One of the most popular filters from Briggs and Stratton on Amazon.com is the 491588S Flat Air Filter Cartridge. BriggsandStratton.com also advertises the 491588S as one of its most popular air filters, alongside the 798452 and 790166.
The Briggs and Stratton 491588S air filter is rated 4.8 of five stars on Amazon.com, with many reviewers happy with its easy installation, snug fit and high quality construction. The filter fits a range of mowers with 3.5 HP to 6.5 HP Quantum engines and 625-1575 series engines fitted in push mowers. Additionally, some users have reported its compatibility with additional brands including Toro.
The 491588S filter is compatible with a range of selected quantum engines and the flat, pleated panel filter is preferred over foam style filters by a number of reviewers on Amazon.com. The 798452 air filter from Briggs and Stratton is also a popular choice of filter, despite it being more costly than other filters as of 2016. The third most popular Briggs and Stratton filter is the 790166 model. It is compatible with a select range of 9-cubic-inch L-Head engines.