CarSmart Auto Service
314.968.9496

The technicians at CarSmart Auto Service know your serpentine belt drives important engine accessories like your alternator, air conditioning compressor, and power steering. In some cars it may also power the power brakes or water pump. The serpentine belt is powered by the engine and winds around pulleys and the accessories. Some cars in Marlborough have two serpentine belts.


The serpentine belt, the belt tensioner (which maintains the appropriate tension on the belt) and the idler pulleys are together known as the accessory drive system.

Now your serpentine belt and the belt tensioner will just wear out over time – that’s why your vehicle manufacturer has a scheduled belt replacement interval. The team at CarSmart Auto Service in Marlborough can inspect your serpentine belt for wear and get it replaced if it’s time.

Give us a call.

CarSmart Auto Service
7921 Watson Road
Marlborough, MO 63119
314.968.9496