Quicksilver 807757T Serpentine Belt Idler Pulley for MerCruiser Engines

The Quicksilver 807757T serpentine belt idler pulley is designed for use on MerCruiser 4.3L, 5.0L, 5.7L, 6.2L, and 8.2L sterndrive or inboard engines equipped with serpentine belt systems. This genuine Mercury Marine replacement part is engineered specifically for General Motors-based marine engines, ensuring proper fit and reliable performance.

Key Features:

• Constructed from durable thermal resin for long-lasting performance in marine environments
• 3-inch diameter pulley with six grooves for optimal belt engagement
• Integrated bearing molded directly into the pulley assembly for enhanced durability
• Direct OEM replacement for worn or damaged idler pulleys
• Maintains proper serpentine belt tension for peak engine performance

Installation Recommendations:

When replacing the idler pulley, inspect the pulley support bushing and serpentine belt for signs of damage, cracking, or excessive wear. Replace any worn components to ensure proper belt alignment and prevent premature failure. Regular maintenance of the serpentine belt system helps maintain optimal engine performance and prevents unexpected breakdowns.

Quicksilver is the premier brand of Mercury Marine original equipment parts, backed by over 65 years of marine industry expertise. Each component undergoes rigorous testing to meet the demanding standards of marine applications, providing reliability and peace of mind for boat owners and marine technicians.