M154621 Mower Belt, 42" John Deere X300 X304 X310, 48" EZtrak, 146.24"

[Grip120] M154621 Mower Belt | 146.24"

Key Features

• Type: Deck Drive V-Belt
• Dimensions (W x L): 1/2 in x 146.24 in (12.7 mm x 3714.6 mm)
• Material: Aramid cord construction for high tensile strength and resistance to stretching
• Design: High-traction surface for reliable power transmission to mower blades
• Construction: Oil and heat-resistant synthetic rubber compound for extended service life

Replaces / Cross-Reference Part Numbers

• M154621
• 265-316
• 75-803
• 175-803
• 12560
• 230-0316
• 7-078299
• 504-00326
• 810-CBL2387T
• B1JD173

Compatibility & Fitment

• John Deere Lawn Tractors with 42-inch Decks:
• X300
• X304
• X310
• John Deere Zero-Turn Mowers with 48-inch Decks:
• EZtrak Series Z245

When to Replace

• Visible signs of wear such as cracking, fraying, glazing, or deep abrasions
• Audible squealing or slipping during deck engagement or operation
• Noticeable decrease in blade speed or cutting performance
• Belt appears loose, stretched, or fails to maintain proper tension

Installation Tips

• Before installation, disconnect the spark plug wire and set the parking brake for safety.
• Consult the owner's manual for the specific belt routing diagram for your model.
• Inspect all pulleys and tensioners for wear, damage, or debris before installing the new belt.
• Ensure the belt is correctly seated in each pulley groove and that proper tension is applied.