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Serpentine Belt Wear Gauge


New and Improved Belt Wear Gauge - Easier to Use!

Belt Wear Gauge

The Gates Belt Wear Gauge was designed with input from automotive technicians. It is easy to use and gives instant pass / fail results. You can use it on or off the vehicle, one-handed, and even in places where you can't see.

To request a free gauge, click here.





How To Inspect Today's Serpentine Belts for Wear

1. With the engine off, press the gauge into the belt grooves using gentle pressure to hold the gauge against the belt. 
2. Attempt to rock the gauge in a lateral motion. 
3. When the gauge remains tightly seated and resists movement, the belt has sufficient service life left. 
4. When the gauge allows lateral rocking movement, the belt ribs have enough wear to allow the belt to slip and should be replaced. 

View the video for a full demonstration of how to inspect a serpentine belt.

Belts manufactured before the year 2000 show obvious failure signs such as cracks. Today's serpentine belts wear out gradually, much like a tire, and don't always show signs of visual wear. A serpentine belt can appear to be in good condition when it's actually near failure. The New Gates Belt Wear Gauge provides a simple and reliable way to determine if a serpentine belt has lost enough material to negatively affect performance and warrant replacement.

What does a worn belt affect? 

1. Power steering
2. Engine cooling
3. Charging systems

A slipping belt can mean the loss of these critical functions. 

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