Some vehicle headlight assemblies are sealed off with a dust cap, dust cover, or headlight cover to prevent dust, moisture, humidity, etc. from entering the assembly.
Although these covers generally fit over our LED bulbs just like for halogen bulbs, they don't for certain vehicles with very small or tight assemblies.
Since our LED bulbs do a great job of insulating the inside of the assembly, it is safe in the majority of vehicles to keep these covers off. If your vehicle is very low to the ground or exposed to high levels of water, mud, moisture, etc. you can purchase an oversized cap that will fit over the LED bulbs on eBay or Amazon for very cheap.
As per our Terms & Conditions, given that LED bulbs contain extra components not found in halogen bulbs (including but not limited to micro-fans, drivers, etc.) some vehicles with a smaller headlight or fog light housing and/or dust covers may require minor modifications to complete the installation. It is the customer's responsibility to ensure that installing an LED conversion kit is feasible before ordering.