POSEAGLE 756-04129b Idler Pulley – 4.84 in OD, Replaces 956-04129b for Cub Cadet 42/50 in Decks

Overview

Refresh your mower deck with the POSEAGLE 756-04129b idler pulley. This part is precision-manufactured to match original specifications, delivering a reliable replacement that fits a wide range of Cub Cadet, Troy-Bilt, Craftsman, and other compatible lawn tractors. Expect a straightforward install and a component you can rely on during regular mowing sessions, from tidy suburban lawns to rugged backyard terrain.

Built to endure challenging mowing conditions, this pulley integrates a robust steel body, designed to resist wear, corrosion, and impact. The result is a deck component that stays in alignment, supports smoother belt operation, and reduces the chance of belt fraying or slippage over time. While results can vary with usage, users may notice steadier belt performance and less frequent adjustments when paired with the correct hardware and a proper installation.

Key specifications

• Outer diameter: 4.84 inches
• Flat outer diameter: 4.25 inches
• Inner diameter: 0.38 inches
• Height: 1 inch

What’s included

• 1x 3/8 inch (16) x 1-3/4 inch hex bolts
• 1x 3/8 inch flat washer
• 1x 3/8 inch-16 flanged nylon lock nuts

Performance and fitment

Engineered to minimize vibration and belt wear, this pulley aims to support smooth operation across a variety of mower decks. Its heavy-duty steel construction offers durability for wet grass, uneven terrain, brush, and other demanding mowing environments. The design is precision-machined to align with original deck systems, helping maintain proper belt tension and drive alignment.

Fitment spans Cub Cadet 42 to 54 inch decks and includes models in the CC, LT, LGT, RZT, and SLT lines, alongside Columbia MTD, Troy-Bilt, Murray, Craftsman, and White Outdoor decks in related series. Always verify part numbers and deck size to confirm compatibility with your specific mower and model family.