593260 Air Filter Spark Plug for Troy-Bilt TB110 TB115 TB200 TB230 TB330 TB370 Walk Behind Lawn Mower

What It Is

This is a combo air filter and spark plug set (part number 593260) designed for Troy-Bilt TB110, TB115, TB200, TB230, TB330, and TB370 walk-behind lawn mowers. It replaces the engine’s air filter and spark plug to maintain proper airflow and ignition for reliable starting and efficient cutting.

Fitment & Compatibility

• Check your model number: This kit fits the listed TB-series mowers, but verify your exact model number (e.g., TB110, TB230) on the mower’s deck or under the seat. It does not fit push mowers with Briggs & Stratton or Honda engines unless they share the same Troy-Bilt engine (usually a 140cc–190cc Troy-Bilt branded engine).
• OEM vs aftermarket: This is an OEM Troy-Bilt replacement part, so it matches the original specs exactly. Aftermarket “fits Troy-Bilt” kits may vary in filter density or spark plug gap.
• Measurements: Air filter is a standard rectangular foam/paper element (approx. 4.5” x 3.5”). Spark plug is a standard 14mm thread, 3/4” reach, with a 5/8” hex. Gap is pre-set to 0.030” (check with a gap tool before installing).
• Deck size: Works with 20–22 inch decks on these models. Not for zero-turn or riding mowers.

Key Things to Know

• Installation is easy: No tools needed for the air filter (just a screw or clip), but use a spark plug wrench (5/8” socket) for the plug. Hand-tighten then 1/2 turn with the wrench.
• Check the plug gap: Even though pre-gapped, verify it’s 0.030” with a feeler gauge. A wrong gap can cause misfires or hard starting.
• Replace both together: The kit is designed as a pair—replace both at the same time (usually every 25–50 hours or once per season). Running a dirty filter or old plug separately reduces performance.
• Common gotcha: The air filter fits snugly—don’t force it. If it seems too tight, double-check your model number. Some TB230s use a different filter (part 753-04421).

Should You Buy It

Yes, if you own a Troy-Bilt TB110–TB370 walk-behind mower and want a hassle-free, OEM-fit maintenance kit. At $11.99, it’s a fair price for both parts and saves hunting separately. Skip it if you have a different brand engine or a non-listed model—fitment is model-specific.