260402 Johnson Pump Impeller 500102T | Genuine OEM Marine Part

🔧 Product Description

Aftermarket 65 mm Key-Drive Cooling-Water Impeller - Reference 260402 / CEF 500102T

Eight-blade key-drive neoprene impeller sold under catalogue reference 260402. It corresponds primarily to CEF 500102T and Jabsco 4598-0001 rather than to a Johnson OEM number.

⚙️ Key Features

• Material: neoprene, cooling-water service
• Outside diameter: approximately 65 mm / 2.56 in
• Width: approximately 50.2-50.8 mm / 1.98-2.00 in
• Hub bore: approximately 15.9-16 mm
• Drive: keyway, commonly half-length
• Blade count: 8

🚤 Compatibility

Commonly used on

• Jabsco pumps specifying 4598-0001
• CEF applications specifying 500102T
• Sherwood, Oberdorfer, Volvo Penta and Renault pumps carrying the listed references

Application Details

• Pump / Service Type: Raw-water engine cooling and clean-water transfer
• Identification: Confirm 65 × approximately 50.5 mm dimensions, 16 mm bore and keyway length.
• 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

• 260402 - aftermarket catalogue SKU
• CEF 500102T - primary replacement reference

OEM / Related Numbers

• 260402
• 500102T
• Jabsco 4598-0001

Direct Same-Material / Configuration Equivalents

• Jabsco: 4598-0001 / 4598-0001-P
• CEF: 500102T
• Sherwood: 10187K / 12338K
• Oberdorfer: 6603
• Volvo Penta: 818680
• Renault Marine: 48300008
• DJ Pump: 09-46-0801 / 09-460-801

Dimensional or Different-Material Counterparts

• Fynspray pumps can use a similar 65 mm impeller, but Australian catalogues specify 260490 for the Fynspray full-keyway application; do not substitute 260402 without checking keyway length

📦 Condition

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