Diesel engine performance relies heavily on the proper functioning of its glow plug relay. This critical component preheats the combustion chambers, ensuring reliable starting, especially in colder temperatures. Selecting a high-quality replacement relay is essential for maintaining your diesel vehicle's efficiency and longevity.
Looking for the best Automotive Replacement Diesel Relays?
Discover now our comparison of the best Automotive Replacement Diesel Relays. It is never easy to choose from the wide range of offers. On the market, you will find an incalculable number of models, all at different prices. And as you will discover, the best Automotive Replacement Diesel Relays are not always the ones at the highest prices! Many criteria are used, and they make the richness and relevance of this comparison.
To help you make the best choice among the hundreds of products available, we have decided to offer you a comparison of the Automotive Replacement Diesel Relays in order to find the best quality/price ratio. In this ranking, you will find products listed according to their price, but also their characteristics and the opinions of other customers. Also discover our comparisons by categories. You won’t have to choose your products at random anymore.
No. 1
4 PCS Relays, 5 Pin Relay, 40A Waterproof Car Relays, 12V Relay Switch for Electric Cooling Fans, Motor...
- Quality Material: The a/c relay housing is made of PA66 flame-retardant material with pure copper enameled wires to ensure excellent heat dissipation and magnetism, which enhances resistance to high temperatures and arc erosion, providing excellent...
- Excellent Waterproof Performance: The fuel pump relay base is sealed and waterproof with IP67 protection level, waterproof and dustproof, able to work stably in all kinds of humid environments, ensuring long-term reliability and durability of the relay
- Relay Specifications: Package contains four starter relays, each model number JD1914-12V-40A, five-pin design, size 1.07 x 0.98 inches, coil power 1.8 watts, coil resistance 90Ω
- Easy Installation: The five-pin design of the radiator fan relay makes it easy to replace an existing relay by simply connecting the appropriate wires to the corresponding pins. No additional tools are required, making the installation process easy and...
- Wide Application: The relays are widely used in a variety of electric vehicles such as automobiles, motorboats, etc. The relay box can be a nice replacement for 582195, 582472, 582473, 584416, 586147 and 586224. They can also be used in a variety of...
SaleNo. 2
Nilight 50003R Automotive Set 5-Pin 30/40A 12V SPDT with Interlocking Relay Socket and Wiring Harness-5 Pack...
- 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
−10%
$12.15
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No. 3
2-Pack SEV8-P-112DM Relay - 70A 12VDC 4-Pin SPST Automotive Relay - Compatible with Tyco VF4-1411 - Heavy-Duty...
- Extreme Current Capacity - Handles 70A@12VDC loads for diesel starters & winches
- Industrial-Grade Durability - Silver-tin oxide contacts withstand 100,000+ cycles
- Universal Replacement - Direct swap for Tyco VF4-1411 in Freightliner & CAT equipment
- Error Code Resolution - Fixes P068A (ECM/PCM Power Relay) & P0230 (Fuel Pump Circuit)
- IP67 Waterproof Design - Sealed epoxy housing for marine/off-road environments
No. 4
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
No. 5
Dorman 904-100 Diesel Glow Plug Relay Compatible with Select Chevrolet / GMC Models
- 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
$47.78
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No. 6
Ohleats 4-Pack 4 Pin 12V 30A Heavy Duty Stable Relay Replacement for Motor Automotive, Multi-Purpose...
- 【Practical Function】: There are 4 pin and 5 pin relays to choose from. You can also choose a 2-pack or 4-pack. These 12V 30A relays can be used to control the circuits of high-current load components on vehicles, allowing the components to function...
- 【Safety Design】: It adopts silver alloy contact design, and the surface is not easy to oxidize. The all-copper electromagnetic coil can make the temperature rise lower and the suction power stronger. It can withstand larger currents, making working...
- 【Reliable Quantity】: The shell of this relay is made of black plastic material, which has excellent insulation and is waterproof and flame retardant. Its pins are made of copper, which has good electrical conductivity and is not easy to deform and...
- 【Easy to Use】: The operation of the car relay is very simple. There is no need other tools, just connect the relay with the wires. Plus, it is small and compact in size which makes it easy to store in a toolbox at home or in the trunk of your car for...
- 【Wide Application】: This relay is versatile. It can be widely used in automobile taillights, engine compartments, electric cooling fans, electric water pumps, electric fuel pumps, shaving door handle solenoid valves, trunk solenoid valves and other...
No. 7
KVAEY 4 PCS 30A Starter Relay, 5 Pin 12 V Multi-Purpose Relays, Waterproof Heavy Duty Auto Relay, Automotive...
- High Quality Material: The shell is made of high-quality plastic with good thickness and smoothness, which is sturdy and durable and will not deform or rust. It has excellent insulation, waterproof and flame retardant, and is safe and secure. The pins are...
- Silver Alloy Contacts: The starter relay adopts silver alloy contact design, which increases the stability and sensitivity of the contact. Makes it more conductive and has a larger current carrying capacity. Its surface is not easy to oxidize, cold and...
- All-Copper Coil: The interior of the starter relay adopts all-copper electromagnetic coil. It has lower temperature rise, stronger suction which can withstand larger current, achieving safer and more stable working performance. Furthermore, it is...
- Easy to Install: The starter relay is simple to install, without complicated steps and other tools. Just connect the relay with wires, it will be able to automatically adjust and protect the circuit and act as a current switch, so that your components can...
- Wide Application: In automobiles, our relays can be used to control the circuits of components with high current loads on the vehicle to ensure safe driving. Therefore, it can be widely used in automobile taillights, engine compartments, electric cooling...
No. 8
ACDelco Gold D1724C (89057568) Multi-Purpose Relay
- Professional, premium aftermarket replacement
- Provides the performance and dependability you expect from ACDelco
- Manufactured to meet expectations for fit, form, and function
$14.99
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No. 9
irhapsody 5 Pack 40/30 AMP 12V DC Waterproof Relay Kit with Heavy-Duty Pigtail, 5-PIN SPDT Automotive Relay
- Never go beyond its capabilities. Try to stay 10 to 15% below what the rate is for
- 12-volt 5-prong relay. Excellent water-repellent and dustproof ability, but not using it in water
- Be careful when inserting the relay into the socket. If you force it, you will bend the female connectors
- Primary leads use 12 a.w.g tinned copper wire. Coil leads use 16 a.w.g
- Nominal Coil Voltage: 12 V DC; Coil Power: 1.8 W; Coil Resistance: 80 Ω; Must Operate Voltage: 6~8 V DC; Must Release Voltage: 0.6~3.6 V DC; Maximum Applied Voltage: 15.6 V DC
No. 10
Dorman 904-194 Diesel Glow Plug Relay Compatible with Select Ford Models
- 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
$44.49
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Last update on 2026-03-31 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best Automotive Replacement Diesel Relays
Choosing Reputable Brands
Opt for relays from well-established manufacturers known for their commitment to quality and reliability in automotive parts. Researching brand reputation and reading reviews from other diesel vehicle owners can provide valuable insights. Choosing a trusted brand ensures you are investing in a part that meets rigorous performance standards and is designed for longevity.Frequently Asked Questions
How do I know if my diesel glow plug relay is failing?
Signs of a failing relay include difficulty starting, especially in cold weather, prolonged cranking, and the glow plug indicator light not illuminating or staying on too long. Your vehicle may also experience rough idling or misfires.
Can I use a relay from a different vehicle model?
It is highly recommended to use a relay specifically designed for your vehicle's make and model. Different vehicles have varying electrical systems and specifications, and an incompatible relay may not function correctly or could cause damage.
What is the lifespan of a diesel glow plug relay?
The lifespan of a diesel glow plug relay can vary depending on the quality of the unit, driving conditions, and climate. However, most high-quality relays are designed to last for many years and thousands of engine cycles.
Are all diesel relays the same?
No, diesel relays are not all the same. They differ in their voltage ratings, amperage capacity, physical dimensions, and the number of terminals, all of which must match your vehicle's requirements.
How often should I replace my diesel glow plug relay?
There is no set replacement interval for glow plug relays. They should be replaced when they fail or show signs of malfunction. Regular maintenance checks can help identify potential issues early.
