M154958 48 Inch Deck Belt for John Deere GT235 GX345 X300 X320 X500 X590 GT275 LX280 320 345 325 335 180 245 265 48" Lawn Mower Belt fit for M110313 954-04055 754-04055 / Aramid Cord / 5/8" x 111.25"

What It Is

The M154958 is a 48-inch deck belt designed for a wide range of John Deere lawn tractors and zero-turn mowers. It drives the mower blades on 48-inch cutting decks, replacing OEM part numbers M110313, 954-04055, and 754-04055.

Fitment & Compatibility

Before buying, verify three things:

• Deck size: This belt is for 48-inch decks only. Do not use on 42-inch or 54-inch decks.
• Model list: Fits John Deere GT235, GX345, X300, X320, X500, X590, GT275, LX280, 320, 345, 325, 335, 180, 245, 265. Also fits some older models—check your manual.
• Measurements: Belt is 5/8" wide by 111.25" long. Measure your old belt’s length and width to confirm. Aftermarket (not OEM), but matches OEM specs.

Key Things to Know

• Aramid cord construction: Stronger than standard rubber belts, resists stretching and heat better—good for heavy grass or frequent use.
• Installation difficulty: Moderate. You’ll need to remove the deck or at least the belt guard. A belt routing diagram (or photo of old belt) is helpful.
• Common gotcha: Some users report it runs slightly tighter than OEM. If your deck pulleys are worn or misaligned, it may squeak or wear faster. Check pulley condition first.
• Price/value: At ~$21, it’s about half the cost of an OEM belt. Reviews (4.3/5) note good lifespan for the price.

Should You Buy It

If you have a compatible 48-inch John Deere and want a reliable, budget-friendly replacement, this belt is a solid choice. Avoid it if you prefer OEM-only parts or if your pulleys are worn—then invest in OEM for tighter tolerances. For most DIY homeowners, the M154958 offers great value and performance.