Skipper's Locker

Johnson Pump F7 Nitrile Flexible Impeller Kit, Splined Shaft

Brand:
Johnson Pump
Part no:
09-1028B-9

Where to buy

Specifications

Material
Nitrile
Blades
8
Outside diameter
2.56 in
Depth (width)
1.98 in
Drive
Splines
Pumps it fits
F7

This Johnson Pump kit is a nitrile flexible impeller for the F7 pump, with a splined shaft drive. It measures 2.56 in across and 1.98 in wide, and it is listed as the replacement for Jabsco 17937-0003. Nitrile is the oil-resistant material in this range; the maker's cooling impellers are MC97/EPDM or neoprene. The part number is 09-1028B-9.

Our take

The 2.56 in by 1.98 in size and splined shaft, listed as a swap for Jabsco 17937-0003, are the details to check against the old impeller. It is nitrile, the oil-resistant material, rather than the neoprene or EPDM used for cooling.

From our buying guide

The impeller depends on the pump, so find it by the pump's model number. Makers' schedules differ, with some saying every year and others every 300 hours or three years, so go by the one for your engine.

Check before you buy:

  • It matches your old one on blade count, shaft diameter, outside diameter, material, drive type and depth.
  • You've checked any substitute against the pump housing, since cross-references are the makers' own claims.
  • The material suits the job. Jabsco recommends neoprene for engine cooling, and nitrile for bilge pumping and water with oil or diesel.

Sources