel pump circuit is realized in most domestic, Japanese, Korean and German applications
Operating range: Up to 20 amp continuous, 30 amp surge (12 V)
Package includes 6 pieces of relay bypasses

No. 6

Master-Bilt Compressor Relay 040-0166-19 C 03-14698 - Genuine OEM Replacement Part

Guaranteed Compatibility - OEM parts fit and function exactly like the original components, ensuring a perfect match
Higher Quality and Reliability - OEM parts are built to the same quality standards as the original components, reducing the risk of premature failure.
Safety Assurance - Genuine parts give you peace of mind that your equipment remains safe to use
Maintain Your Warranty - Using genuine OEM parts is less likely to void your equipment's warranty

SaleNo. 7

Jeseny 2 Pack Car 5 Pin 12V 30A Relay - High Performance Waterproof Stable Multi-Purpose Heavy Duty Standard Kit for Automotive Motor Replacement Accessories (Black)

✔ Specifications: You will receive 2/4 pieces of 5-pin 12V 30A relays, measuring approximately 1.41 x 0.94 x 0.63 inches/3.6 x 2.4 x 1.6 cm. The model number is JD1914-12V-30A and these relays are 5-plug. 30A 12V relays can be used to control circuits for components on vehicles with high amperage loads, such as headlights, fuel pumps, and cooling fans.
✔ Reliable Quality: The black housing of 12V auto relay is made of electrically insulated nylon material and the pins are made of brass with double plating treatment to prevent corrosion and fracture. And the base is sealed and waterproof, not easy to short circuit. Will provide you with long-term support, suitable for AC relay replacement and repair.
✔ Superior Performance: The housing is protected from harsh temperatures and hood conditions for extended wear. All parts are manufactured to exacting quality requirements. When your bike has a starting problem and won't start, when your car has a brake light problem, you can use relays to solve those problems.
✔ Easy Installation: The motor relay is suitable for normal automobile use and simple to operate, you just need to connect the relay with the wire, no other tools needed, convenient for your use and replace, allowing your components to work properly.
✔ Widely Used: Starter relays can be widely used in air conditioning compressor fan motors, starters, headlights, horns, ignition units, fog lights, headlights, fans, rear window defrosters, blower motors, cargo lights, running lights, oxygen (O2) sensor relays, fuel pump/disconnect relays and other accessories.

SaleNo. 8

2PCS 4 Pin Car Relay, 12V 40A Multi-Purpose Automotive SPST Standard Relay Kit, Heavy Duty Replacement Accessory for Auto Switches, Starters (4 Pins)

【Reliable Quality】:This car relay black shell is made of nylon material, sturdy and wear-resistant, with electrical insulation and flame retardant properties. The pins are made of brass, with good conductivity, and cold and heat resistance, to ensure that the long-term use of non-deformation, not rust, to maintain stable performance.
【Specification】:This car relay tester's dimensions are 2.05 × 1.12 × 1.12 inch, voltage: 12V DC, coil capacity up to 40A, coil power: 1.8 W, coil resistance: 80 Ω, operating temperature: -40 to+85℃. 85: Ground, 86: Trigger, 87: Output N/O, 87a: Output N/C.
【Easy to Use】:This car relay replacement is easy and quick to install and replace, no need to do complicated wiring work, just connect the corresponding wires.
【Application】:This car relay can be used for a 12V DC power supply for car setup, car audio system, security system, LED lights, headlights, and many other application scenarios. For example, car tail lights, headlights, air conditioning, engine compartment, reverse impact, electric water pump, electric fuel pump, trunk solenoid valve, electric cooling fan, shaving door handle solenoid valve, and other equipment.
【Package Include】:You will receive two 4-pin SPST car relay tester in sufficient quantity to meet your usage needs, it is a regular product for car modification. Please confirm the model number of the relay before purchase to make sure that the relay is suitable for your car.

No. 9

HQPASFY 9038 Fuel Pump Relay Bypass Master Kit 9037 Relay Bypass Switch Tester Compatible with Audi BMW Volkswagen GM

【Efficient Electrical Diagnostics】Simplify automotive electrical troubleshooting with the Fuel Pump Relay Bypass Master Kit. This essential tool allows you to bypass the fuel pump relay, providing direct control over the fuel pump circuit for quick and accurate diagnosis of electrical faults
【High-Quality Construction】Crafted from premium materials with high conductivity silver contacts, this kit ensures reliable performance and durability. It supports up to 20 amps continuous current and 30 amps surge (12V), making it suitable for various automotive applications
【Wide Compatibility】Compatible with a range of vehicles including GM, Chrysler, Korean, Domestic models, and specific Audi, Volkswagen, BMW, and Japanese vehicles from 1970 onwards. It replaces OEM part numbers 9036, 9037, and 9038
【Easy Installation】Designed for plug-and-play installation, simply insert the bypass kit into the fuel pump relay position to gain instant control over critical components such as fuel pumps, cooling fans, and more. No complex wiring or modifications required
【12 Months Warranty】HQPASFY's commitment to 'High Quality Product And Service For You' ensures that any quality issues are promptly addressed. Simply contact us via Amazon message, and we'll respond within 24 hours

No. 10

BLAU GRUN 4 Pin 12V 30A Multi-Purpose Automotive Relay - Heavy Duty Standard Relay for Car Motor, Universal Replacement Accessory

[Reliable Quality] The black shell is made of nylon material, which is electrical insulation, and the pin is made of brass, which can withstand cold and hot condition. Very durable and sturdy in use, no deformation and rust, perfectly made for long-term use.
[Specification] The size is 1.41 x 0.94 x 0.63 inch/ 3.6 x 2.4 x 1.6 cm approximately. Our 30A 12V relay can be used to control the circuits of components with high amperage loads on vehicle, such as headlights, fuel pumps and cooling fans.
[Easy to Use] Our motor relayis suitable for normal antomobile to use, simple operation, you only need to connect the relay and wire, no need other tools, very convenient and easy to use and replace, allow components work normally.
[Application] Our product can be applied to car tail light, engine compartment, electric cooling fans, electric water pumps, electric fuel pumps, shaved door handles solenoids, trunk solenoids and more equipment.
[Customer Service] You will receive 4 pieces 12V 30A 5 pin relays. We offer 12-month warranty for every order, you can buy with confidence. If you have any questions and concerns, please feel free to let us know, our team will respond asap!

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Last update on 2025-06-17 / Affiliate links / Images from Amazon Product Advertising API

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