Upgrade your 1st Generation (2000–2006) Toyota Tundra with a cabin air filter system it never had from the factory. This retrofit kit installs directly at the HVAC intake above the blower motor, helping filter incoming air before it reaches your cabin. Designed for quick installation, the kit requires no cutting or permanent modifications and can be installed in just minutes using basic tools. Once installed, it helps reduce dust, pollen, and road debris entering your vehicle, while also helping keep your A/C evaporator cleaner over time. The housing is made from durable automotive-grade ABS and is built for long-term use with replaceable filter media. Here is a video showing how to install: https://www.youtube.com/watch?v=rM6T3DR6cuM