Yamaha - Water Inlet Cover 1 - Cooling System Component - 6CB-45214-20-00

Overview

This is one of those parts that quietly does its job until it doesn’t—and then you’ve got cooling issues on your hands. The water inlet cover helps manage how water enters the lower unit, keeping flow clean and consistent. I’ve seen engines run hot just from a damaged or clogged inlet area, so it’s not something to overlook. If you’re already servicing the lower unit, it’s a smart piece to inspect or replace while you’re in there.

Key Features

• Controlled Water Intake – Helps regulate water entering the cooling system for consistent flow.

• Debris Protection Design – Shields the intake area from buildup that can restrict cooling.

• OEM Fit Accuracy – Matches Yamaha factory specs for proper sealing and alignment.

• Durable Marine Construction – Built to handle constant water exposure and harsh conditions.

Engine & Boat Compatibility

Verify compatibility with your specific Yamaha outboard model and part number before installation.

FAQs

Q1: What are signs this cover needs replacing?
A: Cracks, corrosion, or reduced water flow at the telltale are common signs.

Q2: Can debris damage this part?
A: Yes, sand, shells, and buildup can wear it down or block proper flow.

Q3: Will this affect engine temperature?
A: Definitely—restricted intake flow can lead to overheating issues.

Q4: Should I check this during water pump service?
A: Yes, it’s a good habit since you’re already working in that area.

Q5: Is this exposed to saltwater damage?
A: Constantly, which is why corrosion resistance matters for long-term reliability.

• Supersessions
  6CB-45214-10-00, 6CB-45214-00-00