M118684, M143019 Mower Deck Belt | Fits 48" & 52" Deck J-Deere LX255, LX277, LX279, LX288 & More | 64"

M118684, M143019 Mower Deck Belt | 64"

Key Features

• Durable construction designed for high-torque mower deck applications.
• Cogged profile allows for increased flexibility and heat dissipation.
• Oil and abrasion-resistant outer cover for extended service life.
• Precision dimensions to ensure consistent blade tip speed and power transfer.
• Specifications: 5/8" width x 64" outer circumference.

Replaces / Cross-Reference Part Numbers

• M118684
• M143019
• M144677
• 265-242
• 75-300
• 175-300
• 810-CBL2487T

Compatibility & Fitment

• John Deere LX Series: LX255, LX277, LX279, LX288, LX277AWS, LX280, LX289
• John Deere GT Series: GT242, GT262, GT275
• Applicable Deck Sizes: 42C, 48-inch, and 52-inch mower decks.

When to Replace

• Visible signs of fraying, cracking, or splitting along the belt edges or inner cogs.
• Loss of tension resulting in blade slippage or inconsistent grass cutting.
• Excessive stretching that prevents the tensioning system from maintaining firm contact.
• Evidence of glazing (shiny or smooth surface) caused by chronic belt slippage.

Installation Tips

• Disconnect the spark plug wire before beginning installation to ensure the engine cannot start.
• Engage the parking brake and lower the mower deck to the lowest position for easier access.
• Remove deck covers to clear debris from pulleys before routing the new belt.
• Follow the routing diagram located on the mower deck decal to ensure correct pulley engagement.
• Verify that the belt is properly seated in all pulley grooves before tensioning the spring-loaded idler arm.