Mercruiser Serpentine Belt Idler Pulley

This idler pulley is designed for Mercruiser 4.3L, 5.0L, and 5.7L engines, ensuring proper serpentine belt operation.

• Mercruiser - Fits 4.3L, 5.0L, 5.7L, and 350 Mag engines
• High-quality construction for reliable performance
• Essential for maintaining belt tension and engine function