09-1026B Johnson Pump F4B Impeller | Genuine OEM Marine Part

🔧 Product Description

Aftermarket F4B Pin-Drive Cooling-Water Impeller - Replaces SPX Johnson 09-1026B / 09-1026B-1

Six-blade flexible impeller matched to the Johnson Pump F4B pin-drive pump family. This is the standard water-cooling compound version with a 12.7 mm pin-drive hub, not the oil-resistant nitrile 09-1026B-9 version.

⚙️ Key Features

• Material: MC97/neoprene-type cooling-water compound
• 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 pumps using the 12.7 mm pin-drive shaft
• Jabsco pumps specifying 673-0001
• Perkins and Volvo Penta engine-cooling pumps specifying one of the listed OEM numbers

Application Details

• Pump / Service Type: Raw-water engine cooling, bilge and general clean-water transfer
• Identification: Confirm 50.8 × 22 mm size, 12.7 mm bore and transverse 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-1 - current SPX Johnson MC97 service designation
• 09-1026B - shortened/legacy catalogue designation

OEM / Related Numbers

• 09-1026B
• 09-1026B-1
• 09-1026B-9 - nitrile version; different compound

Direct Same-Material / Configuration Equivalents

• Jabsco: 673-0001 / 673-0001-P
• JMP: 7051-01 / 7051-01K
• CEF: 500116
• Sierra Marine: 18-3080
• Perkins: 24880194
• Volvo Penta: 804696, 897055, 875808, 3586497, 3593659, 22222936

Dimensional or Different-Material Counterparts

• Jabsco 673-0003, JMP 7051-02 and CEF 500216 - same basic dimensions in nitrile for oil/diesel service
• SPX Johnson 09-1026B-9 - nitrile material counterpart

📦 Condition

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