Sierra 18-7233 Needle and Seat Assembly - Mercury Marine 1395-7824 Equivalent

The Sierra 18-7233 Needle and Seat Assembly is a carburetor fuel-metering component for gasoline-powered 4 stroke outboard engines, built as an equivalent to Mercury Marine part number 1395-7824. The needle and seat work together inside the carburetor float bowl to regulate the flow of fuel into the bowl as the float rises and falls, shutting off fuel delivery once the correct fuel level is reached and reopening as fuel is consumed. A worn or pitted needle and seat is a common cause of flooding, hard starting, rough idle, and fuel leaking from the carburetor vents, and replacing this assembly restores accurate fuel metering.

This assembly is an engine-mount component finished in white and is rated for engines up to 220 horsepower. It is sold as a single unit and is suited to outboards used for fishing, water sports, and cruising applications. Sierra builds this part to meet or exceed the specifications of the original equipment it replaces, giving boat owners a marine-grade repair option for carburetor rebuilds and routine fuel-system maintenance.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-7233
• Product Name: Needle and Seat Assembly
• UPC: 030999558817
• OEM Equivalent Part Number: Mercury Marine 1395-7824
• Engine Type: 4 Stroke
• Fuel Type: Gasoline
• Maximum Horsepower: 220 horsepower
• Mounting Type: Engine Mount
• Color: White
• Weight: 0.02 pounds
• Unit Count: 1
• Recommended Uses: Fishing, Water Sports, Cruising

Fitment

Designed for gasoline 4 stroke outboard engines rated up to 220 horsepower, as an equivalent to Mercury Marine part 1395-7824.

Replaces (OEM)

• Mercury Marine 1395-7824

Frequently Asked Questions

What does the Sierra 18-7233 Needle and Seat Assembly do? It regulates fuel flow into the carburetor float bowl, shutting off delivery when the float reaches the correct fuel level and reopening as fuel is used, which is the core function of the 18-7233 needle and seat.

Is the Sierra 18-7233 compatible with Mercury Marine outboards? Yes, the 18-7233 is built as an equivalent to Mercury Marine part number 1395-7824.

What is the maximum horsepower rating for this needle and seat assembly? The Sierra 18-7233 is rated for gasoline engines up to 220 horsepower.

Is the 18-7233 for a 2 stroke or 4 stroke engine? This needle and seat assembly, part number 18-7233, is designed for 4 stroke gasoline engines.

How much does the Sierra 18-7233 weigh? The assembly weighs 0.02 pounds.

How many needle and seat assemblies come in one package? One Sierra 18-7233 Needle and Seat Assembly is included per unit count.

What color is the Sierra 18-7233 needle and seat? It is white in color.

Will the Sierra 18-7233 meet or exceed OEM performance? Sierra builds the 18-7233 to meet or exceed the specifications of the original Mercury Marine 1395-7824 equivalent part it replaces.

What symptoms indicate a carburetor needle and seat needs replacing? Flooding, hard starting, rough idle, and fuel leaking from carburetor vents are common signs that a needle and seat like the 18-7233 needs to be replaced.

What kind of mounting does the 18-7233 use? The Sierra 18-7233 is classified as an engine mount type component, installed within the carburetor assembly on the engine.

What applications is the Sierra 18-7233 recommended for? It is recommended for outboard engines used in fishing, water sports, and cruising.