Rakiyada 2 PCS 491588S Air Filter with Pre Filter and Spark Plug Fits for B&S 491588 Craftsman 33644 Toro 20332, Lawn Mower Air Filter Parts for Honda Troy-Bilt John Deere Husqvarna

What It Is

This is a 2-pack air filter kit (including pre-filter and spark plug) designed for small engines, primarily used in lawn mowers, tractors, and zero-turn mowers. It replaces the OEM B&S 491588 filter and is compatible with many brands like Craftsman, Toro, Honda, Troy-Bilt, John Deere, and Husqvarna.

Fitment & Compatibility

• Check your engine model: This fits Briggs & Stratton engines with part number 491588 (and 498590 for pre-filter). It’s not universal—verify your engine’s air filter housing shape and size.
• Measurements: Filter dimensions are roughly 5.5 x 3.5 x 2 inches. Measure your old filter’s length, width, and thickness to confirm.
• OEM vs aftermarket: This is an aftermarket replacement. It matches OEM fitment for B&S 491588, but may not be identical to other brands’ OEM filters—compare the foam pre-filter thickness and spark plug thread length.
• Spark plug: Included spark plug (type RC12YC or equivalent) fits most B&S engines with 14mm thread and 3/4” reach. Check your engine’s gap requirement (usually 0.030”).

Key Things to Know

• Easy install: No tools needed for air filter swap—just open the housing, remove old filter, and snap in the new one. Spark plug requires a 5/8” socket.
• Pre-filter matters: The foam pre-filter catches larger debris. If your mower runs in dusty conditions, clean or replace it every 25 hours.
• Don’t skip the gap: The spark plug comes pre-gapped, but always verify with a feeler gauge. Wrong gap can cause misfires or hard starts.
• Durability: Users report good filtration and long service life for the price, but foam may degrade faster in humid climates.

Should You Buy It

If you need a quick, affordable replacement for a B&S 491588 air filter and spark plug, this two-pack is a solid value. It’s ideal for DIY maintenance on popular lawn tractors and mowers. Skip it if you require OEM-specific parts for a rare engine model or need a longer-lasting foam pre-filter for heavy commercial use.