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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.
Never go beyond its capabilities. Try to stay 10 to 15% below what the rate is for
12-volt 5-prong (SPDT) relay. Excellent water-repellent and dustproof ability, but do not use 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
Integrated Diode: Each relay includes a built-in diode that suppresses induced voltage during switching, safeguarding your electrical components from potential damage.
Small size/Low power consumption/High contact voltage/ High sensitivity.
Contact Material: Ag Alloy / Contact Resistance: ≤ 100MΩ.
Minimum operating voltage 8V, corresponding minimum operating current is 100mA; Standard operating voltage 12V, corresponding standard operating current is 150mA.
Life Expectancy Electrical: 100,000 Operation, Life Expectancy Mechanical: 10,000,000 Operation.
Upgraded Version - Automotive relays built in fuse socket included 30A blade fuse with heavy duty 14AWG wires for main contact. no need of a separate fuse holder, saving space and money. 4-Pin SPST (Single Pole Single Throw) Relay.
Mounting Design Feature - The interlocking mounting design of unique male and female slot on each socket edge, connect relays together and manage cables easily, offering clean and neat installation.
Easy Wiring - The relay sockets come with color-labeled wires for load/accessories convenient wiring. Black - Ground (85), Red - VDC (30), White - Trigger (86), Blue - Output N/O (87)
Wide Application - Widely used in car keys power control, over-load protection, trunk release, polarity change, power door lock/actuator control, change a low current output to high current, add ignition/accessory outputs, control motors/other electronics...
Set includes 5 relays, 5 relay harnesses, and 5 30A blade fuses.
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
HEAVY-DUTY 70A CAPACITY: Engineered to handle extreme electrical loads up to 70 Amps.
DURABILITY: Features a rugged, vibration-resistant, and weather-sealed enclosure to withstand the extreme heat and dirt found in agricultural and construction equipment.
PLUG & PLAY DESIGN: Features a standard 4-Pin configuration, plugs directly into your factory fuse box or relay block for a fast, hassle-free installation.
WIDE EQUIPMENT FITMENT: The go-to starter and glow plug relay for heavy-duty diesel engines, mini excavators, tractors, and skid steers. Also ideal for high-amp custom automotive upgrades like dual cooling fans or heavy-duty winches.
Last update on 2026-09-01 / 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.
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