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3. Loss of Accessory Function If the power steering, alternator, or air conditioning system experiences intermittent failures, the problem could lie with the 4PK belt.

3. Alignment Misalignment can lead to uneven wear and premature failure. Periodic checks to ensure the pulleys are aligned can help maintain the system's efficiency.

Another key difference lies in maintenance and replacement intervals. Fan belts usually require monitoring for wear and may need to be replaced every 50,000 to 100,000 miles, depending on the vehicle. Timing belts, on the other hand, have a stricter replacement schedule, often suggested by manufacturers to be replaced every 60,000 to 100,000 miles to avoid catastrophic failure.

Types of Drive Belts

The Importance of Timing Belts in Automotive Industry