302497 Water Tube Grommet for Johnson Evinrude Sierra GLM 183329 86492

Product Overview

This water tube grommet seals the connection between the water tube and the water pump housing on Johnson, Evinrude, and Sierra GLM outboards. It prevents coolant leaks and ensures proper water flow to the engine cooling system. Boat owners and marine technicians use this grommet during water pump service to maintain reliable operation.

Key Features & Performance

• Precision-molded rubber grommet for a tight, leak-free seal
• Resistant to heat, oil, and saltwater degradation
• Direct replacement for original Johnson/Evinrude and Sierra GLM parts
• Simple installation – no special tools required
• Essential component for complete water pump overhaul

Fitment & Compatibility

• Johnson outboard motors (select models using water tube grommet #302497)
• Evinrude outboard motors (select models using water tube grommet #302497)
• Sierra GLM aftermarket replacement part numbers 18-3329 and 86492

Common Uses

• Replacing worn or cracked grommet during water pump rebuild
• Eliminating water leaks at the tube-to-pump connection
• Restoring proper cooling circulation in older outboard engines

Technical Specifications

• Part Number(s): 302497, 18-3329, 86492
• Material: Rubber, black
• Fitment Type: Internal water tube grommet
• Compatible Brands: Johnson, Evinrude, Sierra GLM

Frequently Asked Questions

Q: Do I need to replace the water tube grommet every time I service the water pump? A: Yes, it is recommended to replace the grommet during each water pump rebuild to ensure a proper seal and prevent future leaks.

Q: Will this grommet fit my 1990 Johnson 150 HP outboard? A: This grommet fits many Johnson and Evinrude models that use the OEM part number 302497; check your engine's parts diagram to confirm compatibility.

Product appearance and specifications may vary slightly by batch. Compatibility may vary by serial number. Verify fitment before purchase.