If you drive a diesel truck, you know that keeping an eye on exhaust gas temperatures is crucial for engine health. A pyrometer gauge helps you monitor EGTs in real time, so you can avoid overheating and protect your turbocharger. But with so many options on the market, choosing the right one can feel overwhelming.
This guide breaks down the top 10 pyrometer gauges, from budget-friendly digital models to premium multi-color kits. We’ll cover key features, installation considerations, and what each gauge is best suited for, so you can make an informed decision and keep your engine running cool.
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GlowShift Black 7 Color 1500F Pyrometer EGT Gauge Kit, 2-1/16" 52mm
Best forCustomizable dashboard aesthetics
- Multiple color modes
- Complete kit included
ConsiderLimited to 1500°F
AUTO METER 2654 Z-Series Electric Pyrometer Gauge Kit,2.3125 in.
Best forHigh-precision racing applications
- Stepper motor accuracy
- Self-calibration on startup
ConsiderIncandescent lighting only
JJCOCO 1800°F Pyrometer Exhaust Gas Temp Gauge Kit with 1/8NPT Type K EGT S…
Best forAlarm-based engine protection
- High-temp alarm with buzzer
- Rugged 90-degree sensor
ConsiderRed LED may be bright
Auto Meter 4344 Ultra-Lite Electric Pyrometer Gauge Kit,2.3125 in.
Best forClassic vehicle interiors
- Classic incandescent look
- Accurate stepper motor
ConsiderNo digital display
Hewitt Industries Combo Pyrometer & 50PSI Boost Gauge Kit
Best forTurbo boost and EGT combo
- Two gauges in one kit
- Heavy-duty construction
ConsiderNo digital display
GlowShift Tinted 7 Color 2400F Exhaust Temp EGT Gauge Kit, 2-1/16" 52mm
Best forHigh-performance engines
- 2400°F range
- Tinted lens reduces glare
ConsiderProbe wire short
Hewitt 0102131R1HI – Universal Pyrometer Gauge Kit
Best forDurable USA-made components
- Lifetime guarantee on probe
- 7-foot lead wire
ConsiderBasic design
GlowShift Black 7 Color 3-Gauge Diesel Truck Set, 2-1/16" 52mm
Best forComplete engine monitoring set
- Three gauges in one kit
- Covers boost, EGT, trans temp
ConsiderLarger installation footprint
Longacre 52-50640 AccuTech Deluxe Digital Pyrometer
Best forTire temperature measurement
- Handheld and portable
- Holds max temperature
ConsiderNot for EGT monitoring
Generic 2-1/16 Inch Red Digital Pyrometer Gauge Kit – 40-1850 Degree F with…
Best forBudget-conscious beginners
- Affordable price
- Complete kit included
ConsiderBasic features
GlowShift Black 7 Color 1500F Pyrometer – Versatile EGT Monitoring
Brand: GlowShift
A versatile and stylish pyrometer kit that's perfect for diesel trucks.
The GlowShift Black 7 Color Series pyrometer is a solid choice for diesel truck owners who want both functionality and style. It reads exhaust temps from 0 to 1500°F, which covers the typical range for most diesel engines. The 2-1/16 inch (52mm) gauge features a black dial, illuminated red needle, and a clear lens with a matte black trim ring, giving it a clean, factory-like look.
What sets this kit apart is its color customization. You get 7 solid color modes and 2 color cycle modes, allowing you to match your dashboard lights or add a personal touch. The kit includes a 1/8-27 NPT EGT probe with 3 feet of wire, a 6-foot sensor harness, and a 2-foot power harness, making installation straightforward for most DIYers.
- Multiple color modes
- Complete kit included
- Clear black dial
- Limited to 1500°F
- Probe wire short
Auto Meter 2654 Z-Series Electric Pyrometer – Race-Proven Accuracy
The Auto Meter 2654 Z-Series pyrometer is engineered for those who demand precision. It uses a race-proven digital stepper motor, which provides unmatched accuracy, and it runs a self-calibration sequence during power-up to ensure consistent readings. The included Type K thermocouple guarantees maximum accuracy and minimal response time, so you get real-time data when it matters most.
This 2.3125-inch gauge features traditional incandescent lighting around the dial perimeter, giving it a classic look that’s easy to read at night. The kit comes complete with the thermocouple, wiring harness, multiple installation methods, bulb and socket assembly, red and green bulb covers, and mounting hardware. It’s a comprehensive package for serious enthusiasts.
- Stepper motor accuracy
- Self-calibration on startup
- Complete installation kit
- Incandescent lighting only
- Larger gauge size
JJCOCO 1800°F Digital Pyrometer – Alarm-Equipped Safety
Brand: JJCOCO
A safety-focused pyrometer with excellent alarm features for peace of mind.
The JJCOCO pyrometer is designed with safety in mind. It features programmable high-temperature alarms that activate immediately with a flashing display, an audible buzzer, and a red needle warning when EGTs reach critical levels. This proactive feature helps you prevent engine damage before it happens, giving you peace of mind on long hauls.
Installation is simple thanks to the complete kit, which includes a 90-degree bend sensor, mounting hardware, and a wiring harness. The large red LED display provides real-time readings, while the sweeping analog needle shows temperature trends at a glance. Engineered for harsh environments, the rugged 90-degree sensor resists vibration failure, making it a reliable choice for off-road or heavy-duty use.
- High-temp alarm with buzzer
- Rugged 90-degree sensor
- Easy DIY installation
- Red LED may be bright
- No color options
Auto Meter 4344 Ultra-Lite Electric Pyrometer – Classic Design
Brand: AUTO METER
A dependable pyrometer with a classic aesthetic that never goes out of style.
The Auto Meter 4344 Ultra-Lite pyrometer combines classic styling with modern technology. Like its Z-Series counterpart, it uses a digital stepper motor for accuracy and self-calibrates during power-up. The included Type K thermocouple ensures fast and precise temperature readings, which is essential for monitoring exhaust gas temps.
This 2.3125-inch gauge features traditional incandescent lighting around the dial, giving it a timeless look that fits well in older vehicles. The kit includes everything you need: thermocouple, wiring harness, installation options, bulb and socket assembly, red and green bulb covers, and mounting hardware. It’s a reliable choice for those who prefer a more conventional appearance.
- Classic incandescent look
- Accurate stepper motor
- Complete kit included
- No digital display
- Limited color options
Hewitt Industries Combo Pyrometer & Boost Gauge – Dual Monitoring
Brand: TruckMeter
A practical combo kit for monitoring both boost and exhaust temps.
The Hewitt Industries combo kit gives you two essential gauges in one package: a 1600°F pyrometer and a 50 PSI boost gauge. This is perfect for diesel truck owners who want to monitor both exhaust temperature and turbo boost without buying separate gauges. The 2-1/16 inch black face heavy-duty gauges are built to withstand tough conditions.
Having both gauges together helps you diagnose engine problems and protect your turbo. By monitoring boost and EGTs simultaneously, you can spot issues early and adjust your driving or tuning accordingly. The kit comes with a 30-day satisfaction guarantee, so you can try it risk-free. It’s a practical solution for those who want comprehensive engine monitoring.
- Two gauges in one kit
- Heavy-duty construction
- 30-day guarantee
- No digital display
- Basic design
GlowShift Tinted 7 Color 2400F EGT Gauge – High-Temp Range
For those running high-performance or heavily modified engines, the GlowShift Tinted 7 Color Series EGT gauge offers a wider range of 0 to 2400°F. This makes it suitable for extreme applications where exhaust temps can soar. The 2-1/16 inch gauge features a black dial, illuminated red needle, and a tinted lens for reduced glare, along with a matte black trim ring.
Like other GlowShift gauges, it offers 7 solid color modes and 2 color cycle modes, allowing you to customize the look. The kit includes a 1/8-27 NPT EGT probe with 3 feet of wire, a 6-foot sensor harness, and a 2-foot power harness. The tinted lens adds a sleek appearance while protecting against bright sunlight.
- 2400°F range
- Tinted lens reduces glare
- Multiple color modes
- Probe wire short
- Tinted lens may dim display
Hewitt Universal Pyrometer Gauge Kit – Made in USA Quality
Brand: TruckMeter
A rugged, reliable pyrometer kit with excellent warranty coverage.
The Hewitt Universal Pyrometer Gauge Kit is a straightforward, reliable option for diesel truck owners. It features a 2-1/16 inch black face heavy-duty gauge that reads up to 1600°F. The kit includes a Type K thermocouple probe with 1/4 inch NPT fittings and a 7-foot lead wire, giving you flexibility in mounting the probe.
What makes this kit stand out is the quality of its components. The probe and lead wire are made in the USA and come with a lifetime guarantee, while the gauge itself has a 1-year limited warranty. The power wire is also included, so you have everything you need for installation. This is a no-frills, dependable choice for those who value durability.
- Lifetime guarantee on probe
- 7-foot lead wire
- Heavy-duty gauge
- Basic design
- No color options
GlowShift Black 7 Color 3-Gauge Diesel Set – Complete Monitoring
Brand: GlowShift
An all-in-one gauge set for comprehensive diesel engine monitoring.
The GlowShift Black 7 Color 3-Gauge Set is the ultimate solution for diesel truck owners who want to monitor multiple vital statistics. This set includes a boost gauge (0-60 PSI), a pyrometer EGT gauge (0-1500°F), and a transmission temperature gauge (80-260°F). Each gauge is 2-1/16 inches with a black dial, illuminated red needle, and matte black trim ring.
With 7 solid color modes and 2 color cycle modes, you can customize all three gauges to match your dashboard or create a unique look. The kit includes all necessary parts: boost gauge with compression fittings and nylon hose, EGT gauge with probe and harness, and transmission gauge with sender. It’s a comprehensive package that covers all your engine monitoring needs.
- Three gauges in one kit
- Covers boost, EGT, trans temp
- Customizable colors
- Larger installation footprint
- May require more wiring
Longacre AccuTech Deluxe Digital Pyrometer – Portable Tire Temp
Brand: Longacre
A specialized digital pyrometer for tire temp analysis in racing.
The Longacre AccuTech Deluxe Digital Pyrometer is a different kind of tool, designed for measuring tire temperatures rather than exhaust gas. This handheld device is fast, accurate, and fits in the palm of your hand, making it perfect for racing enthusiasts who need to check tire temps quickly. It can hold the highest temperature reached and compare one temperature to another with the press of a button.
The pyrometer can be switched between Fahrenheit and Celsius, and it features a low battery indicator and auto shut-off to conserve battery life. It comes with a coil cord tire probe and a hard carrying case for protection. This is an essential tool for optimizing tire performance on the track.
- Handheld and portable
- Holds max temperature
- Includes carrying case
- Not for EGT monitoring
- Requires batteries
Generic Red Digital Pyrometer Gauge – Budget-Friendly Option
Brand: Generic
A cost-effective pyrometer kit that gets the job done without breaking the bank.
If you’re on a budget, the Generic 2-1/16 inch Red Digital Pyrometer Gauge Kit offers a simple and affordable way to monitor exhaust gas temperatures. It has a range of 40°F to 1850°F, which covers most stock and mildly modified engines. The red digital display is easy to read, even in bright sunlight, and the chrome bezel adds a touch of style.
This complete kit includes the gauge, thermocouple, and lead wire, so you have everything you need for installation. While it lacks the advanced features of pricier models, it provides reliable EGT readings at a fraction of the cost. It’s a great entry-level option for those new to pyrometers.
- Affordable price
- Complete kit included
- Easy-to-read red display
- Basic features
- Chrome bezel may show fingerprints
Buyer’s Guide: What to Consider
Choosing the right pyrometer involves more than just picking the first one you see. You need to consider your vehicle’s specific needs, your budget, and how you plan to use the gauge. Here are five key factors to keep in mind when making your decision.
- Temperature Range: Consider the maximum EGT your engine can reach. Stock diesel engines typically stay below 1200°F, but modified engines can exceed 1500°F. Choose a gauge with a range that covers your expected temps to avoid pegging the needle.
- Display Type: Analog gauges offer a classic look and quick trend reading, while digital displays provide precise numbers. Some gauges combine both, like the JJCOCO model. Think about what's easier for you to read at a glance while driving.
- Sensor Quality: The thermocouple is the heart of the pyrometer. Type K thermocouples are standard and offer good accuracy. Look for probes with proper NPT fittings and durable construction, especially if you drive in harsh conditions.
- Installation Kit: Check what's included in the box. Some kits come with wiring harnesses, mounting hardware, and even installation instructions. A complete kit saves you time and money, especially if you plan to install it yourself.
- Additional Features: Features like color customization, alarms, and multiple gauge sets can enhance your monitoring experience. If you want to match your dashboard or need alerts for high temps, look for these extras. But remember, more features often mean a higher price.
Conclusion
Monitoring exhaust gas temperatures is essential for protecting your diesel engine and turbocharger. Whether you prefer the customizable GlowShift kits, the precision of Auto Meter, or the budget-friendly Generic option, there’s a pyrometer out there for you. Consider your engine’s requirements, installation preferences, and desired features to narrow down your choice.
For most diesel truck owners, the GlowShift Black 7 Color 1500F Pyrometer offers a great balance of style and functionality. If you need a wider range or additional gauges, the GlowShift 3-Gauge Set is an excellent investment. For those on a tight budget, the Generic digital pyrometer provides reliable readings without the extra cost. Choose wisely and keep your engine running cool.
Erica Steven is the founder and lead writer of WorstBrands, a site dedicated to providing honest and trustworthy reviews about outdoor gear and fashion products.
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