Best Ignition Glow Plugs of 2025

Robert Reyes Avatar
Robert Reyes
Last Updated: Jan 5, 2025

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Ignition glow plugs are a crucial component of diesel engines. They are responsible for heating the air inside the engine cylinder, which in turn helps ignite the fuel. This process ensures that the engine starts up smoothly and efficiently, even in cold weather conditions. Ignition glow plugs are designed to withstand high temperatures and pressures, making them durable and reliable. They come in a variety of sizes and shapes to fit different types of engines. Overall, ignition glow plugs are an essential part of maintaining the performance and longevity of diesel engines.

At a Glance: Our Top Picks

NQEUEPN 12V Glow Plug Repair Kit Cover #TOP 1
NQEUEPN 12V Glow Plug Repair Kit
ftb score rating icon 9.8
GM Genuine Parts 9G Glow Plug Cover #TOP 2
GM Genuine Parts 9G Glow Plug
ftb score rating icon 9.7
Glow Plug Repair Kit by NQEUEPN Cover #TOP 3
Glow Plug Repair Kit by NQEUEPN
ftb score rating icon 9.5

Top 10 Ignition Glow Plugs

#TOP 1

NQEUEPN 12V Glow Plug Repair Kit

NQEUEPN
1000611
silver, green
NQEUEPN 12V Glow Plug Repair Kit Cover
7pcs 12V 2KW 5KW 8KW Glow Plug Repair Kit, Chinese Diesel Parking Heater Gaskets Ceramic Glow Plug Heater Repair Parts Glow Ignition Plug Service Kit Heater Accessories for Vevor Car Truck Boat

The NQEUEPN Glow Plug Kit is an essential tool for maintaining your diesel parking heater. It includes everything you need: a glow plug, a cover, four gaskets, and a screw. This complete kit is designed for easy installation and helps ensure that your heater operates efficiently. With a quick heating capability, the glow plug promotes better fuel combustion, reducing harmful carbon deposits. Made from durable materials, this kit is built to last, providing you with reliable performance even in cold weather conditions.

What We Like
Complete installation kit
Efficient fuel combustion
Durable materials
Easy to install
Reliable in cold weather
#TOP 2

GM Genuine Parts 9G Glow Plug

GM
12639701
GM Genuine Parts 9G Glow Plug Cover
GM Parts GM Genuine Parts 9G Glow Plug (Pack of 1)

The GM Genuine Parts 9G Glow Plug is designed to provide the heat needed for cold starts in diesel engines. Its GN-type regulating coil is self-regulating, which prevents the plug from overheating by controlling electrical flow from the battery as temperatures rise. The glow plug comes in a range of reaches from 21 mm to 40 mm to meet chamber requirements in various applications.

What We Like
Provides heat for cold starts in diesel engines
Self-regulating GN-type regulating coil prevents overheating
Comes in a range of reaches to meet various chamber requirements
#TOP 3

Glow Plug Repair Kit by NQEUEPN

NQEUEPN
1015914
silver, green,black
Glow Plug Repair Kit by NQEUEPN Cover
Glow Plug Repair Kit, 8pcs Diesel Parking Heaters 12V 2KW 5KW 8KW Glow Plug Ceramic Glow Plug Heater Repair Parts Glow Ignition Plug Kit Heater Accessories for Car Truck Boat

The NQEUEPN Glow Plug Kit is an essential tool for maintaining your diesel parking heaters. It includes everything you need, such as a glow plug, cover, gaskets, and screws, making installation straightforward and hassle-free. The glow plug heats up quickly, improving fuel combustion and minimizing carbon deposits, which enhances efficiency and longevity. Crafted from high-quality materials, the components are designed to withstand high temperatures, ensuring reliability. This kit is compatible with various diesel heaters, providing stable performance even in cold conditions, so you can rely on it without worry.

What We Like
Complete installation kit
Efficient fuel combustion
High-temperature resistance
Easy to replace
Stable in cold weather
#TOP 4

Autolite 1116 Glow Plug for VW Diesel

1116
Autolite 1116 Glow Plug for VW Diesel Cover
Autolite 1116 Automotive Replacement Glow Plug for 1996-2008 Volkswagen 1.9L Super Duty Diesel Engines (1 Pack)

The Autolite Glow Plug is engineered for maximum performance in your Volkswagen diesel engine. It provides concentrated heat for reliable starts in any weather, ensuring you can count on your vehicle year-round. With improved durability, these glow plugs are designed to match original equipment specifications, offering a perfect fit and function. Made from a high-heat nickel-chrome alloy, they excel at igniting diesel engines even from a cold start. This makes them a versatile choice for various diesel applications in passenger cars and light trucks.

What We Like
Reliable cold starts
Durable construction
High-performance heating
OE fit and function
#TOP 5

Bosch Duraterm Glow Plug

80028
Bosch Duraterm Glow Plug Cover
BOSCH 80028 / 0250202022 Duraterm Glow Plug - Single

The Bosch Duraterm Glow Plug is a high-performance ignition glow plug designed to provide fast and efficient engine start-up. With Bosch's patented Duraterm technology, this glow plug reaches higher temperatures quickly, allowing for a fast start-up of your engine. The nickel-plated, rolled threads of the glow plug not only offer increased strength but also prevent seizure, ensuring long-lasting performance. Twin Viton seals protect the coils against exhaust gas damage, promoting a longer life for the glow plug. Additionally, Bosch Glow Plugs are easy to install, thanks to their OE or OE spec connectors that provide a precise fit. As an actual OE part, the Bosch Duraterm Glow Plug is the same component that was installed when your vehicle was manufactured. Compatible with select Volkswagen vehicles with diesel engines, this glow plug is a reliable choice for your vehicle's ignition system.

What We Like
Fast start-up
Anti-seize design
Longer life
#TOP 6

JUWEVAZU Glow Plug Repair Kit

JUWEVAZU
Diesel heater glow plug
JUWEVAZU Glow Plug Repair Kit Cover
JUWEVAZU 7Pcs 12V 24V Glow Plug Repair Kit, Fit for 3kw 4kw 5kw 6kw 7kw 8kw Diesel Heater with Parking Diesel Heater Glow Ignition Plug Kit

The JUWEVAZU Glow Plug Kit is designed for various diesel heaters, including popular models like Webasto and Eberspacher. Its high-quality ceramic construction ensures excellent heat and thermal shock resistance, making it a reliable choice for efficient heating. This kit accelerates the heating process, providing you with warmth quickly when you need it most. Additionally, the materials used are lightweight and rust-resistant, ensuring that the components last longer and perform optimally. The compact size of the kit also makes it easy to handle and store, enhancing your overall experience.

What We Like
High heat resistance
Fast heating capability
Durable materials
Compact and easy to store
#TOP 7

Autolite 1110 Glow Plug (4 Pack)

1110-4PK
Multicoloured
Autolite 1110 Glow Plug (4 Pack) Cover
Autolite 1110 Replacement Glow Plug for 1982-1993 GM 6.2L & 1992-2004 GM 6.5L Super Duty Diesel Engines (4 Pack)

The Autolite Glow Plug Set is designed to provide reliable starts for your diesel engine, no matter the season. Each glow plug generates concentrated heat, ensuring your engine fires up easily, even in cold conditions. Built for improved durability, these plugs are matched to original equipment specifications for a perfect fit. Made with high-quality nickel-chrome metal alloy, they enhance the longevity of your engine's performance. Whether you drive a passenger car or a light truck, these glow plugs cater to various diesel applications, making them a dependable choice for your vehicle.

What We Like
Reliable cold starts
Durable construction
High-performance heating
OE fit and function
#TOP 8

Hvxrjkn Glow Plug Repair Kit

Hvxrjkn
Hvxrjkn Glow Plug Repair Kit Cover
Glow Plug Repair Kit 12V 2KW 5KW 8KW Parking Diesel Heater Glow Ignition Plug Kit with Filter and Removal Fitting Tool Ceramic Air Heater Glow Plug Repair Kit for Parking Heaters

The Hvxrjkn Glow Plug Kit is designed to enhance the performance of your diesel heater. Made from durable materials like ceramic and metal, it ensures longevity while being lightweight for easy handling. With excellent low-temperature starting capabilities, you'll never have to worry about your heater failing to start in cold conditions. This kit is compatible with a variety of diesel heaters, making it a versatile choice for users. Additionally, the included installation tools make setup straightforward, allowing you to quickly get your heater back up and running.

What We Like
Durable materials
Excellent cold-start performance
Compatible with multiple models
Easy installation
#TOP 9

YIUIY 8PCS Glow Plugs 9G

replaces 12639701 97364968
Pack of 8
YIUIY 8PCS Glow Plugs 9G Cover
YIUIY 8PCS Glow Plugs 9G Replace 12639701 97364968 Compatible with Chevy GMC Duramax 6.6 Diesel for Silverado Sierra Savana Express 06-16 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016

The YIUIY Glow Plugs are designed to provide essential heat for your engine, ensuring smooth operation even in cold weather. With their compatibility across various Chevy and GMC models, these plugs help maintain ignition in all cylinders, enhancing throttle response for a better driving experience. Their durable construction guarantees a long service life, so you can rely on them for consistent performance. Plus, installation is straightforward, allowing you to replace them without hassle, while their self-regulating feature helps prevent overheating by controlling electrical flow as temperatures rise.

What We Like
Durable construction
Improves engine performance
Easy installation
Self-regulating function
#TOP 10

OEM Ford/Motorcraft Idi 7.3l DIESEL Glow Plug Set

F2TZ-12A342-A
OEM Ford/Motorcraft Idi 7.3l DIESEL Glow Plug Set Cover
OEM Ford / Motorcraft Idi 7.3l DIESEL Glow Plug Zd-9- Zf2tz-12a342-a (Set of 8 Pcs)

This set of 8 pcs of OEM Ford/Motorcraft Idi 7.3l DIESEL Glow Plug (Part Number: ZD-9 / F2TZ-12A342-A) is made in the USA and comes with a 1-year manufacturer warranty. It is designed for ignition purposes and can be a reliable replacement for your vehicle. With fast shipping, you can have it delivered to your doorstep in no time.

What We Like
Fast shipping
Made in the USA
1-year manufacturer warranty
Buying Guide Image

The Right Ignition Glow Plugs for Your Car

Introduction

Ignition glow plugs are an essential component of diesel engines, providing the initial heat necessary for combustion. Choosing the right glow plugs for your engine can be a daunting task, but with a little knowledge and understanding of the available options, you can make an informed decision that will keep your engine running smoothly.

Factors to Consider

When choosing ignition glow plugs, there are several factors to consider. The first and most important is the type of engine you have. Different engine designs and configurations require different types of glow plugs, so it's important to make sure you get the right ones for your vehicle.

Another important factor is the operating temperature of your engine. Different engines have different temperature ranges, and choosing glow plugs that are designed for your engine's operating temperature will ensure that they provide the right amount of heat for efficient combustion.

The size of the glow plugs is also a critical factor. If the plugs are too small, they may not provide enough heat for efficient combustion, while if they are too large, they may cause damage to the engine. It's important to choose the right size of glow plugs for your engine to ensure optimal performance.

Types of Ignition Glow Plugs

There are several different types of ignition glow plugs available, each with its own unique characteristics and advantages. Some of the most common types include:

  • Pencil-style glow plugs: These are the most common type of glow plug, and are named for their thin, pencil-like shape. They are typically made of a ceramic material and are designed to provide a quick and efficient heat source for combustion.

  • Flat-style glow plugs: These glow plugs are similar to pencil-style plugs, but are wider and flatter in shape. They are often used in engines with limited space, as they can be mounted in a variety of positions without interfering with other engine components.

  • Coiled-style glow plugs: These glow plugs are named for their coiled shape, which allows them to heat up quickly and provide a consistent heat source for combustion. They are often used in engines with high compression ratios, as they can withstand the increased pressure and temperature.

Choosing the Right Ignition Glow Plugs

When choosing ignition glow plugs, it's important to consider the type of engine you have, the operating temperature of your engine, and the size of the glow plugs. Once you have a good understanding of these factors, you can start looking at the different types of glow plugs available and compare their features and benefits to find the ones that are right for your engine.

It's also a good idea to consult with a professional mechanic or a knowledgeable salesperson at a auto parts store. They can provide expert advice and guidance on which glow plugs are best suited for your specific engine and operating conditions.

Conclusion

Ignition glow plugs are an essential component of diesel engines, providing the initial heat necessary for combustion. Choosing the right glow plugs for your engine can be a daunting task, but with a little knowledge and understanding of the available options, you can make an informed decision that will keep your engine running smoothly.

Frequently Asked Questions (FAQs)

1. What happens when glow plugs go bad?

When glow plugs go bad, the engine will become progressively harder to start as temperatures drop. It may also idle roughly and produce white smoke from the exhaust for several minutes once it finally starts.

2. Can a diesel run without glow plugs?

Yes, diesel engines can start without glow plugs. Glow plugs are not responsible for triggering the combustion process in a diesel engine. Their purpose is to warm up the fuel/air mixture to allow it to combust by itself.

3. Is it bad to run a diesel with a bad glow plug?

It is not safe to drive with a faulty glow plug in a diesel engine. A bad glow plug can result in inadequate fuel ignition, leading to misfiring or rough running of the engine. This can be dangerous, especially at high speeds or in hazardous conditions.

4. Can I drive with a bad glow plug?

Driving with a bad glow plug can cause carbon buildup in the affected cylinder and potential damage to emissions control equipment. This can lead to expensive repairs. It is recommended to get the glow plug fixed as soon as possible.

5. Can you drive with a broken glow plug?

While you may be able to drive with one broken glow plug, it will be extremely difficult to start your car if two or more glow plugs malfunction, even in warm weather. It's important to note that difficulty starting your car can also indicate problems with the fuel system or battery.

Editor's Notes

During our ignition glow plug research, we found 24 ignition glow plug products and shortlisted 10 quality products. We collected and analyzed 10,329 customer reviews through our big data system to write the ignition glow plugs list. We found that most customers choose ignition glow plugs with an average price of $14.23.

The ignition glow plugs are available for purchase. We have researched hundreds of brands and picked the top brands of ignition glow plugs, including NQEUEPN, GM, Autolite, Bosch, JUWEVAZU. The seller of top 1 product has received honest feedback from 3,272 consumers with an average rating of 4.9.

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.