Johnson Pumps 09-1026B-9 F4B Nitrile Flexible Impeller for Marine Water Pumps

The Johnson Pumps 09-1026B-9 is a genuine nitrile flexible impeller designed as a direct-fit replacement for Johnson F4B-series flexible impeller pumps. Constructed from oil-resistant nitrile rubber, this impeller is specifically engineered for applications involving diesel fuel, light oils, or other petroleum-based fluids — making it the correct choice where the standard MC97 compound impeller is not suitable.

This six-blade impeller is a critical component responsible for pumping water through the engine's cooling system, as well as supporting water transfer, washdown, and bilge pumping duties. A worn or damaged impeller can lead to overheating, system failure, or engine breakdown, so annual replacement is strongly recommended.

Key Features:

• Material: Nitrile (oil-resistant) — ideal for diesel and light oil pump applications
• Outer Diameter: 2.00"
• Inner Diameter: 0.50"
• Width: 0.87"
• Six-blade flexible impeller design for maximum flow and long service life
• Genuine Johnson Pump OEM replacement — manufactured to exact pump specifications
• Kit includes impeller, O-ring, lubrication gel, and installation instructions

Compatible Pump Models:

• Johnson F4B, F4B-4, F4B-9, F4B-903, F4B/6-M, and F5B series pumps
• Johnson pump models: 10-22055-1, 10-22160-1, 10-24018-1, 10-24018-2, 10-24047-1, 10-24097-1, 10-24097-2, 10-24124-1 through 10-24124-6, 10-24167-1, 10-24167-2, 10-24463-01, 10-24465-01, 10-24751-01, 10-24752-01, 10-31917-1, 10-32588-1, 10-35024-1, 10-35058-1, 10-35064-1, 10-35087-1, 10-35094-1, 10-35098-1 through 10-35098-4
• Jabsco 2620-237, 22950-2037, 52020-2001 pumps

Cross-Reference Part Numbers:

• Jabsco: 0673-0003
• CEF: 500216 GX
• Sierra: 18-3080

Using a genuine Johnson Pump impeller ensures dimensional accuracy and performance compliance with original engine manufacturer specifications. Annual inspection and replacement helps protect your engine's cooling system and prevent costly repairs.