Jabsco 18786-0003 Nitrile Impeller
The Jabsco 18786-0003 is a genuine Jabsco nitrile flexible impeller with 9 blades, a 4-5/8 in diameter and a 3-1/2 in width on a 1 in epoxy double flat shaft hub. The nitrile compound suits applications with oil or fuel contamination in the water. It is listed for the Jabsco 17540-0001 and 17540-0201 marine diesel engine cooling pumps.
Impellers are wear parts. Replace one when the blades are cracked, torn or have taken a permanent set, when the pump is slow to prime, or after it has run dry even briefly. Lubricate a new flexible impeller with a little water pump grease before fitting it, and fit a new cover gasket or O-ring at the same time.
Key Features
- Genuine Jabsco impeller
- Listed for 17540 Pumps
- Factory compound and profile
- Restores flow and priming
- Direct replacement
- Keeps the pump in service
Applications
- Jabsco 17540 Pumps
- Jabsco pumps
- Scheduled impeller replacement
- Recovery after the pump has run dry
- Marine and industrial pumps
- Keeping a spare aboard
Specifications
- Brand: Jabsco
- Manufacturer Part Number: 18786-0003
- Part Type: Flexible impeller
- Impeller Compound: Nitrile
- Blades: 9
- Diameter: 4-5/8 in
- Width: 3-1/2 in
- Hub and Drive: 1 in epoxy double flat shaft hub
- Fits: Jabsco 17540-0001 and 17540-0201 marine diesel engine cooling pumps
- Quantity Needed: One per pump
- Condition: New
Frequently Asked Questions
Q: Which way should the blades bend?
They bend back against the direction of rotation. Turning the shaft in the running direction while pushing makes fitting easier.
Q: How long does an impeller last?
It depends on hours, temperature and what is being pumped. Many owners replace it every season.
Q: What causes blades to break off?
Running dry is the main cause. Find every broken piece so it does not block coolers or strainers.
Q: Should I grease the new impeller?
Yes, a light coat of water pump grease helps it survive the first dry seconds.
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.
CLRMarine
