593260 Air Filter 798452 798339 5432 5432k, 550ex 675exi 725exi Series Engines Model and More, Lawn Mower Air Filter Parts for Troy Bilt TB110 TB200 TB230 Lawnmower, 4 PACK

What It Is

This is a 4-pack of replacement air filters for small engines, primarily designed for Troy-Bilt and Craftsman lawn mowers with 550ex, 675exi, and 725exi series engines. It also fits other mowers using the equivalent OEM filters 593260, 798452, or 798339.

Fitment & Compatibility

• Check your engine model: This filter fits engines with the 550ex, 675exi, and 725exi series (often stamped on the engine shroud). It also works with models using OEM part numbers 593260, 798452, 798339, 5432, or 5432K.
• Mower model examples: Troy-Bilt TB110, TB200, TB230, and Craftsman models with the same engine series. Not for older or non-550/675/725 series engines.
• Measure before buying: The filter is about 3.5" x 2.5" x 1.5". Confirm your current filter dimensions match. This is a pre-filter (foam) and paper filter combo in one unit.
• Aftermarket note: This is a non-OEM part. While reviews are strong, it may not have the exact same foam density or paper pleat count as the original.

Key Things to Know

• Easy install: No tools needed. Just remove the air filter cover, swap the old filter, and snap the cover back on. Takes under 2 minutes.
• Change frequency: Replace every 25 hours of use or once per season, more often if mowing in dusty/dry conditions.
• Common gotcha: The foam pre-filter is attached to the paper element. Do not try to separate them—they’re designed as one piece. Also, never run the mower without a filter; debris will damage the engine.
• Quality note: Several users report the foam is slightly thinner than OEM. It works fine, but may clog faster in heavy dust. Clean the foam with compressed air between changes to extend life.

Should You Buy It

If you own a Troy-Bilt or Craftsman mower with a 550ex, 675exi, or 725exi engine and want a cost-effective, easy-to-install replacement filter pack, this is a solid pick. It’s best for routine seasonal maintenance, especially if you mow a typical suburban lawn. Avoid it if you need OEM-spec foam density for extreme dust conditions.