Best Car Ignition Relays of 2025

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Car ignition relays are essential components of a vehicle's electrical system. These relays are responsible for carrying the electrical current from the battery to the starter motor. Without a functional ignition relay, a car's engine will not start. These relays are designed to withstand the high levels of heat and electrical current that are produced during engine operation. They come in a variety of shapes and sizes to fit different car models and are typically located in the engine compartment or under the dashboard. Regular maintenance and replacement of faulty ignition relays are crucial for ensuring the proper functioning of a car's electrical system.
At a Glance: Our Top Picks
Top 10 Car Ignition Relays
Standard Motor Products RY71T Ignition Relay
This car ignition relay is made in the United States and has a package height of 2.714 inches, a package length of 9.665 inches, and a package width of 6.911 inches. It is designed to fit specific vehicles, ensuring a proper and secure installation.
ACDelco GM Original Equipment Ignition Relay
The ACDelco GM Original Equipment 13598349 Ignition Relay is designed to help optimize your GM vehicle's capabilities by working with its electronics. It is a reliable and durable GM-recommended replacement part that is manufactured to GM OE specifications for proper fit, form, and function.
Standard Motor Products Ignition RY-1773 Relay
This ignition relay is a product from Taiwan, with a package dimension of 3.7 L x 5.1 W x 9.3 H cm. It is a multi-functional relay type that can be used for car ignition purposes. The package includes one piece of the relay.
Standard Motor Products Ignition Relay
This ignition relay is made in the United States and has a package height of 2.714 inches, a length of 9.665 inches, and a width of 6.911 inches. It falls under the category of car ignition relays.
STANDARD IGN RY604 Relay
The STANDARD IGN RY604 Relay is a high-quality circuit opening relay that offers excellent performance and reliability. Made in China, this relay is designed to meet the highest standards of quality and durability. With a compact size and dimensions of 1.3 inches in height, 3.6 inches in length, and 1.7 inches in width, it is easy to install and fits perfectly in any vehicle. This relay is an essential component for various electrical circuits, ensuring smooth operation and preventing damage. Whether you are replacing a faulty relay or upgrading your vehicle's electrical system, the STANDARD IGN RY604 Relay is the perfect choice. It provides convenience and peace of mind, allowing you to enjoy a hassle-free driving experience.
Standard Motor Ignition Control Module Relay
This Auto Part is a Car Ignition Relay from China. It has a package dimension of 4.7 cms (L) x 10.4 cms (W) x 11.0 cms (H) and comes in a package quantity of 1.
Standard Motor Products RY429 Relay
Standard Relay by Standard Motor Products, model RY429, is a reliable car ignition relay. With a package dimension of 9.9" in length, 6.19" in width, and 4.19" in height, it is compact and easy to install. Weighing 5.37 pounds, it is lightweight yet sturdy. Made in China, it ensures quality. The RY429 model is known for its efficiency in controlling electrical circuits in your vehicle, providing a smooth ignition process. It's a must-have for ensuring your car starts up effortlessly.
ACDelco GM Ignition Relay
The ACDelco Relay is designed to work with your vehicle's electronics, optimizing its capabilities. It is a GM-recommended replacement part that ensures the quality, reliability, and durability of GM OE components. Specifically manufactured to meet GM OE specifications for fit, form, and function, this relay enhances your GM vehicle's performance. By using this relay, you can trust that your vehicle's electronics are operating at their best, ensuring smooth functionality and peace of mind on the road.
YLQASOON 12V Waterproof Ignition Relay
The YLQASOON Ignition Relay is designed as a reliable replacement part compatible with Onan Generator Run Stop systems. With a robust 12V, 30/40 AMP rating, this 5-pin relay ensures effective operation, making it essential for maintaining your generator's functionality. Its tested quality guarantees dependable performance, giving you peace of mind during use. If you ever find yourself unsatisfied, customer support is readily available to assist you, ensuring a positive experience. This relay is an excellent choice for anyone looking to enhance their generator's reliability.
Standard RY1917 Multi-Function Relay
The Standard Multi-Function Relay is engineered for reliable and consistent performance, ensuring that your vehicle operates smoothly. It is specifically designed to suit your vehicle's needs and your personal driving style. Crafted from high-quality materials, this relay promises exceptional durability, which means you can count on it for a long time. Additionally, it is manufactured to meet or surpass stringent quality standards, giving you peace of mind knowing you are using a trustworthy product. If you have any questions about fitment, support is readily available.
Frequently Asked Questions (FAQs)
1. What relay stops car from starting?
The relay that stops a car from starting is the starter relay. It completes the electrical circuit and boosts the battery's current. If the starter relay is faulty, the electrical signal won't reach the starter motor, preventing the engine from turning over.
2. How does an ignition relay work?
An ignition relay acts as a circuit completer or breaker between the car's battery and the starter motor. It increases the battery's current, reducing the amount of current needed for ignition. This helps ensure efficient starting of the vehicle.
3. Will a car start without an ignition relay?
No, a car cannot start without an ignition relay. When the ignition key is turned or the start button is pressed, a large current is generated. The starter motor requires significant current, which cannot be controlled directly by the ignition switch. Without an ignition relay, the system would burn out and the vehicle would not start.
4. Can a bad ignition relay drain the battery?
Yes, a bad ignition relay can drain the car's battery. The ignition relay is responsible for ensuring that electricity flows from the battery to the different components that require power. If the relay is faulty, it may cause a drain on the battery and make it difficult to start the ignition.
During our car ignition relay research, we found 24 car ignition relay products and shortlisted 10 quality products. We collected and analyzed 4,603 customer reviews through our big data system to write the car ignition relays list. We found that most customers choose car ignition relays with an average price of $14.97.
The car ignition relays are available for purchase. We have researched hundreds of brands and picked the top brands of car ignition relays, including Standard Motor Products, ACDelco, YLQASOON. 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.