2 Pack 792105 Air Filter Replace for BS 276890, 4233, 5405, 5405H, 5405K, 593240, 798748 OEM Air Cleaner Cartridge with 792303 Pre Filter Fits Lawn Mower Air Cleaner Element

What It Is

This is a 2-pack replacement air filter set (part 792105) with a separate foam pre-filter (792303) designed for small engines on lawn mowers, tractors, and generators. It replaces multiple OEM Briggs & Stratton numbers and is intended for routine air intake maintenance to keep debris out of the carburetor.

Fitment & Compatibility

Before buying, confirm your engine’s air filter housing shape and dimensions. This filter fits Briggs & Stratton engines using OEM numbers 276890, 4233, 5405, 5405H, 5405K, 593240, and 798748. Common applications include push mowers, riding mowers, and pressure washers with 3.5–6.5 HP engines. Measure your existing filter: the paper element is roughly 4.5 x 3.5 x 1.5 inches (check your manual). Not all “fits” claims are exact—verify your model’s air filter housing isn’t a different shape (e.g., round vs. rectangular). Avoid assuming compatibility based on brand alone; cross-reference your engine’s model number (e.g., 10T502) on the valve cover or blower housing.

Key Things to Know

• Quality vs. OEM: This aftermarket set is priced low ($10.99 for two paper filters plus two foam pre-filters). It’s functional but may have slightly thinner foam or paper than genuine Briggs parts—fine for residential use, less so for heavy commercial duty.
• Installation is simple: No tools needed. Remove the old filter, clean the housing, slide in the new paper filter, then wrap the foam pre-filter over it. Ensure the foam is fully seated to avoid unfiltered air leaks.
• Pre-filter matters: The foam pre-filter catches larger debris first, extending paper filter life. Replace both together every 25–50 hours or annually, more often in dusty conditions.
• Common gotcha: The foam pre-filter can shrink or tear if washed aggressively. Hand-wash in mild soap, air-dry, and lightly oil it for better dust capture (use foam filter oil, not engine oil).

Should You Buy It

Buy this if you need a budget-friendly, ready-to-use replacement for a common Briggs & Stratton engine and don’t mind slightly lower build quality than OEM. It’s ideal for homeowners with a single mower or occasional small-engine use. Skip it if you run a commercial fleet or need maximum filtration for heavy dust—stick with genuine Briggs filters in that case.