YTH22V46 YTH18542 YTH24V48 Tune Up Kit for Husqvarna YTA18542 YTA22V46 YTA24V48 YTH2348 YTH24V54 Z246 Z254 Mower w/ 17.5hp 19.5hp 20hp 21hp B&S Engine

What It Is

This tune-up kit bundles a spark plug, air filter, and fuel filter for Husqvarna lawn tractors and zero-turn mowers with 17.5hp to 21hp Briggs & Stratton single-cylinder engines. It’s designed for routine annual maintenance to restore starting reliability and engine performance.

Fitment & Compatibility

• Models confirmed to fit: YTH22V46, YTH18542, YTH24V48, YTA18542, YTA22V46, YTA24V48, YTH2348, YTH24V54, Z246, Z254.
• Engine requirement: Only for Briggs & Stratton 17.5hp, 19.5hp, 20hp, or 21hp single-cylinder engines (typically 500cc or 540cc). Not compatible with Kohler, Kawasaki, or twin-cylinder Briggs engines.
• Check your engine model number: Look at the valve cover or blower housing for a stamped number (e.g., 31C707, 31P977). If it’s not a single-cylinder Briggs, this kit won’t fit.
• Deck size irrelevant: The kit fits the engine, not the deck—verify engine, not mower model name alone.
• Aftermarket quality: This is a non-OEM kit. Parts match OEM dimensions but use generic filters and plugs.

Key Things to Know

• Easy install, 15–20 minutes: No special tools beyond a socket wrench and screwdriver. Fuel filter requires disconnecting the fuel line—expect a little spill.
• Spark plug gap not pre-set: Check and gap the included plug to 0.030 inches before installing. Many users report it’s gapped wrong out of the box.
• Air filter may be slightly different: Some users note the foam pre-filter is thinner than OEM—still works but may need replacement sooner in dusty conditions.
• Fuel filter orientation matters: Arrow on the filter must point toward the carburetor. Installing backward can cause poor performance or stalling.

Should You Buy It

If you have a compatible single-cylinder Briggs & Stratton Husqvarna and want a cheap, quick tune-up without hunting down individual parts, this kit delivers solid value. It’s not for heavy-duty commercial use or engines outside the listed specs, but for a homeowner doing annual maintenance, it’s a reliable, budget-friendly choice.