The Jabsco 18958-0001-P is a genuine Jabsco neoprene impeller kit for larger raw water cooling pumps. This heavy 12-blade, key-drive impeller measures 3-1/4 inches in diameter and 2-57/64 inches wide, with a brass insert bored for a 25/32 inch keyed shaft. Its long body and large blade area are built for the high cooling-water volume that bigger marine diesel engines demand.
Because larger engines depend on high flow to stay cool, a tired impeller shows up quickly as rising temperature under load. Replacing it with a fresh, correctly sized neoprene impeller restores full suction and flow. Confirm the diameter, width and shaft size against your old impeller or pump plate before ordering, since similar-looking impellers are not interchangeable.
Key Features
- Genuine Jabsco 18958-0001 impeller kit in retail packaging
- Large 12-blade neoprene impeller for high-volume cooling flow
- Brass insert with key drive for a 25/32 inch keyed shaft
- Extra-wide 2-57/64 inch body for large raw water pumps
- Neoprene compound suited to fresh and salt water
Applications
- Raw water cooling pumps on larger marine diesel engines
- Commercial and workboat engine seawater pumps
- Heavy-duty flexible impeller pumps that use the 18958-0001 impeller
- Spare impeller for offshore and long-range vessels
Specifications
- Part Number: 18958-0001-P
- Impeller Material: Neoprene
- Number of Blades: 12
- Diameter: 3-1/4 in (82.5 mm)
- Width: 2-57/64 in (73.4 mm)
- Shaft: 25/32 in (19.75 mm)
- Drive Type: Key drive
- Insert: Brass
- Temperature Range: 45 to 180 F (7 to 82 C)
Frequently Asked Questions
Q: How do I confirm this is the right size for my pump?
Measure the old impeller's diameter, width and shaft bore, or check the part number on the pump plate. All three measurements must match.
Q: Can I run this impeller in a pump that handles fuel or oil?
No. Neoprene is for water and water-glycol service. Oil and fuel will swell and break down the blades.
Q: How often should a large engine impeller be changed?
Many operators change it every season or at each major service. Commercial engines running long hours often change it more frequently.
Q: What else should I replace with the impeller?
Replace the cover gasket or O-ring, and inspect the wear plate and cam. A scored wear plate lets water slip past the blades and reduces flow.
Not sure this is the right part? Send us a Picture of the Pump Plate on your pump and the CLR Marine team will confirm the correct impeller kit.
CLRMarine
