CATERPILLAR-BELT-TENSIONER

190-0642 is a direct-fit Caterpillar belt tensioner, replacing the original spring-loaded arm without any modification to mounting points or belt routing. Over time the internal spring in these units loses its set tension, which lets the belt run loose enough to slip under sudden load — exactly the moment you don't want reduced charging or pump output. Swapping this part restores the system to factory tension. Orange.net.za ships fast across South Africa.