Best Glow Plug Switches of 2026
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Are you looking for the glow plug switches from different brands on the market, such as Laser, BGS, Blue Print, but don't know where to start? Luckily, we've researched for you and also put together a list of our top 3 Best Glow Plug Switches for you to consider.
To compile our list of the best glow plug switches, we've researched and evaluated a range of the best-selling glow plug switches on the market, costing between $19.00 and $59.00. Our top pick is Laser Glow Plug Switch. Check out our best 3 for all of our favorites, and be sure to read our buying guide to get all the information you need to make the best choice!
At a Glance: Our Top Picks
#TOP 1
9.8
#TOP 2
9.7
#TOP 3
9.5
Top 3 Glow Plug Switches
Laser - 5154 Glow Plug Reamer Set 3pack qty
BGS 2981 | Glow Plug Joint Socket, Hexagon | 10 mm (3/8") Drive | 9 mm
Blue Print ADG05513 Glow Plug Socket, Pack of one
Frequently Asked Questions (FAQs)
1. What does glow plug switch do?
The glow plug control unit uses a glow plug relay to switch the current for the glow plugs on and off. The more glow plugs monitored by a control unit, the higher the current the circuit will need. To reduce the current needed, glow plugs are often distributed across two circuits, with two glow plug relays.
2. How long do glow plug relays last?
Glow plugs should last for as long as 100,000 miles; they will gradually deteriorate due to wear and tear over this period.
3. What controls how long the glow plugs stay on?
The glow plugs remain switched on during the post-heating time even if the engine is running. The length of the post-heating time is determined by the type of engine and the engine temperature. Only special "post-heating" glow plugs are used for this function.
During our glow plug switch research, we found 3 glow plug switch products and shortlisted 3 quality products. We collected and analyzed 2,346 customer reviews through our big data system to write the glow plug switches list. We found that most customers choose glow plug switches with an average price of $21.94.
The glow plug switches are available for purchase. We have researched hundreds of brands and picked the top brands of glow plug switches, including Laser, BGS, Blue Print.
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.