Best Electronic Engine Control Relays of 2025

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Electronic engine control relays are essential components in modern vehicles, playing a vital role in ensuring the smooth operation of the engine. These relays are designed to monitor and control various engine functions, such as fuel injection, ignition timing, and emissions control. They work by receiving signals from the engine control module and activating or deactivating various components, such as fuel pumps and injectors, based on the inputs received. With the help of electronic engine control relays, vehicles can achieve better fuel efficiency, improved performance, and reduced emissions. These components are widely used in a variety of vehicles, including cars, trucks, and motorcycles.
At a Glance: Our Top Picks
Top 10 Electronic Engine Control Relays
GM Genuine Parts Engine Control Module
The ACDelco Engine Control Module is essential for your vehicle's performance. This component requires specific programming and setup, ensuring it operates correctly within your vehicle. It governs critical systems, which means it plays a significant role in how your car functions. As a GM-recommended replacement, it aligns perfectly with your vehicle's original components, offering peace of mind. Additionally, it is manufactured to meet GM's OE specifications, guaranteeing a proper fit and reliable operation. With this module, you can enhance your vehicle’s overall efficiency and reliability.
Standard Motor Relay for Engine Control Module Wiring
This Intermotor Relay is a vehicle-specific, well-crafted quality accessory that falls under the category of electronic engine control relays. The package dimensions are 4.0 L x 1.75 W x 4.06 H (inches).
Standard Motor Products EM875 Module
The Standard EM875 Module is engineered to ensure reliable and consistent performance for your vehicle. Its design is tailored to fit your specific vehicle and lifestyle, which means you can enjoy seamless functionality. Crafted from high-quality materials, this module promises exceptional durability, giving you peace of mind about its longevity. Additionally, it meets or surpasses rigorous quality standards, ensuring that you receive a product you can trust. If you have any questions regarding fitment, support is readily available to assist you.
Standard Motor Products EM1999 Module
The Standard Motor EM1999 Module is a crucial auto part designed to enhance your vehicle's performance. With dimensions of 9.8 inches in length, 6.9 inches in width, and 2.0 inches in height, it fits well in most engine spaces, making installation easier for you. Weighing just 2.1 pounds, this module is lightweight, which simplifies handling during setup. Additionally, it comes packaged as a single unit, ensuring you have everything you need for your repair or upgrade. This product falls under the category of electronic engine control relays, providing reliable control over engine functions for improved efficiency and performance.
Cardone Remanufactured Ford ECM 78-4233
The Cardone Ford ECM is designed to ensure your vehicle's engine management system operates smoothly. With on-car validation testing, you can be confident that this module fits perfectly and functions as intended. It replaces all OE components known for high failure rates, giving you peace of mind. Furthermore, each electronic module undergoes thorough testing to meet original equipment standards, ensuring reliability. Advanced robotic technology is used in the manufacturing process, which guarantees precision and consistency in quality. This attention to detail means you can rely on the Cardone Ford ECM for optimal performance.
Standard Motor VS53 Engine Control
The Standard Motor VS53 Engine Control is an auto part designed by Standard Motor Products. With a compact size of 2.43" in length, width, and 2.37" in height, and weighing only 0.13 lb, this electronic engine control relay is perfect for managing your vehicle's engine functions efficiently. The VS53 model ensures precise control and smooth operation, offering you reliability and peace of mind while driving. Its small size makes it easy to install and maintain, providing convenience and saving you time.
APDTY Body Control Module 162289
The APDTY Body Control Module is a brand new component designed to enhance your vehicle's electronic systems. It’s essential to check the compatibility chart to ensure a perfect fit for your specific vehicle model. This module plays a critical role in managing various electronic features, providing reliability and improving overall performance. By choosing this product, you can enjoy peace of mind knowing you are installing a quality part that meets the necessary standards for functionality and dependability.
Standard Motor Products EM6299 Module
The Standard Motor Module (EM6299) is designed to enhance your vehicle's performance with its electronic engine control capabilities. Weighing in at just 2.1 pounds, it is lightweight and easy to handle during installation or replacement. With dimensions of 10.88 x 3.99 x 7.2 inches, it fits conveniently in various engine compartments, making it a practical choice for many car models. This module is a crucial component for maintaining optimal engine function, ensuring that your vehicle runs smoothly and efficiently. By choosing this product, you can enjoy improved control over your engine's performance and reliability.
Bosch Engine Management ECU Relay
The Bosch ECU Relay is an original manufacturer accessory designed by Bosch for Electronic Engine Control Relays. This reliable unit ensures smooth engine management, providing efficient control over your vehicle's engine functions. With Bosch's trusted brand, you can count on high-quality performance and durability. The ECU Relay simplifies the management of your engine, offering convenience and peace of mind. Its seamless operation enhances your driving experience, making it a valuable addition to your vehicle.
Standard Motor Products EM1156 Module
The Standard Motor Module is designed with practicality in mind. With dimensions of 9.8L x 6.9W x 2.0H inches, it fits neatly in your engine compartment, ensuring easy installation. Weighing just 2.1 pounds, it is lightweight, making handling straightforward for users. This single unit is categorized under Electronic Engine Control Relays, which means it plays a crucial role in managing engine performance. By utilizing this module, you can enhance your vehicle's efficiency and reliability, leading to a smoother driving experience.
Frequently Asked Questions (FAQs)
1. What does a ECM relay do?
An ECM relay, or engine control module relay, is responsible for monitoring and delivering power to the engine control module (ECM) in a vehicle. The ECM is the computer that controls various components of the engine, and the relay ensures it receives the necessary power to operate.
2. What are the symptoms of a bad ignition relay?
Symptoms of a failed ignition relay include sudden stalling of the car while operating, difficulty starting the car, a dead battery, or a burned relay. If you experience any of these symptoms, there is a possibility that the ignition relay is faulty and may need to be replaced.
3. What happens when the ECM relay goes bad?
If the ECM relay becomes faulty and stops switching as it should, you may encounter issues with your vehicle. When the relay is stuck open, it fails to deliver power to the engine control module, resulting in the vehicle not starting.
4. What are the symptoms of a bad constant control relay module?
A bad constant control relay module (CCRM) can manifest in various symptoms. These include no start conditions, an inoperative fuel pump or powertrain control module (PCM), engine running warm due to an inoperative cooling fan, or the air conditioning not blowing cold air. If you experience any of these issues, it may indicate a faulty CCRM.
5. What happens when a relay goes bad?
When a relay goes bad, the electrical signal fails to reach its intended destination. For example, if the starter relay is faulty, the electrical signal required to start the engine won't make it from the battery to the starter motor. This can result in the engine not turning over, and you may hear a clicking sound when attempting to start the car.
During our electronic engine control relay research, we found 24 electronic engine control relay products and shortlisted 10 quality products. We collected and analyzed 2,848 customer reviews through our big data system to write the electronic engine control relays list. We found that most customers choose electronic engine control relays with an average price of $178.37.
The electronic engine control relays are available for purchase. We have researched hundreds of brands and picked the top brands of electronic engine control relays, including ACDelco, Standard Motor Products, Cardone, APDTY, Bosch. The seller of top 1 product has received honest feedback from 385 consumers with an average rating of 4.7.

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.