Not sure which 2008 Mercury Grand Marquis 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:
"Just a good upgrade for more everything from your intake system stock or aftermarket.Be careful though when you clean and recharge your filter not to over oil it.You can mess up your mass air sensor if you do." —Jonathon K from Walla Walla, WA bought a K&N Air Filters for a 2008 Mercury Grand Marquis, 4.6L V8.