John Deere 3Pk 54" Deck Medium Lift Blades M115496 325 335 345 355D G100 S2554 F725 F735 GS25 Mowers Tractors

What It Is

This is a set of three medium-lift blades designed for John Deere 54-inch decks. They are intended for mulching and side-discharge mowing on residential and light-commercial tractors.

Fitment & Compatibility

Before buying, confirm your deck is exactly 54 inches (not 48 or 60). These blades fit John Deere models including 325, 335, 345, 355D, G100, S2554, F725, F735, GS25, and several others with the 54" deck. They are OEM replacements for part numbers M115496, M155616, and M161989. Measure your current blade length (should be ~21 inches) and center hole diameter (1 inch). Check that your spindle bolt pattern matches—these use a 5-point star center hole. Verify the blade thickness (0.203 inches) matches your deck’s spindle clearance. If you have an aftermarket deck or non-John Deere mower, these likely won’t fit.

Key Things to Know

• Quality: Made from heat-treated steel with a hardened edge. They hold an edge longer than cheap stamped blades, but aren’t as thick as heavy-duty “gator” blades.
• Installation: Easy if you have a socket wrench and a block of wood to jam the blade. Torque spindle bolts to 70-90 ft-lbs—don’t overtighten or strip the threads.
• Lift type: Medium lift is a good all-around choice. Low lift is better for sandy soil (less dust), high lift for bagging. These won’t bag as well as dedicated high-lift blades.
• Common gotcha: The star center hole can be tight on some aftermarket spindles. File the hole slightly if needed, but don’t enlarge it—balance matters.

Should You Buy It

Buy these if you have a John Deere with a 54" deck and want a reliable OEM replacement for standard mulching or side-discharge mowing. They’re a solid value for the price, especially if you mow weekly and don’t need aggressive bagging performance. Skip them if you run a non-Deere mower or need heavy-duty blades for rocky or rough terrain.