Yanmar 1GM impeller pump 128170-42200

The Yanmar 1GM impeller pump 129573-42500 (also known as the cooling water pump or raw water pump) is essential for the cooling system of various Yanmar marine diesel engines, such as the Yanmar 1GM and 1GM10. This bronze pump pumps seawater (or raw water) through the engine’s cooling system. It contains a neoprene impeller and has a flange mount with a cover secured by 3 bolts. This part replaces older numbers such as 128170-42000 and 128170-42050.

Key Features and Benefits:

Function: Pumps seawater (raw water) through the engine’s cooling system.
Material: Made of bronze with a neoprene impeller for durability.
Mounting: Flange mounting with a cover secured by 3 bolts for easy installation.
Compatibility: Specifically for Yanmar 1-cylinder GM series engines, such as 1GM and 1GM10 variants.
Replaces older numbers: Replaces part numbers 128170-42000 and 128170-42050 for improved performance.
O-Ring: A separate mounting O-ring (part number 24321-000350) must be ordered during installation.