Quicksilver 865615Q07 Serpentine Belt for MerCruiser 454/502 Mag MPI Bravo Engines

The Quicksilver 865615Q07 is a genuine OEM serpentine belt designed specifically for MerCruiser big block marine engines. This 119.4 cm (47-inch) belt is engineered to deliver reliable performance and proper tension for the alternator, power steering pump, and water pump systems on 454 and 502 cubic inch displacement engines.

Key Features:

• Genuine Mercury Marine/Quicksilver OEM part - not aftermarket
• Precision-engineered for MerCruiser 7.4L (454 CID) and 8.2L (502 CID) Mag MPI engines
• Length: 119.4 cm (47 inches)
• Compatible with metal 5-3/4 inch diameter power steering pump pulley
• Designed for Bravo sterndrive applications
• Backed by Mercury Marine 1-year factory warranty

Engine Compatibility:

• 454 Mag MPI (1998-2001, Serial Numbers OL010029-OM024999)
• 454 Mag MPI Horizon MIE (1998-2001, Serial Numbers OL002200-OL674000)
• 502 Mag MPI (1998-2001, Serial Numbers OL017000-OM024999)
• 7.4L MPI (1998-2001, Serial Numbers OL010003-OM024330)
• 7.4L MPI MIE (1998-2001, Serial Numbers OL002006-OM025999)
• 8.2L MPI MIE (1998-2001, Serial Numbers OL002450-OL674200)
• 350 Mag Alpha (2000-2004, Serial Numbers OL619000 and up)

Cross-Reference Part Numbers:

• OEM: 57-865615Q07, 57-865615007, 57-8638767, 57-861050, 865615007
• Sierra: 18-15103

This serpentine belt is a critical component for maintaining proper engine accessory operation. Regular inspection and replacement of worn belts prevents damage to alternators, pumps, and other driven components. When installing, ensure the belt is routed correctly according to your engine's belt routing diagram, and that proper tension is achieved for optimal performance and longevity.