Quality Verified Glow Plug Timer

In diesel-powered heavy and off-road equipment, the glow plug timer ensures your glow plug system heats properly before ignition. When the timer fails, you may notice hard starts, long cranking times, or excessive smoke—these are common signs of bad glow plugs or timer issues. A malfunctioning timer can cause the glow plugs to heat for too long or too short, leading to poor combustion and reduced engine efficiency.

As a trusted aftermarket parts supplier, we provide durable and precision-tested glow plug timers designed to meet OEM specifications. Whether you operate an Isuzu-powered excavator or a Kubota tractor, our timers help maintain reliable cold starts and consistent performance in all conditions.

Identifying a Faulty Glow Plug Timer

Before replacing the timer unit, check for these typical signs of bad glow plugs or timer failure:

• Glow plug warning light flickers or doesn’t illuminate.
• Engine cranks longer or misfires in cold weather.
• Glow plug elements overheat or burn out prematurely.
• You hear no “click” from the timer relay during preheating.
• Vehicle emits excessive white smoke on initial start.

These symptoms often indicate timing irregularities in the preheat circuit. Replacing your glow plug timer restores proper voltage control and extends your glow plug lifespan.

Broad Compatibility for Your Entire Fleet

We know that a fleet can consist of many different makes and models. That's why we've built an extensive catalog of glow plug timers to cover the most popular brands in the off-road and heavy equipment industries.

Supported Equipment and Engine Brands： Isuzu, Hitachi, John Deere, Komatsu, Caterpillar, CASE, New Holland, Kobelco, and more.

Don't let a faulty timer disrupt your work schedule. Explore our selection of reliable glow plug timers to ensure your engine starts strong every time.