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

🔧 Product Description

Aftermarket F7B Spline-Drive Cooling-Water Impeller - Replaces SPX Johnson 09-1028B / 09-1028BT-1

Large spline-drive cooling-water impeller for Johnson F7B pumps. It crosses to the Jabsco 17937 family and a substantial range of Caterpillar, Cummins, Detroit Diesel, MerCruiser, Perkins, Sherwood, Volvo Penta and Yanmar pump references.

⚙️ Key Features

• Material: MC97/neoprene-type cooling-water compound
• Outside diameter: 65.0 mm / 2.56 in
• Width: 50.2 mm / 1.98 in
• Hub bore: approximately 16-17 mm spline family
• Drive: internal spline
• Johnson originals are commonly catalogued as an 8-vane configuration

🚤 Compatibility

Commonly used on

• SPX Johnson F7B and F7B-8 spline-drive pumps
• Jabsco pumps specifying 17937-0001 or the dimensionally matched 920-0001 family
• OEM cooling pumps carrying the listed engine-manufacturer references

Application Details

• Pump / Service Type: High-capacity raw-water engine cooling and clean-water transfer
• Identification: Confirm 65 × 50.2 mm dimensions, spline profile and pump cam/cover depth.
• 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

• 09-1028BT-1 - current SPX Johnson MC97 service designation
• 09-1028B / 09-1028B-1 - legacy/shortened designations

OEM / Related Numbers

• 09-1028B
• 09-1028B-1
• 09-1028BT-1
• 09-1028B-9 - nitrile version
• 260414 - aftermarket catalogue crossover

Direct Same-Material / Configuration Equivalents

• Jabsco: 17937-0001 / 17937-0001-P
• Jabsco: 920-0001 - alternate catalogue family with matching envelope; verify vane and hub detail
• JMP: 7426-01 / 7426-01K; 7400-01 / 7400-01K on the 920-family listing
• CEF: 500114; 500106 on the 920-family listing
• Ancor: J050009
• Caterpillar: 7C3286; 2637536 on the 920-family listing
• Cummins: 650607
• Detroit Diesel: 5193602 / 5196629
• MerCruiser: 47-8013326-01
• Oberdorfer: 7441
• Perkins: 0460024 / 24880031
• Sherwood: 182000 / 18200K
• Vetus: IMP00301
• Volvo Penta: 801277, 825941, 875593, 877061-2, 3588475
• Yanmar: 123325-42020 / 127610-42200

Dimensional or Different-Material Counterparts

• Jabsco 17937-0003, JMP 7400-02, CEF 500206 and SPX Johnson 09-1028B-9 - nitrile counterparts

📦 Condition

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