Best Blower Motor Cutout Relays of 2026

Robert Reyes Avatar
Robert Reyes
Last Updated: Feb 2, 2026

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Blower motor cutout relays are essential components in heating, ventilation, and air conditioning (HVAC) systems. These relays are designed to protect the blower motor from overheating or damage due to electrical issues. When the relay senses an electrical problem, it cuts off power to the motor, preventing any further damage. This can prolong the lifespan of the blower motor and prevent costly repairs. Blower motor cutout relays are commonly used in residential and commercial HVAC systems and are available in different sizes and specifications to accommodate various types of equipment.

At a Glance: Our Top Picks

Standard Motor Products 1702 TBI Kit - Fuel Injection Metering Parts Cover #TOP 1
Standard Motor Products 1702 TBI Kit - Fuel Injection Metering Parts
ftb score rating icon 9.8
Standard Motor Products 1527D TBI Kit Cover #TOP 2
Standard Motor Products 1527D TBI Kit
ftb score rating icon 9.7
Standard Motor Products TX3 Blower Relay Cover #TOP 3
Standard Motor Products TX3 Blower Relay
ftb score rating icon 9.5

Top 10 Blower Motor Cutout Relays

#TOP 1

Standard Motor Products 1702 TBI Kit - Fuel Injection Metering Parts

Standard Motor Products 1702 TBI Kit - Fuel Injection Metering Parts Cover
Standard Motor Products 1702 TBI Kit

The Standard Motor Products 1702 TBI Kit is an auto part designed for fuel injection metering. It has a package dimension of 9.8" (L) x 6.5" (W) x 2.0" (H) and comes in a package quantity of 1. It is made in China and can improve the performance of your vehicle's fuel injection system.

What We Like
Improves fuel injection system performance
Compact package size for easy storage and transport
Comes in a package quantity of 1 for convenience
#TOP 2

Standard Motor Products 1527D TBI Kit

Standard Motor Products 1527D TBI Kit Cover
Standard Motor ProductsStandard Motor Products 1527D TBI Kit

The Standard Motor Products 1527D TBI Kit is an essential auto part for your vehicle. With its compact package dimensions of 24.892 cms L x 17.526 cms W x 5.08 cms H, this kit is designed to fit perfectly into your vehicle's engine compartment. The package quantity of 1 ensures that you have everything you need in one convenient package. As a blower motor cutout relay, this kit helps to regulate the operation of your vehicle's blower motor, ensuring optimal performance and efficiency. Made by Standard Motor Products, a trusted brand in the automotive industry, this TBI kit is of high quality and reliability. Its country of origin is China. Upgrade your vehicle's blower motor with the Standard Motor Products 1527D TBI Kit and enjoy improved performance and efficiency.

What We Like
Compact size
All-in-one package
Regulates blower motor
#TOP 3

Standard Motor Products TX3 Blower Relay

1 Count (Pack of 1)
Standard Motor Products TX3 Blower Relay Cover
Standard Motor Products TX3 Auto Part

The Standard Motor TX3 Relay is an essential auto part designed to help control your vehicle’s blower motor. Its compact size, measuring just over 7.5 cm in length and 3 cm in width, makes it easy to install in tight spaces. Weighing only half a pound, it is lightweight, which can simplify handling during installation. Made in China, this relay is part of the blower motor cutout category, ensuring it fits specific functions in your car's electrical system. If you need a reliable relay to keep your blower motor working smoothly, this product offers a practical solution.

What We Like
Compact dimensions
Lightweight design
Reliable blower motor relay
Easy installation
#TOP 4

Standard Motor Products TX18 Auto Part

TX18
Assorted
One Size
Standard Motor Products TX18 Auto Part Cover
Standard Motor Products TX18 Auto Part

This blower motor cutout relay has a package height of 0.93 inches, a package length of 2.71 inches, a package width of 1.02 inches, and a package weight of 0.060009 pounds. It is a reliable auto part that can help you solve issues with your blower motor.

What We Like
Reliable
Compact size
Lightweight
#TOP 5

Standard Motor Products 1697 TBI Kit

Standard Motor Products 1697 TBI Kit Cover
Standard Motor Products 1697 TBI Kit

The Standard TBI Kit by Standard Motor Products is an essential auto part for your vehicle. With dimensions of 24.637 cms (L) x 17.272 cms (W) x 5.08 cms (H), this kit is compact and easy to install. Designed for blower motor cutout relays, it helps to regulate the motor's function efficiently. Made in China, this high-quality product offers reliable performance and durability. Whether you're a professional mechanic or a DIY enthusiast, the Standard TBI Kit is a must-have for maintaining the optimal performance of your vehicle's blower motor.

What We Like
Compact Design
Efficient Motor Regulation
Reliable Performance
#TOP 6

Mechanics Choice Blower Motor Relay

PAT-145705
Mechanics Choice Blower Motor Relay Cover
Mechanics Choice HVAC Blower Motor Cut-Out Relay for 1977-1992 Buick, Chevrolet, GMC, Oldsmobile, Pontiac

The Mechanics Choice Relay is designed for easy installation in various classic vehicles, including Buick, Chevrolet, GMC, Oldsmobile, and Pontiac models from 1977 to 1992. This relay features a bracket that is perfectly aligned, ensuring a secure fit. It is crafted using modern manufacturing techniques, which means you can expect high quality and reliability. Additionally, it is made with superior materials compared to the original equipment manufacturer (OEM) parts, providing enhanced durability. You can trust that this direct replacement will work just like the factory unit, making your repair process smoother and more efficient.

What We Like
Easy installation
High-quality materials
Durable and reliable
Direct factory fit
#TOP 7

Standard Motor Products CBS1160 Switch

CBS1160
Assorted
One Size
Standard Motor Products CBS1160 Switch Cover
Standard Motor Products CBS1160 T/S Switch

The Standard T/S Switch is designed specifically for your vehicle, ensuring a perfect fit and optimal performance. Made in China, this genuine switch provides reliable functionality, allowing you to control your vehicle's systems with ease. Its compact package dimensions make it convenient to store and handle. With this switch, you can enjoy peace of mind knowing you are using a quality product from a trusted brand, enhancing your driving experience by maintaining efficient operation of crucial components.

What We Like
Vehicle-specific fit
Genuine Standard product
Compact dimensions
#TOP 8

Standard Motor Products HP5090 Terminal

HP5090
Assorted
One Size
Standard Motor Products HP5090 Terminal Cover
Standard Motor Products HP5090 Ignition Wire Terminal

The Standard Motor Products Terminal is designed for automotive use, making it a reliable accessory for your vehicle. With dimensions of 5.75 inches long, 3.75 inches wide, and only 0.3 inches high, it fits neatly in various spaces, ensuring easy installation. Weighing in at 3.50 pounds, it offers a solid, durable option for your ignition wire needs. Sold as a single unit, this product is convenient for those looking for a straightforward replacement without unnecessary extras. Whether you’re a professional mechanic or a DIY enthusiast, this terminal provides the quality you need for efficient vehicle performance.

What We Like
Compact dimensions
Durable construction
Single unit convenience
Automotive application
#TOP 9

loxilory Blower Motor Relay 53554TD for Chevy C10 1975-1978

loxilory
A86010-53554TD
loxilory Blower Motor Relay 53554TD for Chevy C10 1975-1978 Cover
loxilory for Chevy for C10 4.1L/4.8L/5.7L/7.4L 1975-1978 & 6.6L 1976-1978 & 5.0L 1977-1978 Blower Motor Relay Professional - 53554TD

The loxilory Chevy Relay is designed specifically for Chevy C10 models from 1975 to 1978, covering various engine sizes like 4.1L, 4.8L, 5.7L, 7.4L, 6.6L, and 5.0L. This relay fits perfectly with your vehicle’s blower motor system, ensuring a smooth and reliable connection. It comes with the part number 53554TD, making it easy to identify and replace. Being a professional-grade, brand-new component, it guarantees quality and performance you can count on, giving you peace of mind while driving in any season.

What We Like
Wide engine fitment range
Easy identification part number
Professional-grade new product
Reliable and consistent performance
#TOP 10

Mechanics Choice Blower Motor Relay

PAT-145702
Mechanics Choice Blower Motor Relay Cover
Mechanics Choice HVAC Blower Motor Cut-Out Relay for 1969-1997 Buick, Cadillac, Chevrolet, GMC, Mazda, Oldsmobile, Pontiac, Subaru, Volkswagen

The Mechanics Choice Relay is engineered for a seamless fit in various classic vehicles from 1969 to 1997, including Buick and Chevrolet. This product is built with modern tooling, ensuring top-notch quality and reliability for your HVAC system. By using upgraded materials, it offers better durability compared to original parts, giving you peace of mind. The direct replacement feature allows for easy installation, mimicking the factory unit's performance perfectly. Additionally, rigorous testing ensures that each relay meets high standards for reliability, making it a smart choice for your vehicle's needs.

What We Like
Seamless installation
Durable materials
High quality and reliability
Rigorous testing
Buying Guide Image

Frequently Asked Questions (FAQs)

1. How do you know if a blower motor relay is bad?

To determine if a blower motor relay is bad, you can measure the voltage for both low and high blower speeds. If there is no voltage or an incorrect voltage reading, it indicates a faulty relay or other damaged components in the circuit, such as wiring, resistor, or relay.

2. What does a blower motor relay switch do?

A blower motor relay switch functions as an on/off switch in HVAC systems. It supplies power to the blower motor, allowing the fans to circulate warmed air. By controlling the flow of current between the power source and the motor, the relay initiates and terminates the heating process.

3. What happens when the blower motor resistor goes out?

When the blower motor resistor fails, it can result in a loss of airflow from the vents. The resistor controls the power supplied to the blower motor. Without power, the blower motor cannot produce air pressure, leading to a lack of air circulation.

4. What causes a blower motor relay to fail?

Blower motor relays may fail due to exposure to high current loads, which can cause overheating. In severe cases, the relay may melt or burn, potentially damaging the fuse box or panel. Overheating can occur when the relay develops internal problems or when the relay is subjected to excessive electrical stress.

5. Is blower motor relay important?

Yes, the blower motor relay plays a crucial role in HVAC systems. It supplies power to the blower motor, enabling the circulation of warmed air. Acting as an on/off switch, the relay controls the flow of current between the power source and the motor, initiating and ending the heating process.

6. How do you diagnose a broken relay?

To diagnose a broken relay, you can use a multimeter to measure the resistance between the switch pins. If there is any resistance between the pins, such as on a four-pin relay labeled 87 and 30, it indicates that the pins are stuck closed and the relay is faulty.

Editor's Notes

During our blower motor cutout relay research, we found 24 blower motor cutout relay products and shortlisted 10 quality products. We collected and analyzed 4,457 customer reviews through our big data system to write the blower motor cutout relays list. We found that most customers choose blower motor cutout relays with an average price of $35.74.

The blower motor cutout relays are available for purchase. We have researched hundreds of brands and picked the top brands of blower motor cutout relays, including Standard Motor Products, Sawyer Auto, loxilory. The seller of top 1 product has received honest feedback from 384 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.