Quicksilver 804689 Mercarb 2-Barrel Carburetor Needle and Seat Assembly

The Quicksilver 804689 is a genuine OEM needle valve and seat assembly designed for Mercarb 2-barrel carburetors found in MerCruiser stern drive engines. This precision-engineered component controls fuel flow into the carburetor float bowl, maintaining proper fuel level for optimal engine performance.

Key Features:

• Genuine Quicksilver OEM replacement part for reliable fit and function
• Includes needle valve, seat, and spring for complete assembly
• Precision-machined brass construction for durability and corrosion resistance
• Maintains proper fuel metering to prevent flooding or fuel starvation
• Direct replacement for worn or leaking needle and seat assemblies

Regular replacement of the needle and seat assembly helps prevent fuel leaks, hard starting, rough idle, and poor fuel economy. This is a common maintenance item for Mercarb-equipped engines and should be replaced whenever rebuilding or servicing the carburetor.