Keeping an outboard running at the right temperature isn’t just about pushing water through the system — it’s about managing flow when conditions shift. That’s exactly what the Mercury Marine Poppet Valve Assembly - 8M0114707 is built to handle. This small but essential part regulates water flow through your cooling system, opening up when your RPMs climb and dialing things back at lower speeds, ensuring your engine runs right where it should — not too hot, not too cold.

Engineered specifically for select Mercury outboards, this poppet valve assembly fits like factory because it is factory. The precision-molded design opens and closes smoothly, adapting to the cooling demands of the engine in real time. It’s built from corrosion-resistant materials that hold up to saltwater exposure and the constant pressure cycles that come with hard running. Whether you’re chasing down an overheating issue or just staying ahead on maintenance, a fresh poppet valve helps keep cooling performance dialed in.

Why it matters:

• Direct-fit design for select Mercury outboards — no modifications needed
• Precision valve action ensures consistent water flow across all RPM ranges
• Corrosion-resistant materials handle salt, heat, and constant pressure
• Helps maintain stable engine temperature for performance and long-term reliability

Best for:

1. Replacing a worn or stuck valve to restore proper cooling system function
2. Preventing overheating and ensuring optimal cooling at high speeds
3. Routine maintenance on high-hour engines running in saltwater or mixed conditions

Temperature control is everything — and with this Mercury poppet valve assembly in place, your cooling system is ready to handle the heat.