Antanekr 173437 532173437 Flat Idler Pulley for Craftsman Lawn Mower Tractor, Mower Pulley Fits Husqvarna Poulan 42" 44" Deck Replace 131494 532131494 173438 165888 LT16542 LT18452 LTH1342 LTH1542

What It Is

The Antanekr 173437 is a flat idler pulley that guides and tensions the deck belt on lawn tractor mowers. It’s designed for Craftsman, Husqvarna, and Poulan tractors with 42” or 44” cutting decks, replacing OEM part numbers 173437, 131494, 173438, and 165888.

Fitment & Compatibility

Before buying, check three things:

1. Deck size – This pulley fits 42” and 44” decks only. Measure your deck width (cutting path) to confirm.
2. Model number – Verified fits: Craftsman LT16542, LT18452, LTH1342, LTH1542, and many Husqvarna/Poulan models with 42”–44” decks. Cross-reference your tractor’s model number with OEM parts 173437, 532131494, 131494, 173438, or 165888.
3. Physical dimensions – This pulley has a 3.5” outer diameter and a 0.5” center hole (for a 1/2” bolt). Measure your old pulley’s OD and hole size to ensure match. It uses a standard 1/2” hex bolt, not a shoulder bolt.

If your deck uses a different size pulley (e.g., 4” or 3”), this won’t work.

Key Things to Know

• Quality – This is an aftermarket steel pulley with sealed ball bearings. Most users report it’s as durable as OEM for about half the price. Expect 2–3 seasons of residential use.
• Installation – Easy: remove the old pulley’s center bolt (likely 1/2” or 9/16”), swap the pulley, and re-torque the bolt. No special tools needed. If the old bearing is seized, you may need a breaker bar.
• Gotcha – The pulley comes with a small spacer/washer. Use it if your deck has a recessed mounting hole; otherwise, the pulley may rub the deck. Check your old setup for a spacer.
• Deck belt – Replacing the pulley is a good time to also replace the deck belt, as worn belts accelerate pulley wear.

Should You Buy It

This is a solid, budget-friendly replacement for Craftsman, Husqvarna, or Poulan 42”/44” deck tractors. If your old pulley is noisy, wobbling, or seized, this will fix it for $13. It’s not for commercial use or odd-size decks, but for residential mowing, it’s a reliable choice that matches OEM fitment.