Alternator Drive Belt for John Deere 444H, 444H LL, TC44H & 644G Wheel Loaders

Fits Models At A Glance:

• John Deere Wheel Loaders:
  • 444H (55 Amp Alternator, Without A/C)
  • 444H LL (55 Amp Alternator, Without A/C)
  • TC44H (55 Amp Alternator, Without A/C)
  • 644G

Key Notes:

• Part Numbers: T178409, T428696
• Also Known As: 705K8
• Metric Code: 8PK1791
• Weight: Omitted
• Type: K Micro Rib (Poly-V / Serpentine) belt
• Material: Polyester cord construction
• Color: Black
• Pitch Length: 70.5"
• Outside Length: 71.13"
• Width: 8 Rib
• Thickness: 0.18"
• Application: Alternator drive belt — drives the alternator from the engine accessory drive to charge the battery and power the electrical system on John Deere 444H and 644G series wheel loaders
• Condition: Aftermarket replacement part
• Note: Fits 444H, 444H LL, and TC44H models equipped with the 55 Amp alternator and without A/C only — confirm alternator specification and A/C configuration before ordering

Common Use Case or Symptoms: Use when the alternator belt is cracking, glazing, squealing, or has broken — a failed alternator belt will cause the battery to discharge and electrical systems to lose power on applicable John Deere wheel loaders.

Why Choose Broken Tractor:

• ✅ Configuration Specific: Correctly identified for 444H, 444H LL, and TC44H models with the 55 Amp alternator and without A/C — ensures proper belt path fit and eliminates compatibility guesswork
• ✅ 8-Rib K Micro Rib Design: Multi-rib serpentine belt construction provides superior grip, reduced slip, and efficient alternator drive power transfer
• ✅ Fast Shipping from a U.S.-Based Team: In-stock and ready to ship same day from our U.S. warehouses