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Average Cost. According to costhelper.com, the cost of timing belt replacement varies between $250 and $750, depending the make and model of the car as well as the price of the labor. To offset any sticker shock, it's best to discuss cost in any initial consultations with your mechanic.
1 Parts typically cost $25-$80 or more for just the timing belt, depending on vehicle make and model; or $100-$800 or more for a kit that also includes other recommended replacement parts like seals, the tensioner or a water pump.2  CostHelper readers report. For a passenger car, CostHelper readers report costs of $300-$1,570 for a timing belt package, with an average of $750. 2  For an SUV, minivan or pickup, readers report paying $610-$1,565, with an average cost of $1,048.