Four Seasons 45915 Drive Belt Idler Pulley Eccentric Cam Arm

The Four Seasons 45915 is a direct-fit accessory drive belt idler pulley eccentric cam arm engineered to restore proper tension and alignment to your vehicle's serpentine belt system. As a key component of the accessory drive system, the eccentric arm allows precise positional adjustment of the idler pulley, ensuring consistent belt tension to prevent slipping, squealing, and premature belt wear.

Key Features:

• Direct-fit OEM replacement — designed to match original equipment specifications for a straightforward, no-modification installation
• Steel construction — durable satin-finish steel provides long-lasting resistance to heat, vibration, and engine bay conditions
• Eccentric cam design — allows precise belt tension adjustment by rotating the arm to shift idler pulley position
• Maintains accessory drive performance — helps keep the alternator, water pump, power steering pump, and A/C compressor operating correctly
• Eliminates belt noise — proper tension prevents the belt slip and chirping associated with worn or misaligned eccentric arms
• Engineered and tested for reliability — backed by Four Seasons' decades of thermal and drive system component expertise

The Four Seasons 45915 eccentric arm is sold individually and is the correct solution when the original cam arm is worn, bent, or corroded, causing improper belt routing or tension loss. Restoring this component to factory spec helps protect the entire accessory drive belt system from premature failure.