John Deere Original Equipment Model LX255 Maintenance Kit + Mulching Blades

What It Is

This is a John Deere Original Equipment maintenance kit for the LX255 lawn tractor, combining the essential service items (oil filter, air filter, spark plug, fuel stabilizer) with a set of mulching blades designed for the 42-inch mower deck. It’s intended for seasonal tune-ups and switching from bagging/side-discharge to mulching.

Fitment & Compatibility

• Deck size: Fits only the 42-inch (Mower Deck) on the LX255. Do not use on 38-inch or 48-inch decks.
• Model check: Confirmed for John Deere LX255, LX266, LX277, LX279, LX280, LX288. If you have an LX series with a different number, measure your deck width first.
• OEM vs aftermarket: This is genuine John Deere kit (parts: AM137395 for blades, AM125424 for filter kit). Aftermarket blades may not match the mulching ramp profile or balance.
• Measurement: Mulching blades are 21 inches long, 2.5 inches wide, with a 1-inch center hole and 5/8-inch spindle bolt. Verify your existing blade length before buying.

Key Things to Know

• Installation difficulty: Moderate – requires removing the deck or tilting the mower. You’ll need a torque wrench (specs: 40–50 ft-lbs for blade bolts). No special tools for the filter kit.
• Mulching performance: The blades have a higher lift and sharper cutting edge than standard blades. They work best in dry grass; wet or tall grass may clog the deck.
• Kit completeness: Includes everything for a full tune-up except engine oil. The fuel stabilizer is a small bottle – good for one season.
• Gotcha: The mulching blades are not sharpened out of the box; they are “service sharp” for initial use. Resharpen after 25 hours of mowing.

Should You Buy It

Buy this kit if you own a John Deere LX255 with the 42-inch deck and want a one-stop OEM solution for both a tune-up and converting to mulching. It’s ideal for owners who prefer guaranteed fit and performance over cheaper aftermarket alternatives. Skip it if you only need blades (the kit costs more than blades alone) or if you have a different deck size.