Skipper's Locker

Johnson Pump F75 Flexible MC97 Impeller Kit, 2.56 in OD

Brand:
Johnson Pump
Part no:
09-821BT-1

Where to buy

Specifications

Material
MC97
Outside diameter
2.56 in
Depth (width)
3.15 in
Pumps it fits
F75

This is the Johnson Pump 09-821BT-1 impeller kit for the F75 pump, made from MC97 rubber. It measures 2.56 in across and 3.15 in wide. The MC97 compound is chosen for flexibility, which supports self-priming and cuts down on blades failing from fatigue. The bonding to the hub is described as stronger, to avoid the hub slipping.

Our take

At 2.56 in across and 3.15 in wide, this F75 impeller is cast in MC97 rubber, which the maker says keeps it flexible for self-priming and cuts blade failure from fatigue. Bonding to the hub is described as stronger, to guard against hub slip.

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