09-1026B-9 Johnson Pump F4B Nitrile Pin-Drive Impeller | Genuine OEM Marine Part

🔧 Product Description

Aftermarket F4B Nitrile Pin-Drive Impeller - Replaces SPX Johnson 09-1026B-9

Oil-resistant six-blade nitrile impeller for Johnson F4B pumps with a 12.7 mm pin-drive shaft. It shares the 09-1026B cooling-water impeller dimensions but uses a compound suited to diesel, lubricating oil and oily-water transfer.

⚙️ Key Features

• Material: nitrile, oil resistant
• Outside diameter: 50.8 mm / 2.00 in
• Width: 22.0 mm / 0.87 in
• Hub bore: 12.7 mm / 0.50 in
• Drive: transverse pin drive
• Blade count: 6

🚤 Compatibility

Commonly used on

• SPX Johnson F4B nitrile pumps using the 12.7 mm pin-drive shaft
• Jabsco pumps specifying 673-0003
• Fuel, oil and oily-water installations requiring this exact impeller envelope

Application Details

• Pump / Service Type: Diesel, lubricating oil, oily water and compatible fluid transfer
• Identification: Confirm nitrile material, 50.8 × 22 mm size, 12.7 mm bore and pin drive.
• Always compare the removed impeller or pump against the listed dimensions, drive style, material and housing depth before installation.

🔌 Function

The flexible vanes form expanding chambers on the inlet side and contracting chambers on the discharge side. This produces self-priming suction and moves cooling water or other compatible fluids through the pump.

⚠️ Common Signs of Failure

• Reduced flow or inability to prime
• Engine overheating or weak cooling-water discharge
• Pulsing flow, cavitation or unusual pump noise
• Vanes are cracked, hardened, flattened or missing
• Hub has slipped, corroded or loosened from the rubber body
• Impeller has been damaged by dry running, debris or incompatible fluid

🔄 Supersession & Cross Reference

OEM / Manufacturer Number Progression

• 09-1026B-9 - current verified nitrile service reference

OEM / Related Numbers

• 09-1026B-9
• 09-1026B / 09-1026B-1 - water-service material counterpart

Direct Same-Material / Configuration Equivalents

• Jabsco: 673-0003
• JMP: 7051-02
• CEF: 500216

Dimensional or Different-Material Counterparts

• Jabsco 673-0001, JMP 7051-01/7051-01K, CEF 500116 and Sierra 18-3080 - dimensional water-service counterparts using neoprene/MC97

📦 Condition

• Brand-new aftermarket replacement impeller
• New and unused
• Supplied in suitable manufacturer or equivalent protective packaging