Overview

The Jabsco 17937-0001-P is a replacement impeller kit for compatible water-service flexible impeller pumps. It uses a neoprene impeller with 10 blades, a brass spline-drive insert, a 2-9/16 in diameter, a 2 in depth, and a 5/8 in shaft size.

This is the part you buy when the old impeller starts taking a set, loses prime, or sheds vane pieces in a raw-water or transfer pump that matches this profile. On a boat, that usually shows up first as reduced cooling water flow or weaker pump performance, so matching the part number, diameter, depth, blade count, and drive style to the existing impeller is the cleanest way to confirm fit.

Key features

• Neoprene flexible impeller for water-service pump duties
• 10-blade profile matched to this replacement part number
• Brass spline-drive insert for the correct hub engagement on compatible pumps
• 2-9/16 in outer diameter, 2 in depth, and 5/8 in shaft size for fit checks before ordering
• Replacement kit format that suits routine pump service and spare-parts planning on board

Compatibility and fit

This impeller is used as a service replacement in selected bronze flexible impeller pumps found on marine engine cooling, bilge, transfer, and other water-moving duties. The most reliable fit check is to match the existing Jabsco part number or cross-check the old impeller against the diameter, depth, blade count, and spline hub before installation.

It is a sensible match for owners who service their raw-water pump on a schedule and want the correct spare aboard. That matters most on cruising and fishing boats where a failed impeller can turn into an overheating problem or an unplanned stop.

Installation and maintenance

Impeller replacement is straightforward once the pump cover is off, but the pump body and cover face need to stay clean and undamaged during the job. Lubricating the new impeller before startup helps it slide into the bore and gives it some protection during the first prime.

For boats that log regular engine hours, keeping a spare impeller kit on board is part of practical preventive maintenance. Replacing the impeller before it hardens or drops vane pieces is usually easier than chasing cooling-water problems underway.