Material: Made of special material. For better shock resistance and heat dissipation. It lasts longer. And does not require any program, plug and play. Suitable for left or right headlights. Function: In harsh low temperature environments or when working to generate heat, our ballast will not affect the output power due to temperature changes. The lumen value remains unchanged and the brightness remains constant. Installation: This ballast is a direct replacement for your existing components. Designed to meet or exceed OEM specifications. Plug and play installation, no programming or coding required for the car. Quality: Made of materials that meet strict OEM requirements, this product offers stable performance and is an ideal replacement option. Note: To ensure you receive the correct item, please confirm that your OEM number matches the one in the description.