604704 Pulley Replacement for Hustler Mower Decks
604704 Pulley Replacement for Hustler Mower Decks
Overview
This aftermarket 604704 pulley is a replacement mower deck pulley for compatible Hustler mower deck applications.
Use this listing when your original pulley number matches one of the replacement numbers below and the pulley dimensions match your original deck pulley. Confirm outside diameter, bore or center-hole size, pulley width, and belt profile before installation.
Key Features
- Product Type: Pulley
- Outside Diameter: 6.47 in - 164.5 mm
- Bore / Center Hole: 0.94 in - 24 mm
- Pulley Width: 1.02 in - 26.5 mm
- Aftermarket replacement pulley for mower deck belt-drive systems
- Use for compatible riding mower and zero-turn mower deck applications
Compatible Brands & Model Series
Supplier part-number paths for this pulley include:
- Hustler: Fastrak 60-inch
- Hustler: Raptor SD FR651 7000 Series Pro
- Hustler: Fastrak FR730 FT730 7500 EFI SDX
- Hustler: Raptor SD SDX KT745 FR730 7000 Series
- Hustler: Raptor SD 7000 Pro S/N 19110711
- Hustler: Raptor SD 934588 936708 938142
- Hustler: Raptor SD 938639 939405 936716US
- Hustler: Raptor SD 7000 Pro S/N 19113991
- Hustler: 934778 935841 935916 937805
- Hustler: 937839 937888 938035 938688
- Hustler: 938696 939181 939207 939769
- Hustler: Raptor SD
Replaces OEM Part Numbers
- 604704
Related Spindle Assembly
This 604704 deck spindle pulley is commonly associated with Hustler deck spindle paths including 605380, 607418P, and 607418. If you need the spindle assembly that commonly pairs with this pulley, see our 607418P / 601804 Hustler spindle assembly.
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.