594106 Air Filter and Filter Cover replaces For Briggs & Stratton 595661 798452 595658 Lawn Mower Replacement Parts

What It Is

This is an air filter and cover set for Briggs & Stratton engines, typically found on push mowers, riding mowers, and some small generators. It replaces OEM part numbers 595661, 798452, and 595658, serving as a direct drop-in replacement for the factory air filtration system.

Fitment & Compatibility

• Check your engine model: This fits most Briggs & Stratton engines with a plastic air filter housing and a rectangular foam filter. Common engines include the 500e, 550e, 600e, and 625e series, plus some older cast-iron sleeve engines.
• Measure your old filter: The filter itself is roughly 4.5" x 3.5" x 1.5". The cover is about 5" x 4". If your current filter is a different shape (round, cylindrical, or much smaller), this won’t fit.
• OEM cross-reference: Directly replaces Briggs & Stratton 595661, 798452, and 595658. If your mower uses any of those numbers on the old filter or cover, this is the correct part.
• Not universal: Does not fit Kohler, Honda, Kawasaki, or Tecumseh engines. Verify your engine brand before buying.

Key Things to Know

• Quality is decent for the price: The foam filter is slightly less dense than OEM, but works fine for typical residential mowing. Expect to replace it every season or two.
• Easy install, no tools needed: The cover snaps on/off by hand. Just remove the old filter, clean the housing, drop in the new filter, and snap the cover back on.
• Common gotcha: The plastic cover tabs can be brittle. Remove the old cover carefully to avoid breaking them. If the cover doesn’t snap flush, double-check the filter orientation—it’s directional.
• Avoid over-oiling: If you oil the foam filter (some models require it), use only a light coat. Excess oil can gum up the carburetor.

Should You Buy It

If you have a compatible Briggs & Stratton engine and want a budget-friendly replacement that works as well as OEM for normal use, this is a solid pick. It’s not for heavy commercial use or high-dust environments, but for the average homeowner mowing a 1/4-acre lawn, it’s a reliable, no-hassle option at half the price of the genuine part.