18-3426 - Water Pump Kit 689-W0078

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Part Number

Sierra Marine

18-3426 WATER PUMP KIT With Housing

Replaces: Mercury/Mariner 42431M, 97793M, 97793T; Yamaha 689-W0078-04-00 689-W0078-A4-00


  • 18-3067 Impeller 689-44352-02-00 
  • 18-3244 Impeller Key 664-44338-00
  • 18-2730 Upper Water Tube Seal 664-44365-01
Warranty (PDF)
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Sierra Marine Water Pump Kit is equivalent to parts:

Sierra Marine is the market leader for aftermarket marine engine parts. Sierra products cover every major engine brand. Sierra offers a comprehensive product line and an unsurpassed customer satisfaction warranty covering parts and labor.