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The Best Automotive Replacement Glow Plug Relays

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Our picks are based on Amazon bestseller rankings, verified customer ratings, and product availability. We update our recommendations regularly to ensure accuracy.

Ensuring your diesel engine starts reliably, especially in colder temperatures, depends heavily on a functional glow plug system. The relay is a critical component, controlling the power flow to the glow plugs. Selecting a high-quality replacement relay can prevent starting issues and protect other electrical components from damage.

No. 1
Glow Plug Controller Relay E7TZ-12B533-A Fit for Ford F250 F350 E250 E350
  • Replace Part Number:for FOTZ-12B533-A, FOTZ12B533A, E7TZ-12B533-A, E7TZ12B533A, E9TZ12B533-A, E9TZ12B533A, F6TZ-12B533-AA, F6TZ12B533AA, F7TA-12B533CA, F7TA12B533CA, F7TZ-12B533-A, F7TZ12B533A, DY1128, DY1023, RY316 RY-316, RY175, RY-175, RY175T, RY-175T...
  • Compatible With:Glow Plug Module Controller Fits for 1987-1994 Ford 7.3L International IDI Diesel Engines: for Ford F250 1987-1994, for Ford F350 1987-1994, for Ford E250 1988-1989, for Ford E350/E350 Super Duty 1988-1994, for Ford F Super Duty...
  • Package Included: 1 x Glow Plug Controller Relay
  • Easy to install:Our car parts are easy to install. Even without specialized skills, you can use basic tools like wrenches and screwdrivers to complete the installation. The installation process is quick and easy, saving you time and energy. Get your car...
  • High Quality and Durable:This car accessory is made of high quality material, which is rigorously tested and sturdy. It is wear-resistant, corrosion-resistant, impact-resistant and performs well in any weather or driving conditions. It can be used for a...
SaleNo. 2
Dorman 904-194 Diesel Glow Plug Relay
  • Direct replacement - this diesel glow plug relay is designed to match the fit and function of the original relay on specified vehicles
  • Ideal solution - this relay is a reliable replacement for an original part that is damaged or has failed due to fatigue
  • Durable construction - this relay is made from quality components to ensure reliable performance and a long service life
  • Trustworthy quality - backed by team of product experts in the United States and more than a century of automotive experience
  • Ensure fit - to make sure this part fits your exact vehicle, input your make, model and trim level into the garage tool
No. 3
Dorman 904-100 Diesel Glow Plug Relay
  • Direct replacement - this diesel glow plug relay is designed to match the fit and function of the original relay on specified vehicles
  • Ideal solution - this relay is a reliable replacement for an original part that is damaged or has failed due to fatigue
  • Durable construction - this relay is made from quality components to ensure reliable performance and a long service life
  • Trustworthy quality - backed by team of product experts in the United States and more than a century of automotive experience
  • Ensure fit - to make sure this part fits your exact vehicle, input your make, model and trim level into the garage tool
No. 4
E7TZ-12B533-A Glow Plug Controller Relay Compatible with Ford
  • Ensure Fit: This glow plug controller will fit for Ford F250 1987-1994, for Ford F350 1987-1994, for Ford E250 1988-1989, for Ford E350/E350 Super Duty 1988-1994, for Ford F Super Duty 1990-1994, for Ford F59 1990-1994.
  • Replace Part Number: FOTZ-12B533-A, FOTZ12B533A, E7TZ-12B533-A, E7TZ12B533A, E9TZ12B533-A, E9TZ12B533A, F6TZ-12B533-AA, F6TZ12B533AA, F7TA-12B533CA, F7TA12B533CA, F7TZ-12B533-A, F7TZ12B533A, DY1128, DY1023, RY316 RY-316, RY175, RY-175, RY175T, RY-175T...
  • Premium Materials: Made with high-quality materials, offering excellent durability and heat resistance to ensure stable performance under extreme conditions, prolonging service life.
  • Precise Control: Provides accurate voltage and temperature control, ensuring the glow plugs heat up quickly and maintain smooth engine startup in cold weather.
  • Direct Replacement: Easy installation with a plug-and-play design, no additional modifications or special tools required, directly replaces the OEM part, saving time and effort.
No. 5
JEENDA Glow Plug Relay 119650-77910 for YANMAR NGK G71Su, John Deere, Cub Cadet
  • Votage:12V
  • Part Number:119650-77910 11965077910 16415-65600 1641565600
  • Glow Plug Relay Compatible with YANMAR NGK G71Su , John Deere, Cub Cadet
  • Preheating Relay 16415-65600 1641565600 for Kubota 12V
  • New Aftermarket Relay.Good Durability,Reliability, High Performance
No. 6
JDMSPEED New Diesel Glow Plug Relay Solenoid Replacement for Ford 7.3L Power Stroke Diesel Pickup
  • REPLACE PART NUMBER 1: DY838, DY861, 1825908C1, 1825931C1, 1825931C2, 1831646C1, F4TZ12B533A, F5TZ12B533A, F6TZ12B533A, F7TZ12B533AA, F7TZ12B533AB, F7TZ12B533C, F81Z12B533AA, F81Z12B533AC
  • REPLACE PART NUMBER 2: F4TZ-12B533-A, F5TZ-12B533-A, F6TZ-12B533-A, F7TZ-12B533-AA, F7TZ-12B533-AB, F7TZ-12B533-C, F81Z-12B533-AA, F81Z-12B533-AC. Please confirm the OE number carefully before purchasing
  • COMPATIBILITY 1: The glow plug relay solenoid Replacement For Ford E350 Van V8 7.3L Turbo Diesel 1995-00, Replacement For Ford E550 Van V8 7.3L Turbo Diesel 2003, Replacement For Ford Excursion V8 7.3L Turbo Diesel 2000, Replacement For Ford F250 Super...
  • Replacement For Ford F-250 F-350 F-450 F-550 Super Duty Glow Plug for 7.3L 445Cu. In. V8 DIESEL OHV Turbocharged 1999-2002
  • Professional installation is highly recommend.(No Instruction Included)
  • Specification: Flat mounting base, Number of Terminals: 4, Voltage: 12; Professional installation is highly recommend (No Instruction Included)
  • ADVANTAGE: This relays solenoid& glow plug is easy to install, does not require a lot of time and effort, excellent workmanship, durability and practicality, and will fit your vehicle
SaleNo. 7
JZGRDN Glow Plug Relay & Controller 16415-65600 16415-65660 16415-65662
  • Part Name: Glow Plug Relay & Controller Kit
  • Part Number: 16415-65600 16415-65662 16415-65660
  • Compatible with Kubota D902 D905 D1005 V1305 V1505 L3710
  • Compatible with Kubota D722 D902 D905 D1105 V3300 L3710
  • Condition: New
  • Package Include: Glow Plug Relay *1 & Controller *1
No. 8
Lisnhlin AM138537 S500-B100 Glow Plug Relay Module Replacement for John Deere 4X2 4X4 6X4 755 855 F735 F...
  • Compatibility: Compatible with John Deere Gator Models: 2020, 2030, 2030A, 4X2HPX & 4X4HPX Diesel-Gas, 4X2 & 6X4 Diesel-Trail-Worksite Gators, Military 6X4 A1 & M-Gator, TH 6X4, XUV850D. Compatible with John Deere 4X2, 4X4, 6X4, 755, 855, F735, F...
  • Compatibility: Compatible with John Deere Compact Tractor Models: 655, 755, 756, 855, 856. Compatible with John Deere Riding Mower Models: F735, F915, F925, F9355
  • Replace Part Number: AM138537, AM100819, 203684-0000, 194437-0000, S500-B100. Precisely compatible, easy to install, plug and play
  • Enhanced Performance: Carefully designed to provide reliable glow plug control function, ensuring smoother engine starts in cold weather and reducing the problem of difficult start-up
  • Reliable Quality: Manufactured using advanced technology and high-temperature resistant materials, it offers exceptional durability and stability, capable of enduring long hours of high-load operation to ensure reliable performance
No. 9
AdvanEX Diesel Glow Plug Control Relay Switch Module Compatible with Ford F250 F350 F450 E350 E450 E...
  • Application: Compatible with 2003-2005 Ford E350 Club Wagon, 2000-2002 Ford E350 Econoline Club Wagon, 2000-2010 Ford E350 Super Duty, 2000-2002 Ford E450 Econoline Super Duty, 2003-2010 Ford E450 Super Duty, 2002 Ford E550 Econoline Super Duty...
  • OE Part Number: 904-282, DY876, RY467, YC3Z12B533AA
  • Strict Quality Control: The diesel glow plug control relay modules are made of ABS and metal material for durability, heat resistance and wear resistance. And all our products undergo relevant strict tests to ensure their work life
  • Function: The diesel glow plug control relay modules are used to control the operation of the glow plugs in diesel engines. During cold starts, it energizes the glow plugs to heat up, raising the temperature in the combustion chamber and improving cold...
  • Note: If you encounter any problems during use, before you provide your own feedback and comments on our products, please leave us a message and we will give you a satisfactory solution in time. Please use the year/brand/model drop down bar to confirm...
No. 10
GELUOXI DY-876 Diesel Glow Plug Control Relay Module Glow Plug Switch Replacement for 1999-2010 Ford F250 F...
  • 🚗【OEM Part Number】: Diesel Glow Plug Control Module: DY-876 YC3512B533AA, YC3Z12B533AA, 904282, DY876, RY467, 1R1391, 904-282
  • 🚗【Compatibility】: Diesel Glow Plug Control Module Replacement for All 2003-2010 6.0L Powerstroke; Replacement for 2008-2010 6.4L Powerstroke; Replacement for 2000-2003 7.3L Powerstroke Truck with Emissions Only; Replacement for 2000-2003 7.3L...
  • 🚗【Direct Fit Replacement】: Our Glow Plug Control Module Is Engineered To Perfectly Replace The Original Module In Your Powerstroke Diesel, Ensuring A Hassle-Free Installation And Compatibility With Various Models.
  • 🚗【Durable Construction】: Built With High-Quality Materials, Our Module Withstands Extreme Temperature Fluctuations And Harsh Engine Environments, Guaranteeing Long-Lasting Performance And Reliability.
  • 🚗【After Purchase】: Within 6 Months, Should You Encounter Any Issues With This Glow Plug Control Module, Our Dedicated Team Is Always Ready To Assist You, Ensuring Your Satisfaction And Optimal User Experience. Please Check The Adaptability...

Last update on 2026-09-01 / Affiliate links / Images from Amazon Product Advertising API

How to Choose the Best Automotive Replacement Glow Plug Relays

Understanding Glow Plug Relays

The glow plug relay acts as a powerful switch, receiving a signal from the engine control unit (ECU) to activate the glow plugs. These plugs heat the combustion chamber, aiding ignition in diesel engines. When the relay fails, the glow plugs won't receive power, leading to hard starting or no-start conditions, particularly in cold weather.

Key Features to Consider

  • Compatibility: Always verify the relay's compatibility with your specific vehicle's make, model, and year. Refer to your owner's manual or consult a parts catalog.
  • Material Quality: Look for relays constructed from durable materials that can withstand the heat and electrical demands of the engine bay. High-quality terminals ensure good conductivity and prevent corrosion.
  • Performance Specifications: Ensure the relay's voltage and amperage ratings match or exceed the original equipment manufacturer (OEM) specifications for safe and effective operation.
  • Brand Reputation: Opt for reputable brands known for producing reliable automotive electrical components. This often translates to better longevity and performance.

Installation and Maintenance

Replacing a glow plug relay typically requires basic mechanical knowledge and tools. It's usually located near the battery or fuse box. Disconnect the battery before attempting replacement to avoid electrical shorts. If unsure, professional installation is recommended. Regular checks of the glow plug system, including the relay, can help preemptively identify issues.

Frequently Asked Questions

What are the signs of a failing glow plug relay?
Common symptoms include difficulty starting, especially in cold weather, and a 'check engine' light or a glow plug indicator light that stays on or flickers. The engine may also run roughly or stall shortly after starting.
Can I drive with a bad glow plug relay?
While your vehicle might still run, a faulty relay will significantly impair starting, especially in low temperatures. It's best to address the issue promptly to ensure reliable operation and prevent potential further damage to the electrical system.
How long does a glow plug relay typically last?
The lifespan of a glow plug relay can vary depending on vehicle usage, climate, and the quality of the component. However, they are generally designed to last for many years and thousands of operating hours under normal conditions.
Do I need to replace all the glow plugs when replacing the relay?
Not necessarily. The relay is a separate component that controls the power to all glow plugs. However, if your glow plugs are old or have been failing, it might be a good time to consider replacing them simultaneously for optimal performance.
Is a direct replacement always the best option?
A direct replacement that meets or exceeds OEM specifications is usually the best choice for guaranteed compatibility and performance. Aftermarket options from reputable brands can also be excellent alternatives.