Two Pack Idler Pulley Kit 4.25 Inch Drop In Replacement For Cub Cadet RZT 50 LTX 1040 LT1045 LTX 1050 Decks Replaces 753-08171 756-04129B 956-04129 753-08068 MTD Troy Bilt Oregon Compatible
✔️ OD 4.85in/123mm, flat OD 4.25in/108mm, bore 3/8in
This idler pulley kit is a direct drop-in replacement designed for Cub Cadet RZT 50 decks and compatible models from MTD, Troy-Bilt, and Oregon. It restores smooth belt tracking and deck performance with a durable, double-sealed bearing system.
✅ Pack of 2 idler pulleys for quick deck service
✅ Outer diameter 4.85 in (123 mm) for solid drive alignment
✅ Flat OD 4.25 in (108 mm) with 1.1 in height (28 mm)
✅ Bore 3/8 in (9.5 mm); hardware kit included: 3/8-16 x 1-3/4 in bolts, flat washer, flanged nylon lock nut
✅ Double-sealed bearing for low maintenance and longer life
💡 What is a pillow block bearing used for in lawn mower deck idler systems?
It's a handy mounting solution that keeps shafts aligned under load, reducing wear and belt misalignment.
- Provides stable support for rotating shafts in drive systems- Helps maintain belt tracking and efficiency on lawn equipment
- Uses a sealed ball bearing arrangement for outdoor durability
- Common across Cub Cadet, MTD, Troy-Bilt, and Oregon mower decks
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