09-1028B-9 Johnson Pump F7B Nitrile Spline-Drive Impeller | Genuine OEM Marine Part

🔧 Product Description

Aftermarket F7B Nitrile Spline-Drive Impeller - Replaces SPX Johnson 09-1028B-9

Oil-resistant nitrile version of the F7B spline-drive impeller. It uses the same 65 × 50.2 mm pump envelope as the water-service 09-1028BT-1 but is selected for diesel, oil and compatible oily-fluid duties.

⚙️ Key Features

• Material: nitrile, oil resistant
• Outside diameter: 65.0 mm / 2.56 in
• Width: 50.2 mm / 1.98 in
• Drive: internal spline
• Commonly catalogued as an 8-vane Johnson configuration

🚤 Compatibility

Commonly used on

• SPX Johnson F7B nitrile spline-drive pumps
• Jabsco pumps specifying 17937-0003
• High-capacity oil and diesel transfer systems using the same F7B spline

Application Details

• Pump / Service Type: Diesel, lubricating oil, oily water and compatible high-volume fluid transfer
• Identification: Confirm nitrile compound, 65 × 50.2 mm dimensions and exact spline.
• 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

• 09-1028B-9 - current verified nitrile service reference

OEM / Related Numbers

• 09-1028B-9
• 09-1028B / 09-1028BT-1 - water-service counterparts

Direct Same-Material / Configuration Equivalents

• Jabsco: 17937-0003
• Jabsco: 920-0003 - related nitrile catalogue family; verify spline and vane configuration
• JMP: 7400-02
• CEF: 500206

Dimensional or Different-Material Counterparts

• Jabsco 17937-0001, JMP 7426-01K, CEF 500114 and SPX Johnson 09-1028BT-1 - water-service material counterparts

📦 Condition

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