Not sure which 2003 Lexus GS 300 Air Filters - Custom Fit is right for you? We have over 14143 customer reviews, with an average rating of 4.5, to help you find exactly what you're looking for. Here's what some of our customers have said:
"After I use K&N air filter, the average mileage per gallon goes up 8-9%. It will save me a lot of money on gas." —Joshua L from San Gabriel, CA bought a K&N Air Filters for a 2003 Lexus GS 300.