PUL8615 – Deck Flat Idler Pulley Kit (GA Spares / Aftermarket Option)

✅ Compatible With

• Fits various Hustler and BigDog zero-turn mowers

• Used on cutting decks sized: 48", 52", 54", and 60"

• Suitable for mower models with deck idler pulley systems requiring OEM kit replacement

• Ideal for restoring belt routing and tension in high-vibration, commercial mowing conditions

🔁 Replaces OEM Part Numbers

Hustler:

• 126124 (kit)

• 604231 (pulley)

• 607479 (pulley)

• 605508 (washer)

BigDog:

• 126124 (kit)

• 604231 (pulley)

• 607479 (pulley)

• 605508 (washer)

🔧 Kit Contents & Specifications

• Included:

  • 1 × Flat idler pulley

  • 1 × Washer

• Pulley Diameter (OD): 5.758" (146.25 mm)

• Pulley Bore (ID): 0.500" (12.7 mm)

• Pulley Height: 1.324" (33.63 mm)

• Pulley Dimension B: 4.842" (123 mm)

• Pulley Wall Thickness (T): 0.079" (2 mm)

🔍 Product Use

This deck idler pulley kit replaces worn or damaged pulley assemblies on Hustler and BigDog mowers. The pulley keeps deck belts properly routed and tensioned, ensuring efficient blade drive and reducing wear or slippage during operation.

⭐ Features & Benefits

• ✅ Complete Replacement Kit – Pulley and washer included for a proper refit

• ✅ OEM Cross-Compatible – Replaces several Hustler and BigDog part numbers

• ✅ Durable Construction – High-quality steel build for long service life

• ✅ Smooth Operation – Restores consistent belt tracking and tension

• ✅ Fast Installation – Simple bolt-on fitment with no modifications

⚠️ Installation Tips

• Inspect the old pulley and idler bracket for signs of wear

• Clean mounting surfaces before installation

• Ensure pulley spins freely and is level with surrounding pulleys

• Torque mounting hardware correctly

• After installation, run the mower deck to check alignment and belt tracking

📦 What’s Included

• 1 × Flat Idler Pulley (PUL8615)

• 1 × Flat Washer