Quicksilver Sea Water Pump Impeller Replacement Kit for MerCruiser One-Piece Pump Body — OEM Fit, 4‑Piece

Quicksilver 59362T6 is a four-piece impeller replacement kit engineered to restore reliable sea water cooling for MerCruiser engines with one-piece pump bodies.

This kit includes an impeller, face plate and two O-rings sized for MerCruiser engine-mounted sea water pumps with a one-piece plastic body. Manufactured to Mercury Marine original equipment specifications, the components are designed to deliver consistent coolant flow and durability across the boating season. Quicksilver has supplied marine-grade parts and fluids for over six decades, focusing on fit, material resilience and performance so your sterndrive receives factory-level protection.

How will this kit affect engine cooling performance?

Replacing worn impeller components restores the pump’s ability to draw and circulate raw water through the engine’s cooling passages. A fresh impeller and correctly sized plate help maintain optimal flow rates, preventing overheating caused by reduced coolant delivery.

• Impeller elastomers engineered for flexibility over wide temperature ranges
• Face plate matched to impeller for consistent seal and flow
• O-rings ensure a leak-free connection to the pump housing
• Manufactured to Mercury Marine OEM standards for reliable fit

What exactly is included and why are those pieces important?

The kit contains four parts tailored for a one-piece plastic pump body: the impeller, the metal or composite face plate, and two rubber O-rings. Each part plays a specific role in maintaining the pump’s sealing, rotation and water delivery, so replacing all items together reduces the chance of premature failure.

• Impeller: primary moving component that pushes cooling water
• Plate: provides a wear surface and helps maintain pumping efficiency
• Primary O-ring: seals pump body to prevent external leaks
• Secondary O-ring: seals internal components for reliable pressure

How simple is the installation for a MerCruiser one-piece pump?

Installation is straightforward for anyone comfortable with basic marine maintenance and standard hand tools. The parts are made to OEM tolerances so they align with MerCruiser pump housings; typical replacement can be completed during routine maintenance or as part of a winterization service.

• No special tools required beyond common socket and screwdrivers
• OEM-fit parts reduce time spent adjusting or fitting components
• Replacing the impeller and seals together minimizes repeat servicing
• Works with engine-mounted sea water pumps that use a one-piece body

How does Quicksilver quality compare to aftermarket options?

Quicksilver parts are produced to Mercury Marine original equipment specifications, matching the materials and tolerances of the factory components. That means improved interchangeability, predictable performance and longevity compared with generic aftermarket pieces that may vary in elastomer formulation or dimensional precision.

• OEM-spec manufacturing for consistent fit and flow
• Elastomers selected for season-long flexibility and wear resistance
• Broad testing history from a leading marine supplier
• Backed by decades of marine parts expertise

Who is this for: This Quicksilver 59362T6 kit is intended for MerCruiser owners and marine technicians who maintain engine-mounted sea water pumps with a one-piece plastic body. It's ideal for boaters who want factory-compatible replacement parts to preserve cooling system reliability and reduce downtime during the boating season. If you perform regular engine maintenance or prepare your sterndrive for extended use, this kit gives the key wearable components needed to keep seawater cooling functioning as designed.