Yamaha 5X4-12436-00-00 Drive Gear Assembly for Water Pump Drive System

Description:

The Yamaha 5X4-12436-00-00 Drive Gear is a mechanical transmission component used in engine water pump drive systems. Commonly installed in Yamaha YZ125 motorcycles and similar two-stroke engines to transfer rotational motion to the water pump assembly. Maintenance teams and engine technicians use this part for repair, replacement, and engine rebuild applications to restore proper cooling system operation.

Applications:

The Yamaha 5X4-12436-00-00 Drive Gear is used in Yamaha engine cooling systems where mechanical power is transferred to the water pump for coolant circulation. It is commonly found in Yamaha YZ125 motocross bikes and similar off-road motorcycles, playing a critical role in maintaining engine temperature and preventing overheating. This gear ensures synchronized operation between the engine crankshaft and water pump assembly for reliable cooling performance.

Technical Specifications:

• Brand: Yamaha
• Part Number: 5X4-12436-00-00
• Product Type: Drive gear
• Function: Transfers rotational motion to water pump assembly
• Application: Engine cooling / water pump drive system
• Gear Type: Precision-machined drive gear (approx. 20T configuration)
• Material: Hardened steel or alloy
• Fitment: Yamaha YZ125 and similar models (model-specific compatibility required)
• Mounting Location: Engine internal / water pump assembly
• System Integration: Interfaces with crankshaft-driven gear train
• OEM Status: Genuine Yamaha replacement component

Common Replacements:

• Yamaha 4L0-12436-00-00
• Yamaha 383-12436-00
• Yamaha 329-13178-00