Plumbing & Electrical

The Best Automotive Replacement Glow Plug Switches

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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.

A faulty glow plug switch can leave your diesel engine struggling to start, especially in cold weather. Selecting the correct replacement ensures reliable ignition and prevents potential engine damage. This guide will help you navigate the options and find the best switch for your vehicle's needs.

No. 1
FridayParts Glow Plug Switch 6668927 Compatible for Bobcat 553 751 753 763 773 863 864 873 Skid Steer Loader
  • New Aftermarket Parts
  • Part Number: 6668927
  • Compatible for Bobcat 553 751 753 763 773 863 864 873 Skid Steer Loader
  • Any problem please feel free to contact us, thanks.
No. 2
Recmod Glow Plug Switch 6668927 fit for Bobcat Skid Steer Loader 553 751 753 763 773 863 864 873
  • Recmod Aftermarket Switch fit for Bobcat Skid Steer Loader
  • Part Name: Glow Plug Switch
  • Part Number: 6668927
  • Glow Plug Switch For Bobcat Skid Steer Loader:553, 751, 753, 763, 773, 863, 864, 873
No. 3
Motorcraft DY861 Glow Plug Switch
  • Resists abrasion and corrosion
  • Made of high quality
  • Highly durable and reliable
  • Easy installation
  • Manufactured under stringent standards
No. 4
Motorcraft DY876 Glow Plug Switch
  • Resists abrasion and corrosion
  • Made of high quality
  • Highly durable and reliable
  • Easy installation
  • Manufactured under stringent standards
No. 5
28610-54360 056800-1001 12VDC 4Pins Automotive Glow Plug Relay
  • Glow Plug Functionality: The 28610-54360 relay is specialized for controlling glow plugs in automotive systems, ensuring efficient and reliable operation.
  • Part Number Compatibility: Compatible with 056800-1001, this relay seamlessly integrates with corresponding automotive systems designed for glow plug control.
  • Operating Voltage: Running at 12VDC, this relay provides a stable power supply crucial for activating and controlling glow plugs effectively.
  • Four-Pin Design: Featuring a four-pin configuration, this relay ensures efficient connectivity and compatibility with various automotive setups.
  • Dependable Performance: Engineered for durability, the 28610-54360 relay delivers consistent and dependable performance in managing glow plug functions within automotive systems.
No. 7
YIHETOP Glow Plug Switch 6668927 Compatible for Bobcat Skid Steer Loader 863 873 553 751 753 763 773
  • Part Number: 6668927
  • Compatible with Bobcat FC Series Skid Steer 553 751 753 763 773 863 873
No. 8
OS Engines 71615009 Type F Glow Medium Plug
  • FEATURES: Specially shielded long-reach plug for use in four stroke engines. Shield keeps plug hot for lower idle RPM
  • INCLUDES: One #F Glow Plug (without idle bar) One brass glow plug gasket. ir/jl update jxs 3/23/05
  • INCLUDES: One #F Glow Plug (without idle bar) One brass glow plug gasket. ir/jl update jxs 3/23/05
No. 9
Motorcraft DY860 Glow Plug Switch
  • Resists abrasion and corrosion
  • Made of high quality
  • Highly durable and reliable
  • Easy installation
  • Manufactured under stringent standards
No. 10
GM Genuine Parts 9G (12639701) Glow Plug (Pack of 1)
  • Designed to give diesel engines the heat they need for cold starts
  • GN-type regulating coil
  • Self-regulating to control electrical flow from the battery as temperatures rise to avoid overheating
  • Full range of reaches - from 21 mm to 40 mm - to meet chamber requirements in a wide variety of applications

Last update on 2026-07-19 / Affiliate links / Images from Amazon Product Advertising API

How to Choose the Best Automotive Replacement Glow Plug Switches

Understanding Glow Plug Switches

The glow plug switch, also known as a glow plug timer or controller, is a critical component in diesel engines. Its primary function is to regulate the power supplied to the glow plugs, which preheat the combustion chamber. This preheating is essential for cold starts, ensuring the diesel fuel ignites efficiently. A failing switch can manifest as slow cranking, rough idling after starting, or complete failure to start.

Key Features to Consider

  • Compatibility: Ensure the switch is designed for your specific vehicle's make, model, and year. Engine size and specific diesel systems can vary significantly.
  • Material Quality: Look for switches made from durable materials that can withstand the heat and vibration typical of an engine bay. High-quality internal components contribute to longevity.
  • Voltage and Amperage: Verify that the switch's electrical specifications match your vehicle's requirements to prevent electrical damage.
  • Brand Reputation: Opt for reputable brands known for producing reliable automotive electrical components. Researching user reviews can provide insights into a product's performance and durability.

Installation and Maintenance

Replacing a glow plug switch typically requires some mechanical aptitude and basic tools. It's often located near the battery or fuse box. If you're not comfortable with automotive electrical work, professional installation is recommended. Regular checks of your vehicle's starting system can help identify early signs of a failing switch, allowing for timely replacement before more serious issues arise.

Frequently Asked Questions

What are the signs of a bad glow plug switch?
Common symptoms include difficulty starting, especially in cold weather, rough idling immediately after the engine starts, or a check engine light illuminating. The engine may crank but not fire up at all.
How do I know which glow plug switch is compatible with my vehicle?
You should always check the product's specifications against your vehicle's make, model, and year. Consulting your owner's manual or a trusted auto parts catalog is also a reliable way to find the correct part number.
Can a faulty glow plug switch cause other engine problems?
Yes, a malfunctioning switch can lead to incomplete combustion, which may result in increased fuel consumption and potential damage to other engine components over time. It also directly impacts the engine's ability to start.
How long does a glow plug switch typically last?
The lifespan of a glow plug switch can vary depending on driving conditions, climate, and the quality of the component. However, they are generally designed to last for many years and thousands of starting cycles.
Is it difficult to replace a glow plug switch myself?
Replacing a glow plug switch can range from relatively simple to moderately difficult, depending on the vehicle's design and accessibility. Basic mechanical knowledge and tools are usually required, but professional installation is an option if you're unsure.