[Lifetime Warranty] M154296 M158131 Mower Deck Belt - Compatible with 48" and 54" Decks John Deere Z425 Z435 Z445 EZtrak Zero-Turn Mowers | 152.3" x 0.5"
BlueStars M158131 mower deck belt for John Deere Z425 Z435 Z445 EZtrak mowers in retail packaging.
M158131 mower deck belt for John Deere Z425, Z435, and Z445 zero-turn mowers shown with a riding lawn mower.
M158131 mower deck belt specifications chart showing dimensions for John Deere Z425, Z435, and Z445 zero-turn mowers.
M158131 mower deck belt for John Deere Z425, Z435, and Z445 zero-turn mowers with 48-inch and 54-inch decks.
Infographic showing premium aramid mower deck belt features, construction, and material specifications.
Replacement mower deck belt for John Deere Z425 Z435 Z445 EZtrak mowers shown with common repair symptoms.
Informational graphic showing mower deck belt installation tips for John Deere Z425 Z435 Z445 EZtrak mowers.
Mower deck belt installation guide for John Deere Z425, Z435, and Z445 EZtrak zero-turn mowers.
Comparison chart showing BlueStars mower deck belt performance benefits versus standard belts for John Deere mowers.
BlueStars M158131 mower deck belt for John Deere Z425 Z435 Z445 EZtrak mowers in retail packaging.
M158131 mower deck belt for John Deere Z425, Z435, and Z445 zero-turn mowers shown with a riding lawn mower.
M158131 mower deck belt specifications chart showing dimensions for John Deere Z425, Z435, and Z445 zero-turn mowers.
M158131 mower deck belt for John Deere Z425, Z435, and Z445 zero-turn mowers with 48-inch and 54-inch decks.
Infographic showing premium aramid mower deck belt features, construction, and material specifications.
Replacement mower deck belt for John Deere Z425 Z435 Z445 EZtrak mowers shown with common repair symptoms.
Informational graphic showing mower deck belt installation tips for John Deere Z425 Z435 Z445 EZtrak mowers.
Mower deck belt installation guide for John Deere Z425, Z435, and Z445 EZtrak zero-turn mowers.
Comparison chart showing BlueStars mower deck belt performance benefits versus standard belts for John Deere mowers.
Lifetime Warranty

[Lifetime Warranty] M154296 M158131 Mower Deck Belt - Compatible with 48" and 54" Decks John Deere Z425 Z435 Z445 EZtrak Zero-Turn Mowers | 152.3" x 0.5"

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M154296 / M158131 Mower Deck Belt (152.3" x 0.5")

Key Features

  • Type: Mower Deck Belt
  • Dimensions: 152.3" (Length) x 0.5" (Width)
  • Construction Material: High-strength aramid cord for durability and resistance to stretching
  • Function: Transfers power from the engine pulley to the mower deck spindles to rotate the cutting blades

Replaces / Cross-Reference Part Numbers

  • M158131
  • M154296
  • 265-567
  • 13158
  • B1M158131

Compatibility & Fitment

  • Brand: John Deere
  • Mower Series: EZtrak, ZTrak Zero-Turn
  • Fits Models: Z425, Z435, Z445
  • Deck Sizes: 48 inch, 54 inch

When to Replace

  • Visible signs of wear such as cracking, fraying, or glazing on the belt surface
  • Belt slips during operation, resulting in inconsistent blade speed or poor cut quality
  • Noticeable stretching or loss of proper tension
  • Audible squealing or chirping from the deck area during engagement

Installation Tips

  • Before starting, disconnect the spark plug wire for safety
  • Consult the mower's operator manual for the specific belt routing diagram
  • Ensure all pulleys are clean, spin freely, and are correctly aligned
  • After installation, verify the belt is properly seated in all pulley grooves
  • Check for correct tension; the belt should not be too tight or too loose
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  • PART NUMBERS

    PART NUMBERS

    This Deck Belt replaces part numbers: John Deere M158131, M154296
  • SAVING SOLUTION

    SAVING SOLUTION

    Enjoy the great feeling when your mower is repaired and works like before - BlueStars brings DIY solutions to help you deal with any trouble
  • FIX MOWER'S SYMPTOMS

    FIX MOWER'S SYMPTOMS

    Uneven Grass Cutting, Loud or Unusual Noises, Excessive Vibration, Burning Smell, Slipping or Stalling Blades
  • IMPORTANT NOTE

    IMPORTANT NOTE

    This is a replacement part designed to be compatible with certain appliances. Any brand names mentioned are used solely to indicate compatibility.
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#1 SOURCE OF HIGH-QUALITY REPLACEMENT PARTS

Enjoy the comfort that our small yet mighty parts simplify your mowing experience
Brand Model Number
John Deere Z425 (PC9594)
John Deere Z435 (PC12590)
John Deere Z445 (PC9595) EZtrak Zero-Turn Mowers with 48" and 54" Decks

FAQ

This belt is associated with John Deere EZtrak zero-turn models Z425, Z435, and Z445. The strongest match in the available references is for 54-inch mower decks using belt part numbers M154296 or M158131. Because deck setups can vary, the safest way to confirm fit is to match your current belt number and mower deck model before ordering.
It replaces John Deere part numbers M154296 and M158131. Cross-referenced listings also associate this belt with A151 and 265-567.
Typical symptoms include the blades not engaging properly, weak or uneven cutting, belt squealing when the PTO is turned on, visible cracking or frayed edges, glazing or a shiny burned-looking belt surface, or the belt repeatedly jumping off the pulleys. If the belt has stretched, you may also notice poor blade speed even though the engine is running normally.
For most owners, this is a moderate repair. Expect about 30 to 60 minutes if the pulleys and belt guards are accessible and the routing is known. Common tools are a socket set or wrench set, pliers, and possibly a breaker bar or ratchet to release deck tension. Taking a photo of the original belt routing before removal helps prevent misrouting during installation.
Deck belts commonly fail from normal wear, heat buildup, blade impacts, seized or rough idler pulleys, bent belt keepers, and debris packed around the spindle housings. Running the mower with worn spindle bearings or a weak tensioner can also cause rapid belt glazing, stretching, or edge wear.
Inspect the spindle pulleys, idler pulleys, tensioner arm, and belt guides for wobble, sharp edges, or seized bearings. Clean grass buildup from the deck, verify the pulleys are aligned, and make sure the old belt did not fail because of a bad bearing or damaged keeper rod. Installing a new belt on a deck with a frozen idler or bent guide often leads to another early failure.