Not sure which 2003 Nissan Frontier 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:
"I installed in about the same time I put a Tonneau cover on, I immediatly got 2+ more MPG and feels better coming off the line and at freeway speeds." —Ian C from Carbondale, CO bought a K&N Air Filters for a 2003 Nissan Frontier.