OEM Replacement for Briggs & Stratton 798897 Air Filter- Heavy-Duty, Durable

What It Is

This is the OEM replacement air filter (part number 798897) for Briggs & Stratton engines, designed for heavy-duty use in lawn tractors, zero-turn mowers, and commercial-grade walk-behinds. It traps dirt and debris before they reach the carburetor, ensuring clean airflow for reliable starting and engine life.

Fitment & Compatibility

Check your engine model number (stamped on the valve cover or blower housing) against Briggs & Stratton’s compatibility list. This filter fits many Intek, Endurance, and Vanguard engines (e.g., series 31, 33, 40, 44) common in 42–54-inch deck mowers. Measure the filter housing—this unit is roughly 7.5 x 5.5 x 2 inches. OEM guarantees exact fit for listed engines; aftermarket knockoffs may be slightly smaller and leak. Verify your mower brand (Troy-Bilt, Cub Cadet, John Deere, etc.) accepts the 798897—cross-reference with your owner’s manual or existing filter number.

Key Things to Know

• Quality: OEM foam and paper construction resists oil saturation and clogging better than cheap aftermarket filters. Rated for 100–200 hours of use, depending on dust exposure.
• Installation: Tool-free—pop the old filter out, clean the housing with a rag, press the new one in. Ensure the foam pre-cleaner (if present) is properly seated.
• Common Gotcha: Some mowers use a separate pre-cleaner foam sleeve (sold separately). Don’t skip it if your engine came with one—it extends filter life 2x.
• Check for Damage: Inspect the housing gasket and clips; a worn housing negates a new filter’s sealing.

Should You Buy It

Buy this if you have a Briggs & Stratton engine listed for the 798897 and want the exact fit and filtration that matches the original part. It’s ideal for owners who mow in dusty conditions or want maximum engine protection. If your engine is off-brand or you’re on a tight budget, a $8 aftermarket filter might work—but expect shorter life and possibly a loose seal. For peace of mind and durability, OEM is the right call.