VEHICLE APPLICATIONS: 1997-2000 Lexus GS300; 1998-2000 Lexus GS400; 2000 Lexus SC400.FILTER CROSS REFERENCES: ACDelco CF144; Bosch P3729; MicroGard (3027, 3043); Premium Guard PC5426; Purolator C35426; Toyota 87139-30010.EASY INSTALL: This cabin air filter is located behind the glove box and on average will only take 15 minutes to replace the old filter with a new filter. It is important to replace your cabin air filter periodically to help keep the air in your vehicle clean. During extreme weather and heat, the HVAC system has to work harder and a clean cabin air filter is essential in helping your HVAC system run more efficiently..FRAM Fresh Breeze cabin air filters are the only cabin air filters built with Arm & Hammer baking soda combined with carbon embedded in the filter. Cabin air filters have proven to be essential as air quality can be severely affected by wildfire smoke, pollen, dirt, and other irritants. It is important to replace your cabin air filter periodically to help keep the air in your vehicle clean..This cabin air filter will help protect your vehicles heating and air conditioning unit while allowing for the most efficient air flow into the cabin of your vehicle.