All impellers are dynamically balanced, and then the aluminum alloy is passivated for protection. Motorcycle engine water pump impeller is made of Metal, which is very easy to crack and damage under long-term work and high-speed and high-pressure working environment. The aging and cracking of plastic impellers seriously affect the water circulation, and cause irreversible damage in the high temperature environment of the engine, and even go on strike directly! This aluminum alloy CNC processed impeller uses the your car impeller scan drawing, one-to-one copy of the your impeller parameters, and retains all the designs of the your car impeller The aluminum alloy impeller is ultra-light and high- CNC processed. Each impeller is wear-, does not increase water flow resistance, is -, does not rust, and prevents impeller cracking. Improve water circulation, plastic soft crack and deform when the water temperature is high, while aluminum alloy not deform and maintain its initial state for efficient circulation. Name: Water Pump Impeller Condition: New Installation position: Water Pump Suitable for EXC XCW SX 125 150 250 300 350 450 500 530 Note: -Products can be installed and use without modification, easy to install, no installation instructions. -, not easy to fade and not rust. -The appearance of the fashion design, excellent technology is more suitable for your bike. -Please confirm that this product is suitable for your motorcycle when placing an order. -If you have any questions when purchasing this product, please contact me. Color: Silver Material: Metal Package Contents: 1 x Motorcycle Water Pump Cooler Impeller Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.