How do parts retailers rank for year, make and model searches?
By having a page that matches the vehicle. A shopper rarely searches for running boards. They search for running boards for their specific truck. Category pages organized by vehicle, with clear fitment information, let one well-built page answer hundreds of those searches.
The catch is that vehicle filters can generate millions of URLs. Alan Morgan Group decides which vehicle and category combinations deserve an indexed page based on search demand, and keeps the rest out of the index so search engines spend their time on the pages that sell.