SIERRA 118-3587-1 Raw Water Pump

Compatible Engines

The SIERRA 118-3587-1 raw water pump is a critical component of the cooling system, ensuring optimal operation of your marine propulsion unit. Due to the lack of official manufacturer data listing specific engine models compatible with this part, compatibility must be verified using the manufacturer's catalog number (118-3587-1) or the OE number. We recommend carefully comparing markings before purchasing. If you have any doubts about whether this part fits your outboard motor, please contact our customer support for assistance with verification.

Installation and Operation

Replacing a raw water pump requires caution and precision. Before starting work, ensure the engine is turned off and the power supply is disconnected. Read the installation instructions included with the part carefully to avoid damaging seals or the housing. During installation, pay attention to the water flow direction, which is usually marked on the pump body. Neglecting this can lead to insufficient cooling and engine overheating. After installation, it is recommended to check the system for leaks and pump performance before taking the boat out on the water.

• Original SIERRA quality – guarantees durability and reliability in harsh marine conditions.
• Precision engineering – ensures optimal water flow and effective heat dissipation.
• Easy replacement – the design facilitates removing the old pump and installing the new one without specialized tools.
• Corrosion resistance – materials used protect the component from saltwater damage.
• Unique catalog number 118-3587-1 – simplifies identification and selection of the correct spare part.