Parts:
- Timing belt: $20 to $50
- Timing belt tensioner: $15 to $40
- Timing belt idler pulley: $10 to $30
- Water pump (recommended to be replaced along with the timing belt): $50 to $120
Labor:
Labor costs for replacing the timing belt can vary widely, but on average, it can take around 4 to 6 hours for a professional mechanic. Labor rates can range from $50 to $100 per hour, so the total labor cost can be anywhere from $200 to $600.
Additional Costs:
Some shops may charge additional fees for shop supplies, hazardous waste disposal, or diagnostic time. These fees can add another $50 to $100 to the total cost.
Total Estimated Cost:
Adding up the cost of parts and labor, the total estimated cost for replacing the timing belt on a 1994 Nissan Altima can range from approximately $300 to $850. It's always best to get quotes from multiple reputable repair shops in your area to compare prices and services.