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The 8 Best automotive transmission relays of 2025

Are you trying to find automotive transmission 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 transmission 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 13 hours of research and did 16 automotive transmission 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 transmission relays you can buy today

No. 1
Standard Motor Products HR-117 Transmission Relay Assorted, One Size
  • Country Of Origin : China
  • The Package Height Of The Product Is 2.082 Inches
  • The Package Length Of The Product Is 7.381 Inches
  • The Package Width Of The Product Is 5.412 Inches
No. 2
Standard Motor Products RY116 Relay
  • Country Of Origin : China
  • The Package Height Of The Product Is 1.1 Inches
  • The Package Length Of The Product Is 3.0 Inches
  • The Package Width Of The Product Is 1.2 Inches
  • Fit type: Vehicle Specific
No. 3
16" Slim Push Pull 12V Electric Radiator Cooling Fan with Adjustable Electric 12V Radiator Fan Thermostat Control Relay Wire Kit for All Radiators, Oil Coolers, Transmission Coolers
  • ♐ High performance 16 inch reversible 12V electric cooling fan,120 Watts,1000 CFM,2000±10% RPM,10 Blades, ≤9.5 AMP DRAW,Plastic Shroud/Steel Motor
  • ♐ Custom upgraded 120 watt motor produces more CFM air flow volume,Fan motors are sealed to be water and dust resistant, increasing longevity,Fan is configured by default as an air puller out of the box
  • ♐ Adjustable fan thermostat with complete installation wiring kit. Measures liquid or contact temperature and turns on electric fan.
  • ♐ Flexible temperature turn dial control range of 32-250'F (0-120'C). Thermostat can be wired to turn fan on or off when set temperature is hit.
  • ♐ Fitment: Universal design for all radiators, oil coolers, transmission coolers, condensers etc.
No. 4
Genuine Hyundai 95445-39052 Automatic Transmission Control Relay , black
  • Authentic Original Equipment Manufacturer (OEM) part
  • OEM quality
  • Exact part that came with your car
  • Direct fit
No. 5
YzusGomumu 4T65E Automatic Transmission Filter Kit Compatible with 2000-2011 Buick Volvo S80 XC90 Saturn Relay Replaces# 24227477 24206433 24205416 8656345 8646902
  • [Feature] Use 4T65E Transmission Filter Kit to filter oil and remove sundries from the transmission fluids.Keep the transmission fluids clean and prevent the valve body and other parts be clogged.Effectively to extend the service life of the transmissions kit.Please check and change filter if the gear change difficulty,rattling,leaks,and smoke when clogged.
  • [Compatible With] Fit For Buick:2000-2005 LeSabre;2000-2004 Regal;2000-2005 Century;2002-2007 Rendezvous;2005-2007 Terraza;2005-2009 Lacrosse;2008-2009 Lacrosse SSE;2000-2005 Park Avenue;2006-2011 Lucerne;Fit For Volvo:2000-2004 S80;2003-2006 XC90;Fit For Saturn:2005-2007 Relay.Notice:This Kit Compatible With 4T65E Transmission Filter.
  • [OE Number] 24227477 24206433 24205416 8656345 8646902 Please check the part numbers whether it suits your vehicle before purchasing.
  • [Package] 1x automatic transmission filter 1x gasket.Regular replacement of the transmission filter is recommended,by changing the transmission filter regularly,the life of the transmission will be extended and expensive repairs will be avoided.
  • [Warranty] 1 Year Warranty,No Reason Return in 30 Days,our products undergo strict quality inspection before leaving the factory.
No. 6
NewYall Transmission Gear Shift Cable for Pontiac Montana Saturn Relay Buick Terraza Rendezvous Chevrolet Uplander Venture Oldsmobile Silhouette 10340403 19368078 12565602 15299671
  • For Buick Rendezvous 2002-2004
  • For Buick Terraza 2005-2007
  • For Chevrolet Uplander 2005-2009
  • For Chevrolet Venture 2001-2005
  • For Oldsmobile Silhouette 2001-2004
  • For Pontiac Montana 2001-2009
  • For Saturn Relay 2005-2007
No. 7
GKmow 2 PCS Four-pin Automotive Relay, DC 12V 30A Flame-Retardant Housing Waterproof Starting Relay, Multi-Functional Motor Replacement Accessory, Fit for Most Models (Black)
  • Flame-retardant Shell: This car starter relay is made of flame-retardant shell material and has good flame-retardant properties. This means that in the event of a fire or other dangerous situation, it can effectively reduce the possibility of fire spread and improve the safety of vehicles and passengers.
  • DC 12V Voltage: This is the voltage standard used by most cars, so it has broad applicability. This relay is suitable for automotive systems powered by DC 12V power supply.
  • 30A Current Rating: This relay has a current rating of 30A, which means it can handle a maximum current load of 30 amps. This makes it suitable for many high-power devices such as car starter motors.
  • Reliability and Durability: It can withstand long-term, frequent use and maintain stable performance in a variety of environmental conditions. This car starter relay is made of high-quality materials and has good reliability and durability.
  • Packing Content: You will receive two five-pin DC 12V 30A car starting relays. If you have any usage problems, please feel free to contact us directly and we will solve the problem for you within 24 hours on working days.
No. 8
10" Universal Slim Fan Push Pull Electric Radiator 12V 80W High Performance Cooling Fan with Thermostat Wiring Switch Relay Mount Kit Black
  • √ COOLING FAN:6 Blades 12V 80W 10 Inch radiator engine cooling fan.Maximum Fan CFM=800 CFM, Maximum Fan RPM=2400+10% RPM.Overall Diameter (in): 11.42''.Thickness (in): 2.536''.Amp Draw: ≤6Amp.
  • √ THERMOSTAT KIT:180'F turn-on temperature, 165'F turn-off temperature. 3/8" NPT thread-in brass probe w/ 1/2" NPT adapter included
  • √ DESIGN:Slim design provides excellent engine bay clearance.Good heat resistance and corrosion resistance ensure a long service life for the electronic radiator.
  • √ WIDE USE:Universal radiator cooling fan fit various vehicles and engines. It depends on the size of your radiator. Auxiliary equipment for cooling the entire engine compartment, including radiators, air conditioning systems, intercoolers, oil systems, and transmissions.
  • √ SERVICE GUARANTEE:We put the instructions on the main picture for reference. You can contact us if you have any questions.
No. 9
gunhunt 4 PCS 40A Automotive Relays, Car Relay Switch, 5 Pin Relay, 12V Waterproof Car Relay, Trim System Components, Replacement for Car Boat Outboard Motor (Black)
  • Quality Materials: The shell is made of PA66 material and pure copper enameled wire, which has good thermal conductivity, can dissipate heat faster and reduce temperature rise. The compact and repairable structure of the sloped trim relay will hardly break or deform, helping you adjust and switch circuits stably.
  • Plug and Play: Compatible with the most universal 12V 5-Pin automotive relay with a 40A switching capability. Easy to process your demand. Please check the dimensions and the direction of the poles carefully before ordering to avoid buying the incorrect product.
  • Wide Application: Outboard tilt system application and all automotive devices equipped with a 12-volt dc power source car sound systems, security systems, compressor, air.
  • Nice Replacement for Many Relays: The electrical relay box can be a nice replacement for 582195, 582472, 582473, 584416, 586147 and 586224, offering you a pleasant using experience.
  • Sufficient Quantity for Using: The package comes with 4 pieces of automotive replacement electrical system relays, enough to meet your using and replacing demands in daily life, bringing you lots of convenience.
No. 10
BLAU GRUN 4 Pin 12V 30A Multi-Purpose Automotive Relay - Heavy Duty Standard Relay for Car Motor, Universal Replacement Accessory
  • [Reliable Quality] The black shell is made of nylon material, which is electrical insulation, and the pin is made of brass, which can withstand cold and hot condition. Very durable and sturdy in use, no deformation and rust, perfectly made for long-term use.
  • [Specification] The size is 1.41 x 0.94 x 0.63 inch/ 3.6 x 2.4 x 1.6 cm approximately. Our 30A 12V relay can be used to control the circuits of components with high amperage loads on vehicle, such as headlights, fuel pumps and cooling fans.
  • [Easy to Use] Our motor relayis suitable for normal antomobile to use, simple operation, you only need to connect the relay and wire, no need other tools, very convenient and easy to use and replace, allow components work normally.
  • [Application] Our product can be applied to car tail light, engine compartment, electric cooling fans, electric water pumps, electric fuel pumps, shaved door handles solenoids, trunk solenoids and more equipment.
  • [Customer Service] You will receive 4 pieces 12V 30A 5 pin relays. We offer 12-month warranty for every order, you can buy with confidence. If you have any questions and concerns, please feel free to let us know, our team will respond asap!
No. 11
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.
SaleNo. 12
Nilight 50003R Automotive Set 5-Pin 30/40A 12V SPDT with Interlocking Relay Socket and Wiring Harness-5 Pack, 2 Years Warranty
  • High switching capability: Normally open 40A/14V DC and normally close 30A/14V DC. Suitable for Nilight LED light bar wiring harness kit
  • Premium quality: Durable relay and harness socket with 5 wires; Made by high-grade materials to ensure superior quality and long lifespan
  • Male-female slot design: Unique male-female slot design, easy to connect the relay with harness socket, clean and neat after installation
  • Easy wiring: The relay sockets come with different colors for loads/accessories, simple and convenient wiring
  • Package include: 5 x relay and 5 x relay socket with wires.Fit type: Universal fit
No. 13
4PCS 4 Pin 30A 12V Relay for Car - Heavy Duty Starter Relay Multi Purpose Fuel Pump Relay - Universal Automotive Relay with Waterproof Design for Most Truck SUV Car Accessories (4 Pin/4PCS)
  • 🎫【Specification Description】 Automotive relay is a critical electrical component used to control and protect vehicle circuits. You will receive the relay with the size of about 0.88x0.58x1.44 inch, the contact capacity is 12V 30A, the maximum switching power is 420W, for more specification information please check the product description, please check it carefully before purchase!
  • 🎫【Waterproof Flame Retardant Shell】 Our fuel pump relay is usually equipped with high-temperature resistant, waterproof and flame-retardant housings to ensure their proper operation. These housings can effectively resist the intrusion of external substances such as water, dust, oil and so on, and can maintain the reliability and lifespan even under complicated working environments.
  • 🎫【Good Conductivity & Stable Performance】 This starter relay features silver alloy contacts for good conductivity. Built-in all-copper solenoid coil makes the operate more reliable and precise. The copper coil also allows for lower temperature rise, and maintains stable performance under long working hours and frequent switching conditions to ensure the normal operation of the vehicle.
  • 🎫【Wide Range of Application】 Our AC relay have a wide range of applications for cars, trucks, SUVs or RVs, and can be used to control a variety of electrical devices in the vehicle, such as lights, horn, air conditioning, and so on. It can be selected and installed according to different needs and circuit designs, providing flexible and reliable control functions.
  • 🎫【After-sales Guarantee】 Quality car relay kit suppliers will provide good after-sale guarantees, including product quality assurance, technical support and after-sale service. These guarantees can help users solve any problems that may arise and ensure the long-term use of the relay. If you encounter any problems during the use, please contact us immediately.
No. 14
5 Pin 12V Relay 12V 30A Relay Multi-Purpose Automotive Starter Relay Heavy Duty Standard Relay for Car Motor, Auto Replacement Accessories (4 Packs)
16 Consomer Reviews
5 Pin 12V Relay 12V 30A Relay Multi-Purpose Automotive Starter Relay Heavy Duty Standard Relay for Car Motor, Auto Replacement Accessories (4 Packs)
  • High Quality: Made of high-temperature flame-retardant plastic, more safe and reliable.
  • Silver Alloy Pin: Increase the stability and sensitivity of contact, stronger conductivity, and greater current carrying capacity.
  • Product number: The product is not suitable for all models and brands, please check the specifications carefully to confirm whether it is applicable before purchasing, the product is 12V 30A 5 Pin Relay.
  • Widely Use: the 30A 12V automotive relay can be applied to control electrical circuits for components on a vehicle that have a high amperage load, such as headlights, fuel pumps and cooling fans
  • Package Include: 4 PCS 5 pin relays, the size is about 1.41 x 0.94 x 0.63 inch/ 3.6 x 2.4 x 1.6 cm, which can fully meet your daily use and replacement.
No. 15
Miytsya 4 Pack Car 5 Pin Relay Switch 12V 30A SPST, Waterproof Stable Relay, Multi-Purpose Relay Heavy Duty Standard Relay Kit, Universal for Car Motor Replacement Accessories (Black)
  • ★ Specifications: You will receive 2/4 12V 30A 5-pin relays measuring approximately 1.41 x 0.94 x 0.63 inches / 3.6 x 2.4 x 1.6 cm. The 30A 12V relays can be used to control the circuits of components in vehicles with high current loads, such as headlights, fuel pumps and cooling fans.
  • ★ Quality Material: The power relay assembly is made of High quality composite and the pins are made of brass to withstand hot and cold conditions. Durable, rugged, unbreakable and corrosion resistant, they will support you for a long time and are suitable for replacement and repair of AC relays.
  • ★ Smooth Running: The housing is protected from harsh temperatures and hood conditions, for extended wear. All parts are manufactured to exacting quality requirements. Relays play an important role in the ever-increasing number of automotive electronics.
  • ★ Widely Used: Starter relays can be commonly used in air conditioning compressor fan motors, starters, headlights, horns, ignitions, fog lights, headlights, fans, rear window defrosters, blower motors, cargo lights, running lights, oxygen (O2) sensor relays, fuel pump/disconnect relays, and other accessories.
  • ★ Easy to Use: The motor relay is suitable for normal automobile use and simple to operate, you just need to connect the relay with the wire, no other tools needed, convenient for your use and replace, allowing your components to work properly.
No. 16
X AUTOHAUX Car Automatic Transmission Filter Oil Pan Gasket 24206433 for Saturn Relay 2005-2007
  • OE Number: 24206433, 24205416, 24227477, 8656345, 8646902. Please carefully verify the fitment in the product description or check your parts pictures and part number before purchasing.
  • Specifications: Condition: Brand New, Materials: Stainless Steel, Rubber, Color: Black, Silver Tone, Hole Size: 7mm / 0.28", Size: 47x32cm / 18.50"x12.59"(L*W)
  • Easy Installation: Easy to install, durable, made of Stainless Steel and Rubber materials to improve reliability and durability.
  • Designed to prevent pan leaks, ensures transmission longevity when replaced at regular service intervals.
  • Package Includes: 1 x Transmission Filter Oil Pan Gasket
No. 17
BACKVOLT Automatic Transmission Control Lever Cable, Compatible with Buick Rendezvous, Terraza, Chevrolet Uplander, Venture, Oldsmobile Silhouette, Pontiac Montana, Saturn Relay, Replace 19368078
  • 【Excellent Quailty】Our automatic transmission shift cable features premium quality and is perfect for your vehicle and lifestyle. It is manufactured to meet or exceed stringent industry standards.
  • 【Perfect Match】Compatible With 2002-2005 Buick Rendezvous; Compatible With 2005-2007 Buick Terraza; Compatible With 2005-2009 Chevrolet Uplander; Compatible With 2001-2005 Chevrolet Venture; Compatible With 2001-2004 Oldsmobile Silhouette; Compatible With 2001-2009 Pontiac Montana; Compatible With 2005-2007 Saturn Relay
  • 【Reference number】19368078,10340403,141296. Total length: 62.99''
  • 【Warranty】Every BACKVOLT direct fit replacement is backed by our industry-leading 12-month warranty.
  • 【Customer Support】Please Check the Fitment Before Buying. If you have any questions about the item, please feel free to contact us. We will reply to you within 12 hours.
SaleNo. 18
Standard Motor Products RY116T Relay
  • Pvp
  • Standard Motor Products Ry116T
  • Package Height: 7.6 Centimeters
  • Item Package Weight: 0.59 Pounds
No. 19
Hosyond 5 Pack 12V DC 40/30 AMP Waterproof Relay Harness Tinned Copper Wires 5-PIN SPDT Automotive Relay Car Relay
  • 12VDC (14V max) waterproof 5-pin SPDT (Single Pole Double Throw) pure copper coil relay with 40A/30A high switching capability.
  • The relay harness is encapsulated with a rubber ring, which is waterproof and dustproof. Fixed metal holes for easy installation.
  • Pure copper core cable, tinned brass pins, with higher conductivity and more stable performance. 3*14 AWG and 2*18 AWG, Length: 5 inches.
  • Wire Sizes: White - Ground (85), Blue - VDC (30), Black - Trigger (86), Red - Output N/C (87a) and Yellow - Output N/O (87).
  • The relay kit is made of high-grade flame-retardant materials to ensure safe use and long service life.
SaleNo. 20
Nilight 10 Pack SPDT Bosch Style Electrical Relays 12V 30/40 Amp 5-Pin Switch for Automotive Truck Marine Boat,2 Years Warranty
  • 5 Pin SPDT (Single Pole Double Throw) Bosch Style Electrical Relay.
  • 40A/30A High Switching Capability. These relays have a universal application and can be used in a 12 Volt DC power source, such as automotive setups, car sound systems, security systems, and various other applications.
  • Pin Specifications: 30V DC. Ground (85), Trigger (86), Output N/C (87a), and Output N/O (87).
  • Maximum Applied Voltage: 15.6 V DC; Max Operating Voltage is 27V DC; Nominal Coil Voltage: 12 V DC; Max Operating Current: 40A; Must Operate Voltage: 6~8 V DC; Must Release Voltage: 0.6~3.6 V DC; Coil Power: 1.8 W; Coil Resistance: 80 Ω; Insulation Resistance: 100MΩ
  • Package include: 10 pack electrical relays. Sockets are not included

How to choose a good automotive transmission relays

Does the idea of finding a fantastic automotive transmission 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 transmission 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 transmission 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 transmission 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 transmission 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 transmission 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 transmission 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 transmission 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 transmission relays.

Durability: Durability and reliability are closely related concepts. You will benefit from a strong and long-lasting automotive transmission 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 transmission 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 transmission 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 transmission relays.