SIERRA Mercury/Force 0.078 in Needle & Seat Assembly – 18-7057

Description

SIERRA Mercury/Force 0.078 in Needle & Seat Assembly – 18-7057 is a replacement fuel-inlet metering assembly used in compatible Mercury/Mariner and Force carburetors. Its published 0.078-inch seat bore is an important fitment characteristic because different carburetor families use different inlet sizes and calibrations.

Use the OEM part number and carburetor model to confirm the correct needle and seat. Matching only the general engine family is not sufficient, particularly on older Mercury and Force carburetors where several needle-and-seat sizes were used.

Key Features

• 0.078-inch seat bore
• For select Mercury/Mariner and Force carburetors
• Replaces multiple Mercury 1395/1399-series references
• Cross-references GLM 40920
• Fuel-inlet metering component for carburetor float-bowl control

Specifications

• Sierra part number: 18-7057
• Product type: Needle and seat assembly
• Seat bore: 0.078 in
• Application: Mercury / Mariner / Force outboards
• System: Carburetor fuel inlet

Interchange

• Chrysler/Force/US Marine: 1399-1473, F010790
• GLM: 40920
• Mercury Marine: 1395-9258, 1395-92581, 1399-103A1, 1399-1138, 1399-1473, 1399-934