Air Filters Replace Compatible with 796031 (591334 or 594201) Plus 797704 Foam Pre-cleaner (Pack of 2)

What It Is

This is a pack of two air filters (replaces OEM 796031, 591334, or 594201) plus two foam pre-cleaners (replaces 797704) for small engines on lawn mowers, tractors, and zero-turns. The pre-cleaner traps larger debris before it reaches the paper filter, extending service life in dusty or dry conditions.

Fitment & Compatibility

Before buying, confirm your engine’s air filter housing shape and dimensions. These fit many Briggs & Stratton, Craftsman, MTD, and Troy-Bilt engines with a rectangular paper filter (roughly 5.5” x 3.5” x 1.5”). Common compatible models include 500e, 550e, 625e, 650e, 675, 700, 725, 775, and 800 series. Also fits some Kawasaki and Kohler engines using the same filter base.

Check your current filter’s part number—if it’s 796031, 591334, or 594201, this is a direct replacement. The foam pre-cleaner (797704) slips over the paper filter; if your housing doesn’t have a pre-cleaner slot, you may need to trim or skip it. Measure your filter opening (width, height, depth) to ensure a snug fit—too loose lets unfiltered air in, too tight can warp the housing.

Key Things to Know

• Quality vs. OEM: These aftermarket filters are dense and seal well, but the foam pre-cleaner is slightly thinner than OEM. For heavy dust, consider replacing pre-cleaners more often.
• Installation: Easy—remove the housing cover, lift out the old filter, wipe debris from the housing, insert the new paper filter (foam side up if pre-cleaner included), and reinstall. No tools needed.
• Common gotcha: The pre-cleaner must be oiled before use (apply a few drops of air filter oil or engine oil, squeeze out excess). Running it dry reduces filtration.
• Service interval: Replace paper filter every 25–50 hours or yearly; clean/oil pre-cleaner every 10–25 hours in dusty conditions.

Should You Buy It

If you have a compatible small engine and want affordable, reliable air filtration with the added dust protection of a pre-cleaner, this pack is a solid value. It’s especially good for mowers used in dry, dusty yards where pre-cleaners extend filter life. Not ideal if you need exact OEM appearance or have an odd-sized housing—measure first.