Overview

The Jabsco 17018-0001-P is a neoprene flexible impeller for pumps that use an 8-blade rotor with a 2-9/16 in outside diameter, 3 in depth, 5/8 in shaft diameter, and spline drive.

This is the kind of replacement part boat owners usually need for raw-water pump service, where exact fit matters more than anything else. The 3 in depth is a key detail here, because impellers with the same diameter and shaft size can still be wrong if the width or drive style does not match.

Neoprene is commonly used for engine cooling and general water transfer duty. On board, this impeller makes sense as both a scheduled service item and a spare kept in the engine room, since a worn or damaged impeller can reduce cooling water flow without much warning.

Key features

• 8-blade neoprene impeller for flexible impeller pumps used in marine water service
• Exact fit dimensions of 2-9/16 in diameter x 3 in depth with a 5/8 in shaft diameter
• Spline drive hub for pumps that require this drive pattern
• Brass insert at the hub for the specified shaft connection
• Useful replacement for raw-water cooling systems and other water-transfer pumps that match these measurements and drive type

Compatibility and fit

Before ordering, match all of the critical fit points on the old impeller or the pump data: outside diameter, depth, shaft diameter, blade count, material, and drive style. Diameter alone is not enough. An impeller that is close in size but different in depth or hub pattern can install poorly, prime badly, or damage the pump body and cover.

This part is a good match for owners servicing a flexible impeller pump on an inboard engine, generator, or utility water pump where these dimensions are already known. It is especially useful for skippers who do their own routine maintenance and want the correct spare on board rather than a near match.

Installation and service

When replacing the old impeller, remove the end cover and pull the impeller from the hub with the proper tool or by gripping the hub carefully. Avoid levering against the pump body with screwdrivers, since that can mark the sealing face and lead to leaks.

Before startup, apply a light coating of grease to the new impeller and the pump bore so it slides in cleanly and has protection during initial prime. Replacing the impeller on a regular schedule and carrying a spare on board is standard practice for boats that depend on raw-water cooling.