539114557 Lawn Mower 52" & 54" Deck Belt 5/8"x154" for Husqvarna LSZ4622, LSZ5422, LSZ5424, MZ5225, RZ4219, RZ4619, RZ4620, RZ5422 and RZ5424, Exmark 1-653368 653368 116-3455

What It Is

This is a 5/8" x 154" deck drive belt designed for 52-inch and 54-inch zero-turn mowers from Husqvarna and Exmark. It powers the blades on commercial and residential models like the LSZ, MZ, RZ, and select Exmark Lazer Z series.

Fitment & Compatibility

Before buying, verify your mower’s deck size (52" or 54") and model number. This belt fits:

• Husqvarna: LSZ4622, LSZ5422, LSZ5424, MZ5225, RZ4219, RZ4619, RZ4620, RZ5422, RZ5424
• Exmark: Replaces OEM part numbers 1-653368, 653368, and 116-3455

Measure your old belt’s length (154 inches) and width (5/8 inch) to confirm. This is an aftermarket belt, not OEM Husqvarna, so check your deck’s belt routing diagram—some decks require a specific groove profile. Not compatible with 48-inch or 60-inch decks.

Key Things to Know

• Quality: Aftermarket belt; may wear slightly faster than genuine OEM, but adequate for homeowner use. Inspect pulleys for wear before installing.
• Installation difficulty: Moderate—requires removing the deck or accessing under the mower. Have a diagram handy; improper routing causes slipping or premature failure.
• Common gotcha: The 154-inch length is critical. A belt that’s even 1/2 inch off will not tension correctly. Measure your old belt with a tape, don’t guess.
• Lubrication: Do not apply belt dressing; it degrades rubber and voids any warranty. Ensure pulleys spin freely.

Should You Buy It

Buy this if you own a compatible 52" or 54" Husqvarna or Exmark ZT and want a budget-friendly replacement for light to moderate use. For heavy commercial mowing, spring for the OEM belt—it’ll hold up longer under constant load.