Sierra 18-3401 Water Pump Kit Without Housing, Replaces 395271, 394394, 0395270, for Johnson/Evinrude Outboard Motors

The Sierra 18-3401 Water Pump Kit is a replacement water pump rebuild kit for Johnson/Evinrude outboard motors, supplied without a housing. It is designed to restore proper cooling system function when an outboard's water pump impeller and related components have worn out or failed. The kit contains a Sierra 18-3051 impeller (O.E. #395289, qty. 1), the key wear component in an outboard water pump that circulates raw water through the engine's cooling passages to prevent overheating. Because the housing is not included, this kit is intended for rebuilds where the existing housing is still serviceable and only the internal wear parts need replacement.

Sierra manufactures this kit to meet or exceed original equipment quality, giving outboard owners a reliable alternative to sourcing individual OEM parts. It is built to be a direct fit for the Johnson/Evinrude applications it replaces, using the same interface dimensions as the original equipment part numbers it supersedes.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-3401
• Product Type: Water Pump Kit, Without Housing
• Kit Contents: Impeller, Sierra 18-3051 (O.E. #395289), Qty. 1
• Weight: 0.47 pounds

Fitment

• Johnson/Evinrude Outboard Motor

Replaces (OEM)

• 395271
• 394394
• 0395270

Frequently Asked Questions

What is included in the Sierra 18-3401 Water Pump Kit? The kit includes a Sierra 18-3051 impeller (O.E. #395289, qty. 1). The Sierra 18-3401 does not include a water pump housing, so it is meant for rebuilds where the existing housing is reused.

Does the 18-3401 kit come with a housing? No. The Sierra 18-3401 is a water pump kit without housing, so only the internal wear components such as the impeller are included, not the housing itself.

What OEM part numbers does the Sierra 18-3401 replace? It replaces OEM numbers 395271, 394394, and 0395270.

What outboard motors is this water pump kit for? The Sierra 18-3401 is designed for Johnson/Evinrude outboard motors.

How much does the Sierra 18-3401 weigh? The Sierra 18-3401 Water Pump Kit weighs 0.47 pounds.

Is the impeller in this kit a genuine Sierra part? Yes, the impeller included in the 18-3401 kit is Sierra part number 18-3051, corresponding to O.E. #395289.

Is Sierra 18-3401 an OEM part or an aftermarket replacement? The 18-3401 is a Sierra aftermarket water pump kit built to meet or exceed original equipment quality, referencing OEM numbers 395271, 394394, and 0395270.

How many impellers are included in the Sierra 18-3401 kit? One impeller (Sierra 18-3051) is included, quantity 1.

Can I use the Sierra 18-3401 if my existing housing is still good? Yes, the 18-3401 is supplied without a housing specifically for situations where the original housing is still serviceable and only the impeller kit needs replacing.

What does O.E. #395289 refer to on the Sierra 18-3401 kit? O.E. #395289 is the original equipment number for the impeller (Sierra 18-3051) included in the 18-3401 water pump kit.