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The 8 Best automotive fuel injection combination relays of 2025

Are you trying to find automotive fuel injection combination relays among various brands on the market but aren’t sure where to begin? To assist you in finding the right one, we’ve put together a list of the 7 best to help you pick the perfect one!

We investigated and evaluated a number of the top-selling automotive fuel injection combination relays on the market in order to create our list of the best. Making a decision among the many options available is never simple. There are an infinite number of models available, each with a distinct price. And as you’ll find out, the best options aren’t usually the ones you imagine! This comparison is rich and relevant because of the numerous factors that were employed. You will find products featured in this ranking not only based on their pricing but also on their features and other customers reviews. To write this review, we completed 17 hours of research and did 63 automotive fuel injection combination relays tests. You won’t need to pick products at random any more. If you’re unsure of what to look for, browse our list and consult the buying guide!

An overview of our top picks

Table of contents

The best automotive fuel injection combination relays you can buy today

No. 1
Honda 35100-Z11-013 Switch Combination
  • Honda 35100-Z11-013 Switch Combination
No. 2
HONDA 35100-MCK-A00 SWITCH, COMBINATION
8 Consomer Reviews
No. 4
Jawmoy 1 PC Automotive Vacuum Fuel Pump, GX390 Pump Combination with Filter, Universal Carburetor Accessories 808656 49040-7008, Suitable for Cars, Trucks, Ships, Agricultural Machinery (Black)
  • Vacuum Control: The vacuum fuel pump with carburetor uses a vacuum signal to control its work. It draws fuel from the fuel tank by sensing the negative pressure signal generated when the engine is running, and injects it into the engine combustion chamber through the carburetor. This design delivers just the right amount of fuel based on engine load requirements.
  • Carburetor: Vacuum fuel pump is equipped with a fuel filter to remove impurities and particles from the fuel. This helps keep the carburetor working properly and prevents impurities from clogging the nozzles and injection holes, while also improving engine reliability and life.
  • Reliability and Durability: The vacuum fuel pump with carburetor is made of high-quality materials and has good durability and reliability. They can operate stably under long-term use and various working conditions, ensuring the reliability of fuel supply.
  • Special Design: The vacuum fuel pump is designed to work with the carburetor. They usually have the proper fuel output pressure and flow to meet the requirements of the carburetor, ensuring that the fuel is properly mixed and supplied to the engine.
  • Packing List: One fuel pump, One carburetor. We are committed to providing you with a perfect shopping experience, if you have any usage problems, please feel free to contact us directly, we will solve the problem for you within 24 hours on working days.
No. 5
Standard Motor Products, Inc. - Combination Swi (CBS1338) Assorted , One Size
  • Item Package Dimension: 10.599999989188L x 7.49999999235W x 5.099999994798H inches
  • Item Package Weight - 0.8499999992871979 Pounds
  • Item Package Quantity - 1
  • Product Type - ELECTRONIC SWITCH
No. 6
Honda 35100-VH7-B01 Switch Combination
  • Honda 35100-VH7-B01 Switch Combination
No. 7
Mercedes-Benz 000 545 23 10, Combination Switch
  • Genuine Mercedes-Benz OEM product
No. 8
YUXIVCNE 9038 Fuel Pump Relay Bypass Master Kit, Pack of 6 Relay Tester Diagnostic Scan Tool Relay 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 hassle-free 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 high-quality materials, ensuring reliability and durability to withstand long-term use in harsh conditions.
No. 9
Kia 93410-1U111 Combination Switch
  • Genuine OEM Part
  • Package Dimensions: 8 L x 30.2 H x 10.4 W (centimeters)
  • Fit type: Vehicle Specific
  • Package Weight: 0.297 kilograms
No. 10
Sylvil 4 PCS Power Relay, 5 Pin Multi Purpose Auto Fuel Pump Relay, G8V-RH-1C7T-R-DC12 Automotive Relay, High Performance Electrical System Electromechanical Relay Replacement
  • 【Excellent Material】: Adopting high quality plastic as the shell. It is strong, not easy to deform or break, can also withstand certain hot and cold conditions, which is very durable. The metal pins have excellent conductivity and good performance. Sealed design with good waterproof performance is not easy to short-circuit.
  • 【Function & Application】: The purpose of this relay is to automatically adjust and protect the circuit, providing safety. It has a wide range of applications, suitable for many electric vehicles, such as cars and motorboats. It's widely used in various electrical systems, such as fuel pumps, electric windows, door locks and lighting systems.
  • 【Size & Model】: It measures 0.9×0.98 inches and the model number is G8V-RH-1C7T-R-DC12 12VDC, suitable for 12V voltage. It is designed with five pins for more efficient and stable connection. It is a great replacement for your old or broken relay, saving you time and money to the repair store.
  • 【Using Method】: This relay is very simple to install and operate. You just connect the relay to the wires, and the components will function normally. The process can be completed in seconds without other tools, compact and lightweight design for easy installation in tight spaces, providing a hassle-free experience.
  • 【What You Get】: The product is available in two pieces and four pieces options for you to choose. The quantity is sufficient to meet your daily use and replacement needs, you can also share it with your family and friends.
No. 11
cerfioo Pack-2 Car 5 Pin Relay Switch 12V 30A SPST, Multi-Purpose Relay Heavy Duty Standard Relay Kit, Waterproof Stable Relay, Universal for Car Motor Replacement Accessories (Black)
  • Smooth Operation: Housing is protected from harsh temperatures and hood conditions for extended wear. All parts are manufactured to strict quality requirements. Relays play an important role in an ever-increasing number of automotive products.
  • Premium Material: The power relay components are made of high-quality composite materials and the pins are made of brass to withstand hot and cold conditions. Durable, strong and unbreakable, they will provide you with long-term support and are suitable for AC relay replacement and repair.
  • Easy to Use: The motor relay is suitable for use in ordinary cars and is simple to operate. You only need to connect the relay to the wires, no other tools are needed, which is convenient for your use and replacement, and allows your parts to work normally.
  • Wide Range of Applications: Starter relays can be commonly used in air conditioning compressor fan motors, starters, horns, igniters, fog lights, fans, rear window defroster, blower motors, cargo lights, driving lights and others.
  • Specifications: You will receive 2 12V 30A 5-pin relays. The 30A 12V relay can be used to control component circuits in vehicles with high current loads, such as fuel pumps and cooling fans. If you have any questions about product use, please feel free to contact us.
SaleNo. 13
Fuel Injection Relay, 5 Pin 12V Multi Purpose Relay, 61361729004 Fuel Pump Relay Fit for E30 E32 E34 E36 E38 318i 325e 740iL 740i
2 Consomer Reviews
Fuel Injection Relay, 5 Pin 12V Multi Purpose Relay, 61361729004 Fuel Pump Relay Fit for E30 E32 E34 E36 E38 318i 325e 740iL 740i
  • 【Wide Application】: Multi purpose car relay (on off), reliable and stable, original standard, fits for E30 E32 E34 E36 E38 318i 325e 740iL 740i. Please check carefully before purchase, and make sure you are ordering what you want.
  • 【Reference OE】: Replacing part number for reference is 61361729004, guaranteed to fit and perform exactly the same as OEM. Please make sure the OE number matches the part you are replacing.
  • 【Compact and Sturdy】: 5 pin relay is made of ABS plastic and metal material, flame retardant, not easy to break, rugged and durable. It meets strict quality control standards and is reliable in use.
  • 【Excellent Replacement】: Multifunction relay is easy to operate, practical multifunction relay, can directly replace the broken or shabby one. Focus on quality control in the production process and strict selection of raw materials to ensure quality and performance.
  • 【Rigorous Testing】: Automotive relay is manufactured to original specifications, has been extensively tested, with stable performance and high reliability. If you have any questions about this product, simply contact us for giving you a satisfactory solution.
No. 14
Honda 35100-767-B11 Switch Combination
  • Honda 35100-767-B11 Switch Combination
No. 15
WMAutoPart Fuel Injection Relay 12088567
  • Rapidly dissipates heat for cooler operating temperatures and longer part life
  • Precise short-circuit protection
  • Mounting and connectors identical to OE
  • OE form, fit and function for precise fit and reliable operation
  • Precise fit and size for ease of installation
No. 17
Mercedes-Benz 906 545 03 10, Combination Switch
  • Genuine Mercedes-Benz OEM product
No. 18
WMAutoPart Fuel Injection Relay 20742
1 Consomer Reviews
WMAutoPart Fuel Injection Relay 20742
  • Rapidly dissipates heat for cooler operating temperatures and longer part life
  • Precise short-circuit protection
  • Mounting and connectors identical to OE
  • OE form, fit and function for precise fit and reliable operation
  • Precise fit and size for ease of installation
SaleNo. 19
9038 Fuel Pump Relay Bypass Master Kit Relay Tester Diagnostic Scan Tool Compatible with Domestic Volkswagen GM BMW Chrysler Audi Replaces# 9036 9037(Pack of 6)
  • 【Function】This Relay Tester is very Suitable for Electrical Diagnosis and Helps Save a Lot of Time.Simply Insert the Position of the Fuel Pump Relay and You can Directly Control the Fuel Pump Circuit.
  • 【Replaces#】9038, 9036, 9037.Please Check the OEM Part Number and Make Sure Your Part Number Matches this Part Number Before Buying!
  • 【Compatible】Fits for GM; Korean; Chrysler; Domestic; 2004-2006 Audi; 1995-2006 BMW; 1999-2005 Volkswagen; 1970 and Newer Japanese.
  • 【Premium Quality】Tested & Certified to Meet or Exceed OEM Quality Standards.All Products are 100% Tested Before Leaving the Factory.Made of High Quality Material.
  • 【Warranty】The Relay Tester come with 12 Month Warranty. Hassle-free Return and Refund Policy. Please Buy it with Your Confidence.
No. 20
Standard Motor Products RY-1500 Fuel Injection Main Relay
  • Part Number: Ry-1500
  • Country Of Origin: United States
  • Package Dimensions: 8.83" L X 6.938" W X 2.642" H
  • Package Weight: 4.847 Pounds

How to choose a good automotive fuel injection combination relays

Does the idea of finding a fantastic automotive fuel injection combination relays make you anxious? When it comes to purchasing this product, specifically when deciding which model to select, has your head been spinning between options? You are not alone if that is the case. We are aware of the pressure involved in the purchasing process!

Your presence here indicates that you are interested in automotive fuel injection combination relays. Before choosing which product would be the best for your needs after being inundated with information, locate a reliable source with genuine selections. You can get that information from a variety of sources, including buying guides and rating websites, word-of-mouth recommendations from friends and family, online discussion forums where users can share their own experiences, product reviews that can be found all over the internet, and YouTube channels. You can only get the right product through exhaustive analysis. But you realize that’s not always simple. In order to ease your concerns, we have taken the time to develop a list of the top automotive fuel injection combination relays products available right now. You might be wondering how we came up with the list. How was this buying guide developed?

First, we used our algorithms to gather as much reliable data as we could about these products. To verify all the data gathered, we used both artificial intelligence and a lot of algorithms.
Then, our experts used criteria that are recognized in the business to evaluate them according to their quality to price ratio, allowing us to choose the top automotive fuel injection combination relays on the market right now!

The selection of the goods is not arbitrary. Before creating a list, we take into account a number of factors. Below are some of the criteria discussed:

Brand Value: What happens if you choose a dubious brand just because it appears to be a good deal? So the likelihood of receiving a product with a short shelf life increases. That is due to the fact that well-known brands have a reputation to uphold, while others do not. Top automotive fuel injection combination relays brands strive to provide some distinctive traits that set them apart from the competition. So, hopefully one or more of the items on our list will be perfect for you.

Features: Useful features are all you need, not tons of them. We consider the important aspects and select the top automotive fuel injection combination relays based on those.

Specifications: Numbers always help you measure the quality of a product in a quantitative way. We try to find products with higher specifications, but with the right balance.

Quality: A product’s quality may always be quantified with the aid of numbers. We look for goods with better standards that strike the proper balance. The best quality product that gets highly appreciated and recommended by experienced users.

Customer ratings:  Would it be accurate to suggest that the automotive fuel injection combination relays were used by hundreds of customers before you? Superior ratings indicate that many customers had better service.

Customer Reviews: Like ratings,  provide you with accurate and reliable information about the product from genuine customers. Customer ratings are very important to all of us because they contain accurate and reliable information about the customer service we received from several hundred customers.

Seller Rank: This is very intriguing! Not only do you need a good automotive fuel injection combination relays, you also need a product with rising sales that is trendy. It accomplishes two goals. First, the expanding user base proves the quality of the product. Second, given that number, producers must be able to offer greater quality and after-sales support.

Value: You get what you pay for, they say, so consider the value. Cheap isn’t always good and expensive isn’t always bad. However, that does not imply that spending a lot of money on a product that is flashy but underwhelming is a good idea. Before adding them to the list, we make an effort to evaluate how much value you can get for your money from your automotive fuel injection combination relays.

Durability: Durability and reliability are closely related concepts. You will benefit from a strong and long-lasting automotive fuel injection combination relays for months and years to come.

Product availability: Products come and go, and new ones replace the old ones. Most likely, a few new features and required changes were made. What use is it to use a supposedly good product if the maker no longer supports it? We make an effort to highlight products that are current and offered by one or more trustworthy sellers, if not more.

Negative Reviews: Yes, we do take that into account as well! The goods with the majority of bad reviews are filtered out and disregarded when we choose the best-rated one on the market.

These are the standards by which we selected our automotive fuel injection combination relays. Do we end our process there? Hell no. The most crucial fact about us that you should be aware of is that we regularly update our website with current and pertinent information. We have one more layer of filtration since we place the greatest importance on reader satisfaction. Please let us know if any product included here is incorrect, irrelevant, subpar, or simply out of date. We always value your opinions, and we’ll work hard to make any necessary corrections to our list in response to them.

Why should you believe us?

There are now thousands of possibilities for these products on Amazon, but choosing the best one can be difficult and time-consuming. And what automotive fuel injection combination relays should you purchase in 2022?

This guide is the result of more than 10 years of experience in researching, testing and writing about many topics. Each member of our team is an authority in their area. We read every article we could find online and every consumer review on every retail website for seven hours. Additionally, we discovered a ton of websites that offered helpful resources, including buying tips and thorough information on automotive fuel injection combination relays.