M157176 Idler Pulley Replacement for John Deere Mower Decks

Overview

This aftermarket M157176 idler pulley is a replacement mower deck pulley for compatible John Deere mower deck applications.

Use this listing when your original pulley number matches M157176. This pulley has 165 mm - 6.49 in outside diameter, 16 mm - 0.62 in bore, 12.9 mm - 0.50 in pulley width, 25.6 mm - 0.98 in pulley height.

Key Features

• Product Type: Idler Pulley
• Outside Diameter: 165 mm - 6.49 in
• Bore / Center Hole: 16 mm - 0.62 in
• Pulley Width: 12.9 mm - 0.50 in
• Pulley Height / Thickness: 25.6 mm - 0.98 in
• Aftermarket replacement pulley for mower deck belt-drive systems
• Use for compatible John Deere mower deck applications

Compatible Brands & Model Series

Common compatible model paths include:

• John Deere: X360 - Tractor , Lawn and Garden - 48-inch 54-inch
• John Deere: FS651V - Tractor , Lawn and Garden - 48-inch 54-inch
• John Deere: FH661V - Tractor , Lawn and Garden - 48-inch 54-inch
• John Deere: X500 - Tractor , Lawn and Garden - 48-inch 54-inch ( Serial Number - (030001 - )
• John Deere: X520 Multi-Terrain Tractor - 48-inch 54-inch ( Serial Number - (030001 - )
• John Deere: X530 Tractor Multi-Terrain Series with 54-inch Mower Deck - 48-inch 54-inch
• John Deere: X534 Multi-Terrain Tractor with 48-inch or 54-inch Mower Deck - 48-inch 54-inch ( Serial Number - (030001 - )
• John Deere: X540 Multi-Terrain Tractor - 48-inch 54-inch ( Serial Number - (030001 - )
• John Deere: X590 Lawn and Garden Tractor - 48-inch 54-inch
• John Deere: X300 Select Series Tractor - 48-inch
• John Deere: X304 - Tractor , Lawn and Garden - 48-inch
• John Deere: X310 - Tractor , Lawn and Garden
• John Deere: FS600V-BS21R - Tractor , Lawn and Garden - 48-inch
• John Deere: X320 Select Series Tractor - 48-inch 54-inch
• John Deere: X324 - Tractor , Lawn and Garden- 48-inch
• John Deere: X340 - Tractor , Lawn and Garden - 48-inch ( Serial Number - ( 030001 - ) , (085001 - )

Replaces OEM Part Numbers

• M157176

Common Symptoms of a Worn Deck Pulley

• Mower deck belt squealing, slipping, or jumping off track
• Visible pulley wobble or uneven belt tracking
• Grinding, rattling, or bearing noise near the deck pulley
• Reduced blade speed or inconsistent cut quality caused by poor belt tension

Why Buy From PTO Direct USA?

• Fast USA shipping
• Fitment-focused replacement parts support
• Clear part-number matching to help reduce wrong-part orders
• Replacement mower deck parts for homeowners, shops, and landscape crews

Need Help Confirming Fitment?

If you are not sure this is the correct pulley, send us your mower model number, deck size, and the part number from your original pulley. We can help compare the replacement path before you order.

FAQ

How do I confirm this pulley fits my mower?

Start by matching the OEM pulley number on your original part. Then compare the outside diameter, bore or center-hole size, pulley width, belt profile, deck layout, and mower model.

Can I order by appearance alone?

No. Similar-looking deck pulleys can have different bore sizes, offsets, belt profiles, and deck applications. Match the part number and dimensions first.

What causes a mower deck pulley to fail?

Common causes include worn bearings, belt misalignment, impact damage, seized hardware, or long-term wear from deck belt tension.

Need another pulley? Browse the full mower deck pulley collection for additional replacement options.