Quicksilver 805987 Bypass Hose - Water Pump to Intake Manifold

The Quicksilver 805987 is a genuine OEM bypass hose designed to connect the water pump to the intake manifold on GM Big Block V8 marine engines. This critical cooling system component ensures proper coolant circulation between the top of the water pump and the intake manifold, maintaining optimal engine operating temperatures.

Key Features:

• Genuine Mercury/Quicksilver OEM replacement part
• Pre-formed molded rubber construction for precise fit
• Designed specifically for Big Block 454 (7.4L) and 502 (8.2L) V8 engines
• Compatible with MerCruiser stern drive applications
• Direct replacement for worn or deteriorated original hose

Applications:

• MerCruiser Race Model 420 GM 454 V-8 (1987-1989, serial numbers 0A398941 through 0B622418)
• All GM 454 (7.4L) and 502 (8.2L) marine engines using this bypass hose configuration

Cross-Reference Part Numbers:

• Mercury/MerCruiser: 32-805987, 32-66206
• Crusader: 7140240, 30178
• Marine Power: 0053-450
• OMC/Volvo: 0914875

This bypass hose is essential for maintaining proper cooling system function in your marine engine. Replace worn or cracked hoses to prevent coolant leaks and ensure reliable engine performance on the water.