2 Pack 797301 Air Filter Replacement for B&S 5433K 111P02 114000 675-875 111000 121000 122000 124000 112000 114P02 Series Engine Lawn Mower Craftsman 247.37031 engines 4249 5433 100955ST

What It Is

This is a 2-pack of replacement air filters (part #797301) designed for specific Briggs & Stratton engines used in Craftsman and other lawn mowers. It traps dirt and debris before they enter the engine, helping maintain performance and extend engine life.

Fitment & Compatibility

Check your engine model number – this filter fits B&S engines 5433K, 111P02, 114000, 675-875, 111000, 121000, 122000, 124000, 112000, and 114P02 series. It also fits Craftsman 247.37031 engines and models 4249, 5433, 100955ST.

Confirm your current filter size – measure the old filter. This replacement is approximately 3.5 x 2.5 x 1.5 inches. If your filter is significantly larger or smaller, it won’t seal properly.

OEM vs aftermarket – this is an aftermarket replacement, not genuine Briggs & Stratton. It meets OEM specifications for fit and function, but some users report slightly thinner foam. It works fine for most residential mowing.

Double-check your deck size – this filter is engine-specific, not deck-specific. It works on any mower with the compatible B&S engine listed above, regardless of deck width.

Key Things to Know

• Installation is simple – remove the old filter, clean the housing with a rag, and press the new filter in place. No tools needed. Takes under 2 minutes.
• Foam vs paper – this is a foam filter. It can be washed and reused a few times, but replacement is cheap enough that most users just swap it.
• Common gotcha – some users report the foam is slightly less dense than OEM. If you mow in very dusty or sandy conditions, consider a genuine B&S filter for better dust trapping.
• Check your engine model twice – the compatibility list is long but specific. If your engine model isn’t listed, measure your old filter against the dimensions above before buying.

Should You Buy It

Yes, if you have one of the listed B&S engines and want a budget-friendly, easy-to-install air filter for regular residential mowing. The 2-pack is a good value at $8.99. Skip it if you mow in extreme dust or sand, or if you prefer OEM parts for peace of mind.