09-812BT Johnson Pump F6B-9 High-Speed Spline-Drive Impeller | Genuine OEM Marine Part

🔧 Product Description

Aftermarket F6B-9 High-Speed Spline-Drive Impeller - Replaces SPX Johnson 09-812BT / 09-812B-1

Long twelve-blade spline-drive cooling-water impeller for Johnson F6B-9 high-speed pump applications. It is wider than the standard F5B 09-1027B impeller.

⚙️ Key Features

• Material: MC97 cooling-water compound
• Outside diameter: 57.1 mm / 2.25 in
• Width: 48.2 mm / 1.90 in
• Drive: internal spline
• Blade count: 12
• High-speed F6B-9 configuration

🚤 Compatibility

Commonly used on

• SPX Johnson F6B-9 high-speed spline-drive pumps
• Jabsco pumps specifying 13554-0001
• Volvo Penta pump applications specifying 3588914

Application Details

• Pump / Service Type: High-speed raw-water engine cooling
• Identification: Confirm 57.1 × 48.2 mm dimensions and spline 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

• 09-812BT-1 / 09-812B-1 - current SPX Johnson service designations
• 09-812BT / 09-812B - shortened/legacy designations

OEM / Related Numbers

• 09-812BT
• 09-812BT-1
• 09-812B
• 09-812B-1

Direct Same-Material / Configuration Equivalents

• Jabsco: 13554-0001
• JMP: 7136-01
• CEF: 500124
• Ancor: AN3267
• Volvo Penta: 3588914

Dimensional or Different-Material Counterparts

• SPX Johnson 09-1027B/Jabsco 1210-0001 share the 57.1 mm diameter but are only 31.5 mm wide and are not substitutes

📦 Condition

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