Best Fuel Pump Relay Testers To Fix Car Stalls

What are the best fuel pump relay testers?
We highlight the top 10 options so you can quickly bypass pump failures and find the perfect kit for your repairs.

Fuel pump failure is a major headache. Bypass switches solve the problem instantly. You gain total control over repairs.
One user tested a bad pump in minutes. They skipped the costly diagnosis fee.
Stop guessing at the root cause. We curate the top relay testers for you. Read on to find your ideal kit.

List of Top 10 Fuel Pump Relay Testers

Title	Best For	Price
RVMARINEPAT Relay Bypass Switch 9038 Relay Tester Kit Diagnostic Tester Scan Tool & Fuel Pump Relay Bypass Master Kit Replaces 9036 9037 Compatible with Domestic GM BMW Audi Chrysler 6-Pack	This tool is perfect for car mechanics and DIY drivers. It saves time on every job.	View on Amazon (paid link)
Weasch 9038A Automotive Relay Bypass Switch Relay Tester Kit 12V 6-Pack	Pros and home folk love this kit. It fits most cars and holds 20 amps safe.	View on Amazon (paid link)
Weasch 9038 Relay Bypass Switch, Relay Tester, Fuel Pump Bypass Switch Kit, Pack of 6 (9038 W/O Wire)	Car owners and pros will love this tool for easy fuel pump tests. It lets you fix cars fast so you can save time and get back on the road.	View on Amazon (paid link)
9038A Relay Bypass Switch Kit, 6-Pack, Black	The 9038A Relay Bypass Switch Kit is perfect for car enthusiasts and mechanics. It lets you control fuel pumps and other devices easily, making testing and repairs simple.	View on Amazon (paid link)
YUXIVCNE 9038 Fuel Pump Relay Bypass Master Kit – Pack of 6 Relay Tester Diagnostic Scan Tool Bypass Switch Kit – Replaces 9036 9037	This YUXIVCNE 9038 Fuel Pump Relay Bypass Master Kit is perfect for car owners and mechanics who need to test and control fuel pumps and other 12V DC motors easily. It’s great for quick fixes and reliable performance in Audi, BMW, Volkswagen, GM, Chrysler, and Korean vehicles.	View on Amazon (paid link)
9038A Relay Bypass Switch Kit with Precision Amp Loop (6-Pack) & Relay Puller Pliers, Heavy-Duty Fuel Pump Relay Tester, Accurate Current Loop Circuit Diagnostic Tool for 12V Automotive Motors	This 9038A Relay Bypass Switch Kit is perfect for auto mechanics and DIY car enthusiasts. It’s a must-have tool for quick and accurate electrical diagnostics.	View on Amazon (paid link)
EATAKWARD 6Pcs 9038A Relay Bypass Switch Kit, Relay Tester Fuel Pump Bypass Tool, Replacement for Most Domestic/Japanese/Korean/German Vehicles	This EATAKWARD Relay Bypass Switch Kit is perfect for car owners and mechanics who need a quick and reliable way to test and control automotive relays. It’s ideal for anyone working on fuel pumps, headlights, or window motors in most domestic, Japanese, Korean, or German vehicles.	View on Amazon (paid link)
LEQUDUO 9038 Relay Tester, 9038 Diagnostic Scan Tool Fuel Pump Relay Bypass Master Switch Kit Replace 9036 9037, Pack of 6	This LEQUDUO 9038 Relay Tester is perfect for mechanics and DIY car enthusiasts. It’s a must-have tool for quick electrical diagnostics, saving time and effort in fixing car issues.	View on Amazon (paid link)
JAMHER 6Pcs 9038 Relay Bypass Tester Kit, Diagnostic Scan Tool	This JAMHER 6Pcs 9038 Relay Bypass Tester Kit is perfect for busy mechanics and DIY enthusiasts. It’s ideal for anyone who needs to quickly diagnose electrical issues in Audi, BMW, Volkswagen, GM, Chrysler, and more.	View on Amazon (paid link)
Fuel Pump Relay Bypass Master Kit	This Fuel Pump Relay Bypass Master Kit is perfect for mechanics and DIY enthusiasts who need to test fuel pumps and troubleshoot electrical systems easily. It’s simple to use and works with most 12V vehicles.	View on Amazon (paid link)

Detailed Reviews

Discover the top 10 Fuel Pump Relay Testers handpicked for reliability and performance. Each tool is expert-approved and customer-loved, ensuring you find the perfect fit for your needs. Dive in to simplify your repairs and save time today!

1. RVMARINEPAT Relay Bypass Switch 9038 Relay Tester Kit Diagnostic Tester Scan Tool & Fuel Pump Relay Bypass Master Kit Replaces 9036 9037 Compatible with Domestic GM BMW Audi Chrysler 6-Pack

RVMARINEPAT Relay Bypass Switch 9038 Relay Tester Kit Diagnostic Tester Scan Tool & Fuel Pump Relay Bypass Master Kit Replaces 9036 9037 Compatible with Domestic GM BMW Audi Chrysler 6-Pack

The RVMARINEPAT Relay Bypass Switch 9038 is a must-have tool for car repairs. It works with many car brands like Audi, BMW, GM, and Chrysler.

This 6-pack kit helps you fix electrical issues fast. It replaces multiple relay models and controls fuel pumps, lights, and more.

Easy to use, built to last, and saves time. Perfect for any mechanic’s toolbox.

Pros	Cons
Fits many cars, works with Audi, BMW, GM, and more. Quickly spots issues, saves time on repairs. Strong and reliable, built to last long. Full 6-pack kit, ready for all repair needs.	No instructions included, might confuse first-time users. Limited to 12V systems, not suitable for all vehicles. Bulkier size may not fit in tight spaces.

Perfect For:

This tool is perfect for car mechanics and DIY drivers. It saves time on every job.

Ready to Purchase?

View Price on Amazon (paid link)

2. Weasch 9038A Automotive Relay Bypass Switch Relay Tester Kit 12V 6-Pack

Stop guessing electrical problems. Fix your car fast today.

Plug this relay tester right in. Find bad fuel pumps with ease. Save precious time in the shop.

Built tough for daily work. Handles heavy power safely now. Grab your 6-pack kit today.

Pros	Cons
Fits most cars, works with fuel pumps, lights, windows. Quick fixes, skip switches, find issues fast. Tough build, fire-safe shell, lasts long. Safe for 12V, handles 20A steady, 30A bursts. 6-pack kit, ready for all repair needs.	No digital screen for easy reading. Limited current may not fit big trucks.

Perfect For:

Pros and home folk love this kit. It fits most cars and holds 20 amps safe.

Ready to Purchase?

View Price on Amazon (paid link)

3. Weasch 9038 Relay Bypass Switch, Relay Tester, Fuel Pump Bypass Switch Kit, Pack of 6 (9038 W/O Wire)

The Weasch 9038 Relay Bypass Switch is a handy tool for electrical diagnostics. It saves time by directly controlling the fuel pump circuit. Simply plug it in and get to work.

This kit replaces part numbers 9036 and 9037. It works with most car brands, including domestic, Japanese, Korean, and German models. Use it for fuel pumps, window motors, and more.

The PA66 flame-retardant shell is dustproof and waterproof. Silver contacts ensure stable power supply. Each pack includes six switches for your convenience.

Pros	Cons
Fits many car types Handles up to 20 amps Keep dust out easily Saves time on electrical tests Get 6 switches in box	No wires included, requires extra purchase for complete setup. Limited to 12V systems, not suitable for higher voltage applications. OEM check needed, wrong part may lead to incompatibility issues.

Perfect For:

Car owners and pros will love this tool for easy fuel pump tests. It lets you fix cars fast so you can save time and get back on the road.

Ready to Purchase?

View Price on Amazon (paid link)

4. 9038A Relay Bypass Switch Kit, 6-Pack, Black

This powerful tool lets you control your fuel pump independently. Just plug it in to start your project now.

You can use a standard amp probe. It handles 20 amps with ease. It fits many different devices.

Get this handy 6-pack in black. It is easy to install with a simple switch flip.

Pros	Cons
Directly controls the fuel pump Plug-and-play setup is so simple Works with scope probes Handles 20 amps of power Fits many different devices	No safety lock: Switch can flip accidentally, causing unexpected operation. Limited amps: Not for high-power devices over 30 amps. Basic design: Lacks advanced features like indicators or remote control.

Perfect For:

The 9038A Relay Bypass Switch Kit is perfect for car enthusiasts and mechanics. It lets you control fuel pumps and other devices easily, making testing and repairs simple.

Ready to Purchase?

View Price on Amazon (paid link)

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

The YUXIVCNE 9038 Fuel Pump Relay Bypass Master Kit is a 6-pack of tools for testing and diagnosing car systems. It works with Audi, BMW, Volkswagen, GM, Chrysler, and more. This kit replaces 9036 and 9037 models.

It gives you control over key car parts like fuel pumps, windows, and lights. You can test and monitor these parts easily. It works with 12V DC motors and runs independently of the car’s key system.

The kit is plug-and-play, so setup is quick. It’s made of durable materials to last long. Perfect for reliable and efficient car repairs.

Pros	Cons
Fits many car models. Controls fuel pumps well. Works on windows and fans. Uses a push button switch. Setup is quick and easy.	Limited vehicle compatibility – not for all car models. No instructions included – might confuse beginners. Basic design – lacks advanced diagnostic features.

Perfect For:

This YUXIVCNE 9038 Fuel Pump Relay Bypass Master Kit is perfect for car owners and mechanics who need to test and control fuel pumps and other 12V DC motors easily. It’s great for quick fixes and reliable performance in Audi, BMW, Volkswagen, GM, Chrysler, and Korean vehicles.

Ready to Purchase?

View Price on Amazon (paid link)

6. 9038A Relay Bypass Switch Kit with Precision Amp Loop (6-Pack) & Relay Puller Pliers, Heavy-Duty Fuel Pump Relay Tester, Accurate Current Loop Circuit Diagnostic Tool for 12V Automotive Motors

9038A Relay Bypass Switch Kit with Precision Amp Loop (6-Pack) & Relay Puller Pliers, Heavy-Duty Fuel Pump Relay Tester, Accurate Current Loop Circuit Diagnostic Tool for 12V Automotive Motors

The 9038A Relay Bypass Switch Kit is a must-have tool for automotive diagnostics. It lets you control circuits directly, saving time and effort during troubleshooting. The included Relay Puller Pliers make removing stubborn relays easy and safe.

Works with most vehicles, from Domestic to German models. Tests fuel pumps, motors, and switches with ease. Six switches and a dedicated tool offer a complete solution.

Built with high-quality materials, these switches are durable and safe. Handles heavy-duty use with 20 Amps continuous and 30 Amps surge capacity. The 7-piece kit includes everything you need for reliable diagnostics.

Pros	Cons
Saves time with direct circuit control for fast troubleshooting. Universal fit for most vehicles, one kit for all. Durable, waterproof design ensures long-lasting reliability. Handles high power for heavy-duty automotive systems.	Limited to twelve volt systems only. May feel too complex for beginners.

Perfect For:

This 9038A Relay Bypass Switch Kit is perfect for auto mechanics and DIY car enthusiasts. It’s a must-have tool for quick and accurate electrical diagnostics.

Ready to Purchase?

View Price on Amazon (paid link)

7. EATAKWARD 6Pcs 9038A Relay Bypass Switch Kit, Relay Tester Fuel Pump Bypass Tool, Replacement for Most Domestic/Japanese/Korean/German Vehicles

EATAKWARD 6Pcs 9038A Relay Bypass Switch Kit, Relay Tester Fuel Pump Bypass Tool, Replacement for Most Domestic/Japanese/Korean/German Vehicles

The EATAKWARD 6Pcs 9038A Relay Bypass Switch Kit is a must-have tool for car repairs. It works with most vehicles, from domestic to German models. This kit simplifies relay testing and circuit control.

Its flame-retardant shell ensures durability and safety. The silver contacts provide high conductivity for stable power supply.

With plug-and-play design, it skips complicated wiring tests. It handles up to 30 amps of surge current, making it reliable for fuel pumps and headlights.

Pros	Cons
Fits most cars, from Domestic to German models. Plug-and-play design for quick, easy circuit testing. Handles high current, up to 30 amps for reliable use. Durable, waterproof build with flame-retardant shell.	Not for heavy-duty trucks or industrial use. Limited to 12V systems, no 24V support. No instructions for beginners, DIY skills needed.

Perfect For:

This EATAKWARD Relay Bypass Switch Kit is perfect for car owners and mechanics who need a quick and reliable way to test and control automotive relays. It’s ideal for anyone working on fuel pumps, headlights, or window motors in most domestic, Japanese, Korean, or German vehicles.

Ready to Purchase?

View Price on Amazon (paid link)

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

The LEQUDUO 9038 Relay Tester is a must-have tool for any mechanic. It helps quickly diagnose electrical issues in cars. This saves time and makes repairs easier.

Installation is simple and fast. Just plug it in where the fuel pump relay goes. It works with most car models, from domestic to German.

The kit includes six relay bypasses. It handles up to 20 amps continuously and 30 amps in surges. Perfect for reliable performance.

Pros	Cons
Saves time diagnosing car electrical issues with ease. Simple plug-and-play installation for quick fuel pump control. Handles up to 20 amps continuously, 30 amps in surges. Pack of 6 ensures you always have spares ready.	Some cars may not fit the style. Plastic body may get hot over time. Wrong wiring could cause sparks.

Perfect For:

This LEQUDUO 9038 Relay Tester is perfect for mechanics and DIY car enthusiasts. It’s a must-have tool for quick electrical diagnostics, saving time and effort in fixing car issues.

Ready to Purchase?

View Price on Amazon (paid link)

9. JAMHER 6Pcs 9038 Relay Bypass Tester Kit, Diagnostic Scan Tool

The JAMHER 6Pcs 9038 Relay Bypass Tester Kit is a powerful diagnostic tool designed for easy and efficient vehicle repairs. It works with multiple car brands, including Audi, BMW, Volkswagen, GM, and Chrysler, making it a versatile choice for mechanics and DIY enthusiasts.

This kit includes six relay testers, each clearly labeled for different relay slots. It helps you quickly find and fix electrical problems, saving you time and money.

With a strong 20-amp continuous and 30-amp surge capacity, this kit is built to last. It handles a wide range of repair jobs, from simple fixes to complex troubleshooting. The JAMHER 6Pcs 9038 Relay Bypass Tester Kit is your go-to tool for reliable and efficient vehicle repairs.

Pros	Cons
Broad compatibility for Audi, BMW, Volkswagen, GM, Chrysler, and more. Instant fault detection with plug-and-test simplicity for quick diagnostics. Heavy-duty design ensures reliable, repeatable performance job after job. 6-piece set covers multiple relay models and repair scenarios effortlessly.	Limited to 12V systems only No digital display for readings Bulky for tight relay slots

Perfect For:

This JAMHER 6Pcs 9038 Relay Bypass Tester Kit is perfect for busy mechanics and DIY enthusiasts. It’s ideal for anyone who needs to quickly diagnose electrical issues in Audi, BMW, Volkswagen, GM, Chrysler, and more.

Ready to Purchase?

View Price on Amazon (paid link)

10. Fuel Pump Relay Bypass Master Kit

The Fuel Pump Relay Bypass Master Kit lets you activate fuel pumps without starting the engine. It’s perfect for testing fuel pressure and troubleshooting circuits. The built-in test lead works with clamp meters for current measurement.

This kit includes 6 common relay bypass configurations for 12V DC systems. It’s made with flame-retardant nylon and copper terminals for reliable performance. Each adapter is clearly labeled and individually packed for easy storage.

Pros	Cons
Test fuel pumps without starting your engine. Measure electrical current fast with built-in leads. Fit six common vehicle relay styles easily. Rely on strong copper and flame-retardant parts. Find the right size fast in storage.	Not for beginners: Requires basic electrical knowledge for safe use. Limited compatibility: Works only with 12V DC systems, not universal. No instructions: Lacks step-by-step guidance for first-time users.

Perfect For:

This Fuel Pump Relay Bypass Master Kit is perfect for mechanics and DIY enthusiasts who need to test fuel pumps and troubleshoot electrical systems easily. It’s simple to use and works with most 12V vehicles.

Ready to Purchase?

View Price on Amazon (paid link)

Buying Guide

Fuel pump relay testers hold your engine together. They fix car problems fast.

Users share great experiences with these kits. One mechanic saved hundreds on diagnostics. Another bypassed a stubborn relay in minutes. Customers praise the simple plug-and-play design. Several report successful tests on various vehicle brands. The six-pack value feels like a smart investment.

Consider these factors carefully:

Compatibility
Check your car’s model before buying. Look for listed brand names like Audi, BMW, GM. Ensure the kit lists part numbers 9036 or 9038. Testers work on both domestic and imported vehicles. Check the relay slot size to match your car.

Capacity
Look for switches that handle car demands. Find specs listing 20 amps continuous use. Look for 30 amp surge capability too. This ensures your tools won’t burn out. Fuel pumps pull hefty power from circuits.

Durability
Quality materials last through daily work. Flame-retardant plastic shells resist damage. Yellow or black casing offers sturdy protection. Silver contacts maintain steady connections. Heavy-duty designs handle tough shop environments.

Design
Pick a user-friendly setup for quick fixes. Simple flip switches make testing easy. Clear labeling helps identify each relay. Some kits come with removal tools included. Compact designs save valuable toolbox space.

Value
Multi Pack Kits offer real savings. Six switches mean more projects per kit. Replacement parts are often cheaper than repair bills. Cast the cost against shop diagnosis fees. Quality tools justify their higher price points.

Features
Some kits come with current loop probes. These help amp meter makers track usage. Relay puller pliers can remove tight relays. Extra test leads provide extra versatility. Choose features that match your specific diagnostic needs.