Mercury – Water Pump Impeller | Yamaha 4.2L Cooling System | Marine-Grade Polymer | 8M6010334

Overview

Every boater knows the sound of an engine that’s running just right—the steady hum, the smooth push, the subtle confidence that tells you everything below the deck is doing its job. The Quicksilver 8M6010334 Water Pump Impeller is one of the quiet heroes behind that feeling. On powerful 4.2L Yamaha 200–300hp outboards, cooling isn’t optional—it’s essential. This impeller keeps that cooling system alive and moving, letting you focus on the horizon instead of worrying about rising temperatures. Whether you’re chasing tuna miles offshore or easing into a shallow creek at sunset, there’s real peace of mind in knowing your engine is staying cool, steady, and protected.

Key Features

• Fits select 200–300hp Yamaha 4.2L outboards with 25–30 inch driveshafts
• Built to meet all OEM specifications for water flow and cooling performance
• Water pump impeller only — replacement hardware sold separately
• Replaces Yamaha OEM 6CE-44352-00-00
• Essential for maintaining proper engine temperature and long-term outboard health

Engine & Boat Compatibility

• Compatible with 4.2L Yamaha 200hp, 225hp, 250hp, and 300hp outboards
• Works with Yamaha models using 25-inch through 30-inch driveshafts
• Suitable for a wide range of boats, including:
  • Offshore center consoles
  • Bay boats and hybrid coastal hulls
  • Large pontoons
  • Walkarounds and sportfishing vessels
  • High-performance skiffs and inshore rigs

Performance & Practical Benefits

A worn water pump impeller doesn’t fail loudly—it fails quietly. And on engines this powerful, that can turn into an expensive day on the water. With the Quicksilver 8M6010334 installed, you’ll feel the difference where it matters:

• Consistent, reliable cooling, even on long high-speed runs
• Tight and efficient water flow, keeping cylinder temperatures steady
• Smooth engine response, especially during heavy load or hot-weather conditions
• A noticeable sense of security, knowing your 4.2L outboard isn’t flirting with overheating
• Easier maintenance planning thanks to predictable, OEM-quality performance

This impeller is built for boaters who run hard, push their gear, and expect their engines to match their pace. It’s the simple part that supports the whole system.

Why Buy OEM

Cooling isn’t the place to cut corners. Here’s why seasoned boaters stick with OEM-grade components like this one:

• Designed by Quicksilver to match Yamaha’s exact fit and performance requirements
• Long-term durability in saltwater, brackish water, and freshwater environments
• Reliable installation—no guesswork, no retrofitting, no “good enough” sizing
• Protects your investment by preventing temperature-related engine wear
• Proven performance backed by Mercury Marine’s quality standards

Think of it as the trusted replacement your outboard was built to use from day one.

FAQ

Q1: Which engines does this impeller fit?

It’s made for select Yamaha 200–300hp 4.2L outboards with 25–30 inch driveshafts.

Q2: How does this differ from aftermarket impellers?

OEM-spec components maintain exact cooling flow rates and material durability, giving you dependable, long-term protection.

Q3: How do I confirm it fits my engine?

Match your Yamaha part number to 6CE-44352-00-00 or check your service manual.

Q4: Is it suitable for saltwater?

Yes—its marine-grade materials are built for harsh saltwater conditions.

Q5: Is installation easy?

Most mechanically comfortable boaters can replace an impeller with basic tools. Follow your Yamaha service manual for proper torque and alignment.