796031 Air Filter Replace for BS 992376 590825 591334 594201 OEM Air Cleaner Cartridge with 797704 Pre Filter Fits Lawn Mower Air Cleaner Element

What It Is

This is a two-piece air filter set (main filter cartridge and foam pre-filter) that replaces several Briggs & Stratton OEM part numbers. It’s designed for small engines on walk-behind mowers, riding mowers, and some generators or pressure washers that use a round, foam-and-paper air cleaner assembly.

Fitment & Compatibility

• Check your engine’s OEM part numbers: This replaces B&S 992376, 590825, 591334, 594201 (main filter) and 797704 (pre-filter). If your engine uses any of these, it will fit.
• Measure the filter opening: The main filter is roughly 4.5 inches in diameter and 1.5 inches tall. The pre-filter is slightly larger and foam. If your current filter looks similar in shape and size, it’s likely compatible.
• Not for all B&S engines: This is specific to older single-cylinder engines (e.g., 10–17.5 hp) with this round, dual-stage air cleaner housing. It will not fit newer Intek or OHV engines that use a different filter shape or a flat panel filter.
• Aftermarket vs OEM: This is an aftermarket replacement, not genuine Briggs & Stratton. It matches OEM dimensions and performance, but if you need a factory-stamped part (for warranty or strict fit), buy OEM.

Key Things to Know

• Quality is solid for the price: The 4.7-star rating from 1,500+ reviews indicates consistent fit and sealing. Users report it works as well as the OEM part.
• Installation is trivial: Remove the air cleaner cover, pull out the old foam pre-filter and paper cartridge, drop in the new ones, and reinstall the cover. No tools needed.
• Common gotcha – pre-filter orientation: The foam pre-filter has a flat side and a raised side. Install it with the raised side facing the paper filter. Reversing it can cause poor sealing and dirt bypass.
• Replace both parts together: The pre-filter catches large debris, the paper filter catches fine dust. Replacing only one reduces protection and can shorten engine life.

Should You Buy It

If you have a Briggs & Stratton engine that uses the listed OEM numbers and you want a reliable, low-cost replacement that matches the original fit and performance, this is a solid buy. It’s ideal for budget-conscious homeowners who maintain their own mower and don’t require a factory-branded part. For commercial use or strict warranty requirements, stick with genuine B&S.