AM128118 Idler Pulley Replacement for John Deere Mower Decks
AM128118 Idler Pulley Replacement for John Deere Mower Decks
Overview
This aftermarket AM128118 idler pulley is a replacement mower deck pulley for compatible John Deere mower deck applications.
Use this listing when your original pulley number matches AM128118. This pulley has 120.34 mm - 4.73 in outside diameter, 16.88 mm - 0.66 in bore, 47.26 mm - 1.86 in pulley width.
Key Features
- Product Type: Idler Pulley
- Outside Diameter: 120.34 mm - 4.73 in
- Bore / Center Hole: 16.88 mm - 0.66 in
- Pulley Width: 47.26 mm - 1.86 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: Z665 EZtrak Mower - 60-inch
- John Deere: Z655 EZtrak Mower - 54-inch
- John Deere: Z645 EZtrak Mower - 48-inch 625 EZtrak Residential Zero Turn Mower - 54-inch
- John Deere: Z465 EZtrak Residential Zero Turn Mower - 48-inch
- John Deere: Z445 EZtrak Residential Zero Turn Mower - 48-inch 54-inch
- John Deere: Z435 EZtrak Residential Zero Turn Mower - 48-inch54-inch
- John Deere: Z425 EZtrak Residential Zero Turn Mower - 48-inch 54-inch
- John Deere: Z355E - ZTRAK - 48-inch
- John Deere: Z255 - EZTRAK - 48-inch
- John Deere: Z245 EZtrak Residential Zero Turn Mower - 48-inch
- John Deere: X324 - Tractor Lawn and Garden - 48:
- John Deere: LX200 Series GT225 GT235 GT235E
- John Deere: GX355 - Tractor Lawn and Garden - 42-inch
- John Deere: GT245 LT170 - 38-inch 42-inch 44-inch 48-inch 54-inch
- John Deere: FH721V - EZTRAK- 48-inch
- John Deere: FH721V - EZTRAK - 48-inch 54-inch
- John Deere: 44Q977 - EZTRAK - 48-inch 54-inch
- John Deere: 44Q97 - EZTRAK- 48-inch
- John Deere: 44L777 - EZTRAK - 48-inch 54-inch
- John Deere: 44L777 - EZTRAK - 48-inch
- John Deere: 445577 - EZTRAK - 48-inch 54-inch
- John Deere: 40H777 - EZTRAK - 48-inch 54-inch
- John Deere: 407777-0290-G5 - EZTRAK - 48-inch
- John Deere: 2V78C - Tractor Lawn and Garden - 42-inch
- John Deere: Z435 EZtrak Residential Zero Turn Mower - 48-inch 54-inch
- John Deere: X324 - TRACTOR LAWN AND GARDEN - 42-inch
- John Deere: LX200 Series GT225 GT235 GT235E GT245 LT170 - 38-inch 42-inch 44-inch 48-inch 54-inch
Replaces OEM Part Numbers
- AM128118
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.