Best Glow Plug Switches of 2026

Robert Reyes Avatar
Robert Reyes
Last Updated: Apr 26, 2023

* We independently evaluate all recommended products and services. If you click on links we provide, we may receive compensation.

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

Laser - 5154 Glow Plug Reamer Set 3pack qty Cover #TOP 1
Laser - 5154 Glow Plug Reamer Set 3pack qty
ftb score rating icon 9.8
BGS 2981 | Glow Plug Joint Socket, Hexagon | 10 mm (3/8") Drive | 9 mm Cover #TOP 2
BGS 2981 | Glow Plug Joint Socket, Hexagon | 10 mm (3/8") Drive | 9 mm
ftb score rating icon 9.7
Blue Print ADG05513 Glow Plug Socket, Pack of one Cover #TOP 3
Blue Print ADG05513 Glow Plug Socket, Pack of one
ftb score rating icon 9.5

Top 3 Glow Plug Switches

#TOP 1

Laser - 5154 Glow Plug Reamer Set 3pack qty

Laser
5154
3.27 x 4.72 x 1.38 inches
0.42 pounds
Laser - 5154 Glow Plug Reamer Set 3pack qty Cover
Laser - 5154 Glow Plug Reamer Set 3pack qty

Features
For Removing Engine Carbon Deposits
Sizes: M10 X 10, M12 X 125 (short), M12 X 125 (long)
Manufactured From Chrome Molybdenum With Titanium Coating
#TOP 2

BGS 2981 | Glow Plug Joint Socket, Hexagon | 10 mm (3/8") Drive | 9 mm

BGS
2981
3.94 x 1.18 x 1.18 inches
0.17 pounds
BGS 2981 | Glow Plug Joint Socket, Hexagon | 10 mm (3/8") Drive | 9 mm Cover
BGS 2981 | Glow Plug Joint Socket, Hexagon | 10 mm (3/8") Drive | 9 mm

Features
Max. Glow Plug Head Length: 45 Mm (incl. 6-Pt.)
Made Of Chrome Vanadium Steel
Wrench Size: 9 Mm
Surface Finish: Satin Chrome Plated
Profile: Chrome Plated
#TOP 3

Blue Print ADG05513 Glow Plug Socket, Pack of one

Blue Print
ADG05513
5.91 x 3.94 x 3.94 inches
0.40 pounds
Blue Print ADG05513 Glow Plug Socket, Pack of one Cover
Blue Print ADG05513 Glow Plug Socket, Pack of one

Features
Original Blue Print Spare Part - Right First Time
Buying Guide Image

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.

Editor's Notes

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.

Written by
Robert Reyes Avatar

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.