Mercury – Quicksilver Water Pump Impeller | Cooling System Component | Marine-Grade Rubber | 19453T

Overview

Your outboard’s cooling system is what keeps it performing smoothly, and the Mercury Marine 19453T Quicksilver Water Pump Impeller is at the heart of that system. Designed for Mercury 3-cylinder 30–60 horsepower FourStroke outboards and select Force 75HP models, this OEM impeller delivers the flow and reliability your engine needs to stay cool under load. Built from high-flexibility marine-grade elastomers, it handles heat, friction, and pressure without cracking or tearing — giving you peace of mind every time you start the motor.

Key Features

• Purpose: Circulates cooling water through the engine to maintain safe operating temperature.
• Material: Made from premium marine-grade rubber elastomer that stays flexible across a wide temperature range.
• Design Detail: Reinforced center insert resists tearing for consistent performance and long life.
• Performance: Maintains steady water flow for reliable cooling, even at low speeds or high RPM.
• Fitment: Built to Mercury Marine OEM specifications for a perfect fit and easy installation.

Engine & Boat Compatibility

• Mercury 30–60HP FourStroke 3-cylinder outboards with serial number 1C049739 and newer.
• 75HP outboards (serial numbers 0E288000–0E344999).
• Commonly found on fishing boats, pontoons, and family runabouts.
• Suitable for use in both freshwater and saltwater environments.

Performance & Practical Benefits

The 19453T impeller keeps your cooling system performing at its best by ensuring constant water circulation. Its flexible blades maintain proper pressure and flow, preventing overheating even when idling for long periods or running wide open.

The upgraded elastomer material maintains strength and flexibility through extreme temperatures, while the reinforced hub insert ensures durability under continuous use. Replacing your impeller as part of regular maintenance ensures smooth operation, reliable cooling, and long-term engine protection.

Why Buy OEM

An impeller may look simple, but it’s precision-engineered for your motor’s specific pump system. The Quicksilver 19453T is a genuine Mercury Marine part, molded and tested for durability, flow rate, and fit. Cheaper aftermarket impellers can distort or lose tension under load, leading to overheating or early failure.

With OEM quality, you know the materials, tolerances, and performance have been verified by Mercury engineers. It’s a small investment that ensures your engine stays cool, efficient, and ready for the water.

FAQ

Q1: Which engines use this impeller?
It fits Mercury 3-cylinder 30–60HP FourStroke outboards (1C049739 and above) and Force 75HP (0E288000–0E344999).

Q2: What’s the impeller made from?
It’s made from durable, high-flexibility marine-grade rubber for long-lasting performance.

Q3: How often should I replace it?
Inspect annually and replace every 100 hours or one season, depending on usage and water conditions.

Q4: Can it handle saltwater?
Yes. The material resists salt, heat, and wear in any marine environment.

Q5: Why is OEM better than aftermarket?
OEM impellers are molded to exact dimensions, ensuring proper water flow and long service life without risking engine damage.