Jabsco Neoprene Impeller Kit 18777-0001-P Flexible Raw Water Pump Service Kit

The Jabsco 18777-0001-P Neoprene Impeller Kit is a complete service kit designed for Jabsco flexible impeller raw water pumps used in marine engines and auxiliary systems. This kit includes a high-quality neoprene impeller along with gasket and installation components to restore proper cooling water circulation and ensure reliable performance.

The impeller is a critical wear item that continuously moves water through the cooling system. Over time, the rubber vanes can wear, harden, or crack, reducing efficiency and increasing the risk of overheating. Replacing the impeller regularly ensures consistent water flow and protects your engine from costly damage.

Manufactured to Jabsco OEM standards, this kit delivers dependable operation in both freshwater and saltwater environments.

Key Features

• Complete raw water pump impeller service kit
• Neoprene impeller for standard marine applications
• Includes gasket and installation components
• Maintains proper cooling water circulation
• Precision fit for Jabsco flexible impeller pumps
• Durable marine-grade construction

Engine Compatibility

Jabsco Pump Applications

Fits Jabsco flexible impeller pumps commonly used on:

• Inboard gasoline engines
• Marine diesel engines
• Generator sets
• Marine air conditioning systems
• Auxiliary engines

Common across:

• Crusader
• PCM
• Westerbeke
• Yanmar (select applications)
• Universal

Serial Number Fitment Notice

Fitment depends on the exact pump model, not engine size.

Always confirm:

• Pump model number
• Impeller dimensions (diameter, width, shaft type)
• OEM part number match (18777-0001-P)

When This Part Needs Replacement

Replace the impeller if you notice:

• Reduced or no water flow
• Engine overheating
• Cracked, missing, or stiff vanes
• Debris in cooling system
• After seasonal storage

Recommended service interval: every 100 hours or annually

Installation Notes

• Lubricate impeller before installation
• Install with correct vane rotation
• Replace gasket included in kit
• Inspect pump housing and wear plate
• Check for broken vane debris in system

Alternate / Superseded Part Numbers

OEM Cross References

• Jabsco: 18777-0001-P

Aftermarket Cross References

• Johnson Pump: 09-1026B-9 (verify application)
• Sierra Equivalent: 18-3127 (verify fitment)

Shipping

Shipping: Ships same or next day for fast Canada wide shipping.

Parts Desk Insight

Larger Jabsco impellers like this are often used on higher flow systemsso when they start to fail, overheating can happen quickly.

Staying ahead of impeller maintenance is one of the best ways to protect your engine and avoid downtime