SIERRA Water Pump Impeller – 18-3073

Description

SIERRA Water Pump Impeller – 18-3073

The SIERRA Water Pump Impeller – 18-3073 is a replacement flexible water-pump impeller for marine engine cooling systems. It is intended to restore proper raw-water circulation when the original impeller is worn, cracked, permanently set, or otherwise due for scheduled service.

• Mercury/Mariner and Yamaha 4–5 HP outboard applications; verify by OEM number
• 6 blades
• Outside diameter approximately 39.9 mm
• Direct replacement water-pump impeller for fitment-specific marine applications
• Designed to match the form and function of the referenced OEM impeller

For best results, compare the existing part number and engine/drive application before disassembly. During water-pump service, inspect the mating surfaces, seals and related cooling passages for wear, corrosion or debris that could reduce pump performance.

Specifications

• Manufacturer: SIERRA
• Part number: 18-3073
• Product type: Water Pump Impeller
• Application: Mercury/Mariner and Yamaha 4–5 HP outboard applications; verify by OEM number
• 6 blades
• Outside diameter approximately 39.9 mm
• Width approximately 12.3 mm
• Hub diameter approximately 10.8 mm
• OEM / aftermarket interchange:
  • Mallory: 9-45611
  • Mercury Marine: 47-96305M
  • Yamaha Outboard: 6E0-44352-00-00
• Country of origin: TW
• HS code: 40169990