UDC Parts idler pulley front view with compact profile for smooth operation
UDC Parts idler pulley outer diameter 3-7/8 inches ensuring alignment
UDC Parts idler pulley inner diameter 3/8 inch for secure belt fit
UDC Parts idler pulley height 1-1/8 inch reduces clearance issues
UDC Parts idler pulley Husqvarna compatible for reliable replacement
UDC Parts idler pulley Craftsman Poulan compatible for easy lawn care
UDC Parts idler pulley engineered to reduce friction and extend life

UDC Parts

UDC Parts 173437 Idler Pulley Replacement for Husqvarna, Poulan, Craftsman — 42-44 inch Deck

High-performance patio lawn and garden made for confident daily results

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Why customers choose Cera Garden

Reliable replacement for a smooth deck operation

Meet the UDC Parts 173437 idler pulley, a versatile replacement designed to fit a broad range of lawn-tractor belts. Rather than repeating OEM numbers verbatim, this description focuses on the practical fit across Husqvarna, Poulan, Craftsman, and AYP lines, helping your mower maintain a steady rhythm through routine maintenance.

When the pulley matches the belt track of your deck, you can expect smoother belt movement and less downtime during blade-to-belt adjustments, tension checks, and seasonal tune-ups. The design aims to integrate with your existing belt path, supporting consistent operation without guesswork.

Key compatibility and part numbers

  • Replaces OEM parts from Husqvarna, Poulan, Craftsman, and AYP including 173437, 131494, 165888, 532104360, 532131494, 155191104360X, 532173437, and 532165888
  • Compatible with Craftsman LT1000 and LT2000 (models 917.287050, 917.288070)
  • Compatible with Husqvarna LT16542, LT18452, LTH1342, LTH1542, LTH1742, LTH18542, LTH2042, YTH130, YTH1342XP, YTH1542, YTH1842, YTH1848, YTH18542, YTH2042, YTH2048, YTH2242, YTKH1542XP, LTH1342B, LTH1342C
  • Additional Husqvarna compatibility includes YTH1342XPA, YTH1542A, YTH1542B, YTH1542C, YTH1542D, YTH1542E, YTH1542XP, YTH1542XPC, YTH1542XPE, YTH1542XPG, YTH1542XPT, YTH1842XPB, YTH2048A, YTH2242A, YTH2242B, YTKH1542XPA

Dimensions that matter

  • Height: 1-1/8 inches
  • Outer diameter: 3-7/8 inches
  • Inner diameter: 3/8 inch

What you can expect in real use

Engineered to reduce friction and streamline mowing tasks, this pulley supports a smoother belt path and can help minimize downtime when belts wear or require adjustment. Individual results vary, and success depends on matching the part to your deck setup.

Installation notes

Replacing a worn pulley is a practical maintenance step. Ensure the belt is properly aligned and tensioned according to your mower manual, and confirm model compatibility before installation. A correct fit helps your deck operate more consistently during regular mowing.

FAQ

Q: Which models is this idler pulley compatible with?

A: Fits Husqvarna, Poulan, Craftsman, and AYP models listed, including LT and YTH series.

Q: What are the key dimensions?

A: Height 1-1/8 in; outer diameter 3-7/8 in; inner diameter 3/8 in.

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