GELASKA 131494 Idler Pulley Craftsman Replaces 165888 532173437 532173438 597025001 532165888 532131494 532155191 for Craftsman 42 inch LT1000 LT2000 YTH18542 YTH1542XP YTH150 Mowers

What It Is

The GELASKA 131494 Idler Pulley is a replacement pulley for the mower deck belt system on Craftsman 42-inch lawn tractors. It keeps proper belt tension so the blades engage and spin correctly.

Fitment & Compatibility

Before buying, check three things:

1. Deck size: This pulley is designed for 42-inch Craftsman decks only. It will not fit 46-inch, 48-inch, or 54-inch decks.

2. Model series: Confirmed compatible with LT1000, LT2000, YTH18542, YTH1542XP, YTH150, and similar 42-inch Craftsman tractors. Verify your specific model number (found under the seat or in the manual).

3. OEM cross-references: Replaces Craftsman OEM part numbers 131494, 165888, 532173437, 532173438, 597025001, 532165888, and 532155191. If your original pulley has one of these numbers stamped on it, this is the correct replacement.

4. Measurements: The pulley is 3.5 inches in diameter with a 5/8-inch bore. Measure your old pulley to confirm dimensions match.

Key Things to Know

• Build quality: This is an aftermarket part, not OEM. Most users report it holds up well, but a few mention bearing noise after a season. Inspect for smooth rotation before installing.
• Installation difficulty: Easy—requires a socket wrench and possibly a pry bar to relieve belt tension. No special tools needed. Allow 15–30 minutes.
• Common gotcha: The pulley uses a standard hex bolt. Make sure your existing bolt is in good shape; if it’s stripped, you’ll need a new one (not included).
• Belt condition: If your old pulley failed due to a seized bearing, inspect the belt for damage or wear. A worn belt will quickly ruin a new pulley.

Should You Buy It

If you need a quick, budget-friendly fix for a worn or squeaky idler pulley on your 42-inch Craftsman tractor, this is a solid choice. It’s not the most durable option for heavy commercial use, but for residential mowing it delivers reliable performance at a fraction of the OEM price. Just confirm your model and measurements first.