[Lifetime Warranty] M154960 Secondary Deck Belt - Compatible with 54” Mower Decks John Deere, Lawn Tractors - 120.6" x 5/8"

M154960 Secondary Deck Belt for John Deere 54” Mower Decks

This secondary deck belt is designed for John Deere lawn tractors equipped with 54-inch mower decks. Built with premium materials, it delivers reliable power transmission, durability, and smooth cutting performance.

Important Note Before Purchase

Please carefully verify your mower model and belt measurements before ordering to ensure proper fit.

• Belt Application: Mower Deck
• Belt Type: Covered
• Outer Length: 120.6 inches
• Top Width: 5/8 inch
• Bottom Width: 0.4 inch
• Height: 0.37 inch

Compatible Models

Replaces John Deere part numbers M154960 and M143923.

Compatible with multiple John Deere lawn tractor models, including: GX255, GX325, GX335, GX345, GX355, LX280, X320, X340, X360, X500, X520, X530, X534, X540, and X590, when equipped with 54-inch mower decks.

Superior Quality & Performance

The M154960 mower deck belt offers up to 120% better performance compared to standard belts. It delivers extended fatigue life (up to 120 hours) and increased bonding strength (2.64 kN/m).

Constructed from thick chloroprene rubber and reinforced with strong aramid fiber cords, the belt is wrapped in a durable two-layer fabric coating. This design provides excellent resistance to heat, oil, and wear while ensuring strong adhesion to mower pulleys and minimizing belt slippage.

Efficient Power Transmission

This deck belt transfers power from the engine to the mower blades, enabling smooth blade rotation and consistent cutting performance.

Replace the belt if you notice signs such as cracks, rolling or flipping, sidewall damage, or burned or glazed belt surfaces.

Lifetime Protection

Enjoy peace of mind with our lifetime protection guarantee. Your deck belt is fully covered against defects or performance issues, ensuring dependable use for years to come.