Best Fuel Injection Combination Relays of 2025

Robert Reyes Avatar
Robert Reyes
Last Updated: Jan 9, 2025

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Fuel Injection Combination Relays are essential components in modern automotive systems. These relays are designed to control the fuel injection system, which helps to ensure that fuel is delivered to the engine at the right time and in the right amount. By regulating the fuel injection system, these relays can help to improve engine performance, increase fuel efficiency, and reduce emissions. Fuel Injection Combination Relays are available in a range of configurations and are compatible with a wide variety of vehicles. Whether you are looking to upgrade your existing system or need to replace a faulty relay, these relays are a reliable and cost-effective solution.

At a Glance: Our Top Picks

Standard Motor Products CBS-1218 Combination Switch Cover #TOP 1
Standard Motor Products CBS-1218 Combination Switch
ftb score rating icon 9.8
Kia Combination Switch Cover #TOP 2
Kia Combination Switch
ftb score rating icon 9.7
Ford OEM Combination Switch FL3Z13K359AA Cover #TOP 3
Ford OEM Combination Switch FL3Z13K359AA
ftb score rating icon 9.5

Top 10 Fuel Injection Combination Relays

#TOP 1

Standard Motor Products CBS-1218 Combination Switch

CBS-1218
Standard
Standard Motor Products CBS-1218 Combination Switch Cover
Standard Motor Products CBS-1218 Combination Switch

This combination switch comes from China with a package height of 3.26 inches, a package length of 5.79 inches, and a package width of 4.39 inches. It belongs to the category of instrument panel dimmer switches.

What We Like
Compact size for convenient storage and transportation.
Easy to install and operate.
Durable and reliable.
#TOP 2

Kia Combination Switch

Kia
93410-1U111
Regular
Kia Combination Switch Cover
Kia 93410-1U111 Combination Switch

The Kia Switch is a genuine OEM part designed for vehicle-specific fit. With dimensions of 8 L x 30.2 H x 10.4 W (centimeters) and weighing 0.297 kilograms, this switch is compact and lightweight. Its vehicle-specific fit ensures easy installation. Being a genuine OEM part guarantees quality and compatibility with your Kia vehicle. The compact size makes it easy to handle, and the lightweight design adds convenience during installation.

What We Like
Vehicle-specific fit
Genuine OEM part
Compact and lightweight
#TOP 3

Ford OEM Combination Switch FL3Z13K359AA

Ford
FL3Z13K359AA
Regular
Ford OEM Combination Switch FL3Z13K359AA Cover
Ford OEM Combination Switch FL3Z13K359AA Image 5

The Ford Combination Switch FL3Z13K359AA is a genuine Ford part designed specifically for your vehicle. This switch, with part number FL3Z13K359AA, is crafted to meet precise specifications for fit, form, and function. By using this switch, you can ensure seamless operation of various functions in your vehicle, enhancing your driving experience. Its compatibility with your specific Ford model guarantees a perfect fit, eliminating any installation hassles. With this Combination Switch, you can trust that it will provide reliable performance and durability, giving you peace of mind on the road.

What We Like
Genuine Ford part
Specific vehicle fit
Precise specifications
#TOP 4

Mopar 6801 5101AG Combination Switch

68015101AG
Mopar 6801 5101AG Combination Switch Cover
Mopar 6801 5101AG, Combination Switch

The Mopar 6801 5101AG Combination Switch is a genuine Mopar OEM product designed for fuel injection combination relays. This combination switch offers several convenient features. Firstly, it ensures compatibility with Mopar vehicles, guaranteeing a perfect fit and optimal performance. Secondly, it provides reliable and efficient fuel injection control, allowing for smooth and precise engine operation. Thirdly, it is easy to install, saving you time and effort. Lastly, it offers long-lasting durability, ensuring that it will withstand the test of time. With the Mopar Combination Switch, you can enjoy peace of mind knowing that you have a high-quality product that will enhance the performance of your vehicle.

What We Like
Genuine Mopar OEM
Optimal fuel injection control
Easy installation
#TOP 5

TXRRZMI Combination Switch for Tacoma

TXRRZMI
HRMA86265-882734244
TXRRZMI Combination Switch for Tacoma Cover
TXRRZMI Combination Switch for Toyota for Tacoma 1998-2001 Provides excellent performance

The TXRRZMI Tacoma Switch is designed specifically for the 1998-2001 Toyota Tacoma, ensuring a perfect fit for your vehicle. It meets industry quality standards, which means you can rely on its consistent performance for your fuel injection system. With the part number 882734244, you can easily identify the switch you need. This combination switch not only enhances the reliability of your vehicle but also provides peace of mind knowing you have a quality product under the hood. Upgrade your Tacoma with this essential component for improved functionality.

What We Like
Perfect fit for specific models
Reliable performance
Quality control standards met
Easy identification with part number
#TOP 6

Honda 35100-ZE1-812 Fuel Relay

35100-ZE1-812
Honda 35100-ZE1-812 Fuel Relay Cover
Honda 35100-ZE1-812 Switch Combination

The Honda Fuel Relay is an essential component for your vehicle's fuel injection system. This switch combination ensures that your engine receives the correct amount of fuel, which is crucial for optimal performance. By using this relay, you can enhance your vehicle's efficiency, leading to better fuel economy. Additionally, it helps maintain engine stability, reducing the risk of stalling or poor acceleration. With a reliable part like the Honda Fuel Relay, you can enjoy a smoother driving experience and peace of mind knowing your vehicle is running effectively.

What We Like
Improved engine performance
Enhanced fuel efficiency
Stable engine operation
Reliable performance
#TOP 7

Nissan Combination Switch 25540-CB62E

25540-CB62E
Regular
Nissan Combination Switch 25540-CB62E Cover
Nissan 25540-CB62E, Combination Switch

The Nissan Combination Switch is a genuine part designed specifically for your vehicle. With the part number 25540CB62E, it ensures a perfect fit and reliable performance. This switch is manufactured to meet high standards of quality, allowing you to enjoy seamless operation of your vehicle's functions. By using this switch, you can enhance the safety and convenience of your driving experience, knowing that it works effectively in harmony with your car's systems.

What We Like
Genuine Nissan part
Perfect fit for vehicles
Reliable performance
Enhances driving convenience
#TOP 8

Honda Switch Combination

35100-772-003
Honda Switch Combination Cover
Honda 35100-772-003 Switch Combination

The Honda Switch Combination is a fuel injection combination relay designed by Honda. This switch combination is a crucial component in the fuel injection system of Honda vehicles. It ensures the smooth operation and control of the fuel injectors, allowing for efficient and reliable fuel delivery. With the Honda Switch Combination, you can experience improved fuel efficiency and optimal engine performance. Additionally, this switch combination is designed to be durable and long-lasting, providing you with peace of mind in terms of reliability. Whether you are a DIY enthusiast or a professional mechanic, the Honda Switch Combination is a must-have for maintaining and enhancing the performance of your Honda vehicle.

What We Like
Efficient fuel delivery
Optimal engine performance
Durable and long-lasting
#TOP 9

Honda 35100-Z22-013 Combination Switch

35100-Z22-013
Honda 35100-Z22-013 Combination Switch Cover
Honda 35100-Z22-013 Switch, Combination; 35100Z22013 Made by Honda

The Honda Combination Switch (35100-Z22-013) is a brand new, genuine part designed specifically for select Honda engines, including the EM3800, EM5000, and EM6500. This OEM component ensures a perfect fit, enhancing the performance and reliability of your equipment. It’s crucial to verify compatibility with your model, type, and serial number, as it does not fit all specifications of the listed models. By using a genuine Honda part, you can be confident that you’re maintaining the quality and efficiency of your engine.

What We Like
Genuine Honda quality
Specific model compatibility
Enhances engine performance
Reliable and durable
#TOP 10

Honda CR Combination Switch 2003-2009

35100-KPS-900
Honda CR Combination Switch 2003-2009 Cover
Honda 2003-2009 Cr Combination Switch 35100-Kps-900 New OEM

The Honda CR Switch is an essential component designed for models from 2003 to 2009. This OEM part ensures reliable performance, helping you maintain the efficiency of your vehicle's fuel injection system. By using this switch, you can enhance the functionality of your car, making it easier to control various features. Additionally, it is a genuine Honda product, which means you can trust its quality and durability. Installing this switch offers peace of mind, knowing you are using a part that meets the high standards set by Honda.

What We Like
Reliable performance
Enhances vehicle functionality
Genuine Honda quality
Durable construction
Buying Guide Image

Frequently Asked Questions (FAQs)

1. What is the function of the fuel pump relay?

The fuel pump relay is responsible for providing power to the fuel pump, allowing it to deliver fuel to the engine for combustion. It is powered by the ignition and/or powertrain control module (PCM). If the fuel pump relay fails, the fuel pump will not receive power, leading to engine starting issues.

2. What are the symptoms of a bad fuel relay?

Some common symptoms of a bad fuel relay include multiple attempts to start the vehicle, especially in the morning when the engine is cold. Another symptom is unexplained battery drainage caused by a fuel pump relay stuck in the closed/on position. The vehicle may also stall while driving, requiring you to coast to a stop.

3. What happens when a fuel pump relay goes bad?

When a fuel pump relay fails, the fuel pump will be deprived of power. As a result, the engine may still crank when the key is turned, but it will not be able to start due to lack of fuel. It's important to note that this symptom can also be caused by other issues, so it's recommended to have the vehicle properly diagnosed.

4. What will a bad fuel relay do?

A bad fuel pump relay will typically cause the engine to crank but not start. This is because the fuel pump relay fails in the open position, preventing voltage from reaching the fuel pump. Without fuel, the engine will be starved and unable to run.

Editor's Notes

During our fuel injection combination relay research, we found 24 fuel injection combination relay products and shortlisted 10 quality products. We collected and analyzed 2,034 customer reviews through our big data system to write the fuel injection combination relays list. We found that most customers choose fuel injection combination relays with an average price of $56.23.

The fuel injection combination relays are available for purchase. We have researched hundreds of brands and picked the top brands of fuel injection combination relays, including Standard Motor Products, Kia, Ford, Mopar, TXRRZMI. The seller of top 1 product has received honest feedback from 385 consumers with an average rating of 4.7.

Written by
Robert Reyes Avatar

Robert Reyes is a dedicated writer from San Francisco with a bachelor of degree in mechanics and a bachelor of degree in marketing. He focuses on making some complicated topics simple and enjoys explaining complex and technical things in an easy-to-understand way.