Jabsco 653-0001-P Flexible Neoprene Impeller Service Kit

The Jabsco 653-0001-P is a six-blade neoprene impeller kit for compatible marine water pumps. Its compact 51 mm diameter and 22 mm depth are combined with a brass insert and slotted shaft pin drive. The 12 mm nominal shaft dimension is an important distinction from several similar-looking Jabsco service parts.

Technical Data & Parameters

• Manufacturer: Jabsco (Xylem)
• Part number (MPN): 653-0001-P
• Impeller material: Neoprene
• Jabsco profile: G
• Number of blades: 6
• Outside diameter (A): 51 mm
• Depth (B): 22 mm
• Nominal shaft diameter (C): 12 mm
• Drive type: Slotted shaft pin drive (Jabsco type 1)
• Insert material: Brass

Choosing the Correct Replacement

Choose this impeller against the pump parts list and check the actual shaft fitting. Jabsco specifies a 12 mm nominal shaft size, also shown as 15/32 inch in its selection table. Do not round this up to the 12.7 mm half-inch fitting used by the 673 and 22799 families.

Similar Impellers: What to Check

The 673-0001 has six blades and the same overall diameter and depth, but a 12.7 mm shaft fitting. The 18653-0001 uses a nominal 12 mm pin-drive fitting but has ten blades. Confirm the complete part specification when identifying an unmarked impeller.

OEM References & Cross-References

Jabsco lists the following reference numbers for this impeller family:

• CEF: 500101
• Johnson: 09-810B
• Northern Lights: 25-18325
• Volvo Penta: 804696, 897055, 875808-8
• Westerbeke / Universal: 34440

Use these numbers to identify the original impeller, then confirm the pump model and current replacement specification. An engine brand alone does not establish compatibility.

Service Kit Selection

This listing is the packaged -P impeller version. Match any supplied gasket or seal to the fitted pump and use only the correct end-cover sealing arrangement. An impeller service pack is not a complete pump overhaul kit: inspect the shaft, cam, cover and seals separately, and order additional worn parts as required.

Why Choose This Impeller?

• Correct replacement specification: The 6-blade configuration and slotted shaft pin drive (jabsco type 1) help identify the required service part.
• Neoprene for water duties: Suitable for fresh and salt water applications where approved for the pump.
• Serviceable component: Replacing the impeller allows a compatible pump to be maintained without automatically replacing the complete assembly.

Installation & Maintenance

Follow the fitted pump's service instructions. Isolate its drive and close the relevant seacock before opening it. Remove the old impeller with a suitable tool, inspect the chamber for wear and recover any missing blade fragments. Fit the correct cover gasket or seal and lubricate the replacement with an installation lubricant approved for the pump and neoprene.

Restore the water supply before starting, then check for leaks and normal water delivery. Avoid dry running. Include the impeller in routine servicing and keep a matching spare available for essential onboard systems.