Sierra 18-3202 Impeller Repair Kit, Replaces 277181, 434424, for Johnson/Evinrude 5.5-7.5 HP Outboards

The Sierra 18-3202 Impeller Repair Kit is a complete water pump rebuild kit for select vintage Johnson/Evinrude outboard motors. Replacing a worn impeller restores proper cooling water flow to the engine, which is essential for preventing overheating damage. This kit takes the guesswork out of the job by bundling the two components needed for a full impeller service in one package: a Sierra 18-3001 impeller and a Sierra 18-3102 impeller plate.

The impeller is made of a rubber or plastic material designed to hold up to continuous water pump operation, and the kit is finished in white. It is built to fit Johnson/Evinrude 5.5 HP (1954-1964), 6 HP (1952-1978), and 7.5 HP (1954-1958) outboard engines, and is designed to meet or exceed the specifications of the original equipment part it replaces. Because outboard water pump components are fit specific, confirm the part numbers on your existing impeller and plate against this kit before ordering to ensure proper fit.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-3202
• Kit Contents: Sierra 18-3001 Impeller, Sierra 18-3102 Impeller Plate
• Weight: 0.2 pounds
• Color: White
• Material: Rubber or Plastic
• Maximum Horsepower: 7.5 Horsepower
• Fuel Type: Gasoline
• Mounting Type: Transom Mount
• OEM Cross-Reference: 277181, 434424
• UPC: 030999315649
• GTIN: 030999315649
• Unit Count: 1

Fitment

• Johnson/Evinrude 5.5 HP outboard engines (1954-1964)
• Johnson/Evinrude 6 HP outboard engines (1952-1978)
• Johnson/Evinrude 7.5 HP outboard engines (1954-1958)

Replaces (OEM)

• 277181
• 434424

Frequently Asked Questions

What engines does the Sierra 18-3202 impeller kit fit? The 18-3202 kit is designed for Johnson/Evinrude 5.5 HP (1954-1964), 6 HP (1952-1978), and 7.5 HP (1954-1958) outboard engines. Since water pump components are fit specific, verify your existing impeller and plate part numbers before ordering.

What is included in the 18-3202 kit? This kit contains one Sierra 18-3001 impeller and one Sierra 18-3102 impeller plate, giving you both parts needed for a complete water pump impeller service in a single package.

What OEM part numbers does the 18-3202 kit replace? The impeller included in the Sierra 18-3202 kit replaces OEM numbers 277181 and 434424.

How much does the impeller kit weigh? The Sierra 18-3202 Impeller Repair Kit weighs 0.2 pounds.

What material is the impeller made from? The impeller in kit 18-3202 is made of a rubber or plastic material engineered for continuous water pump duty in the outboard's cooling system.

Is this a genuine Sierra part or a generic aftermarket copy? It is a genuine Sierra International part, model 18-3202, manufactured to meet or exceed the specifications of the original equipment part it replaces.

Does this kit come with any other water pump hardware, like a housing or gasket? No. The 18-3202 kit contains only the impeller (18-3001) and impeller plate (18-3102); it does not include a pump housing, gasket, or wear plate.

How do I know if this kit fits my Johnson or Evinrude motor? Check the horsepower and year of your outboard against the 18-3202 fitment: Johnson/Evinrude 5.5 HP (1954-1964), 6 HP (1952-1978), or 7.5 HP (1954-1958). Because these parts are fit specific, also compare your current impeller and plate part numbers.

What color is the impeller in this kit? The impeller included in the Sierra 18-3202 kit is white.

Can the 18-3202 kit be used to service other Johnson/Evinrude horsepower models not listed? The 18-3202 kit is designed specifically for Johnson/Evinrude 5.5 HP, 6 HP, and 7.5 HP outboard engines within the stated year ranges; fitment for other models is not specified.

How many impellers are in the 18-3202 kit? The kit includes one impeller (Sierra 18-3001) along with one impeller plate (Sierra 18-3102), for a unit count of 1 kit.