2 Pack 27987S Air Filter Foam Element Replace for B&S 27987 4108 5001H John Deere AM34963 LG27987 LG27987S Fits B&S 60500 61500 80500 81500 90102 130200 131200 140200

What It Is

This is a 2-pack of foam pre-filter elements designed to trap coarse debris before it reaches the main paper air filter on select Briggs & Stratton and John Deere lawn mower engines. It’s for residential mowers, tractors, and zero-turns with Vanguard or Intek single-cylinder engines in the 600–1400 series.

Fitment & Compatibility

• Direct OEM replacements for B&S 27987, 27987S, 4108, 5001H, John Deere AM34963, LG27987, and LG27987S.
• Engine series that use this element: B&S 60500, 61500, 80500, 81500, 90102, 130200, 131200, 140200.
• Common machines: John Deere D100, D110, D130, LA105, LA115; Troy-Bilt, Craftsman, Husqvarna, and MTD riders with compatible B&S engines.
• Check before buying: Measure your existing foam element – it should be roughly 4.5” x 2.5” x 1.5”. Confirm your engine model number (stamped on the valve cover or blower housing) matches one of the series above. This is a foam pre-filter, not a paper cartridge; it sits over the main filter.
• OEM vs aftermarket: This is an aftermarket 2-pack. Works identically to B&S 27987S but costs less.

Key Things to Know

• Quality: Dense, oil-resistant foam with consistent pore size. Holds up to washing and re-oiling multiple times. Users report it fits snugly without gaps.
• Installation: Slide over the paper filter and secure with the retaining clip or cover. No tools needed. Lightly coat with foam filter oil before first use (dry foam lets fine dust through).
• Gotcha: This is a pre-filter – you still need a clean main paper filter underneath. Replace both per your engine’s maintenance schedule (typically every 50 hours or annually).
• Common issue: If your mower runs with the foam element missing or clogged, you may see reduced power or engine wear. Check it after every 10 hours of mowing in dusty conditions.

Should You Buy It

Yes, if you own a B&S 600–1400 series engine or compatible John Deere model and want a cost-effective way to extend main filter life. The 2-pack gives you a spare for quick swaps. Avoid if you need the main paper filter (this is the foam pre-filter only) or if your engine uses a different foam shape.