Z335E Z355E Air Filter Oil Filter Tune Up Kit for John Deer Z345M Z345R Z355R Z225 Z355E E120 Z235 Z335 Z345 Z355 LT150 46'' 48'' Mower w/ 17.5hp 19.5hp 20hp 21hp Engine

What It Is

This is a complete tune-up kit for John Deere lawn tractors and zero-turn mowers with 17.5hp to 21hp single-cylinder engines. It includes an air filter, oil filter, and spark plug—everything needed for a basic annual service to keep the engine running smoothly.

Fitment & Compatibility

Before buying, confirm your mower’s model and engine size. This kit fits John Deere models Z225, Z235, Z335E, Z345M, Z345R, Z355E, Z355R, E120, and LT150 with 46" or 48" decks. It is designed for engines with 17.5hp, 19.5hp, 20hp, or 21hp—typically Briggs & Stratton or Kawasaki single-cylinder engines. Check your owner’s manual for exact part numbers: the air filter replaces OEM AM141621, the oil filter replaces AM125424 (or equivalent), and the spark plug is a standard RC12YC. Measure your existing filter dimensions if unsure—this kit will not fit twin-cylinder or larger engines.

Key Things to Know

• Quality vs OEM: These are aftermarket parts. They work well for basic maintenance, but some users report the air filter foam is thinner than OEM. Inspect the seal before installing.
• Installation difficulty: Easy—just remove the old filters and plug, install the new ones. No special tools needed beyond a socket wrench for the plug and pliers for the oil filter.
• Gotcha: The spark plug gap may need adjustment (0.030")—it’s not always pre-set. Check with a feeler gauge before installing.
• Oil capacity: Use SAE 30 or 10W-30 oil (not included). Change oil first, then replace the filter.

Should You Buy It

Buy this if you own one of the listed John Deere models and want a convenient, budget-friendly tune-up kit for annual maintenance. It’s a solid value for the price, but if you need exact OEM fit and durability (e.g., for commercial use), stick with genuine John Deere filters. For home owners with a single mower, this kit is a no-brainer.