Coolant Pump Impeller SIERRA 118-3368

Compatible Engines

The SIERRA 118-3368 coolant pump impeller is a critical component of the cooling system, specifically engineered for Johnson/Evinrude outboard motors. This part is primarily designed for engines with 40 HP (manufactured 1984-1988) and 45/55 HP (1986-1994). The impeller's precise dimensions, measuring 70x12.3x16 mm, ensure a perfect fit within the pump housing, which is essential for maintaining a consistent flow of cooling water.

As official source data lacks a detailed compatibility list for other models, we recommend verifying compatibility by cross-referencing the manufacturer's catalog number 118-3368 or the original OE number with your engine's technical documentation. If you have any doubts about selecting the correct part, please contact our customer support. Our specialists are happy to help you confirm whether this impeller is suitable for your propulsion unit, preventing unnecessary returns and service delays.

Installation and Maintenance

• SIERRA Original Quality – guarantees durability and compliance with engine manufacturer standards.
• Perfect Fit – precise 70x12.3x16 mm dimensions ensure tightness and efficient operation.
• Easy Replacement – simple design facilitates the removal of the old and installation of the new impeller.
• Engine Protection – effective heat dissipation prevents the propulsion unit from overheating.

A properly functioning coolant pump is the foundation of your engine's reliability. A worn impeller can cause drops in water pressure, leading to rapid engine overheating and permanent damage. Regular inspection of the impeller's condition, especially before the sailing season, is the best investment in water safety. Remember that impeller replacement is one of the simplest and most cost-effective maintenance services, which can save you from expensive main engine repairs. By choosing the SIERRA 118-3368 part, you gain peace of mind and confidence that your Johnson or Evinrude will operate efficiently and safely.