781664 Serpentine Belt for Thermo King Tri Pac 6 Rib Tripac APU 1E32438H05

This Serpentine Belt (78-1664) is a 6-rib serpentine belt for Thermo King Tri-Pac APU systems, matching OEM Part# 1E32438H05 and cross-reference 78-1664.

Product Overview

This serpentine belt drives the alternator and compressor on Thermo King Tri-Pac APU units, ensuring reliable auxiliary power. Designed as a direct replacement for OEM part 1E32438H05, this 6-rib serpentine belt resists heat and wear. It is an ideal solution for maintaining your Tri-Pac APU system's performance.

Key Features & Performance

• 6-rib construction provides efficient power transmission
• Durable EPDM rubber compound for long service life
• Exact length and profile for Thermo King Tri-Pac APU
• Resistant to heat, oil, and cracking
• Direct replacement for OEM part 1E32438H05

Fitment & Compatibility

• Thermo King Tri-Pac APU (all models)
• Replaces OEM part 1E32438H05
• Cross-reference part 78-1664

Common Uses

• Replacing worn or broken serpentine belt on Tri-Pac APU
• Maintaining alternator charging and compressor operation in sleeper cab HVAC
• Routine preventive maintenance of auxiliary power units
• Restoring belt-driven accessory function after belt failure

Technical Specifications

• Part Number(s): 78-1664, 1E32438H05
• Number of Ribs: 6
• Material: EPDM Rubber
• Belt Type: Serpentine

Frequently Asked Questions

Q: Is this belt identical to the original Thermo King belt? A: Yes, it is a direct replacement with the same dimensions and rib count as OEM part 1E32438H05.

Q: How often should I replace the serpentine belt on my Tri-Pac APU? A: Typical replacement interval is 12–24 months; inspect for cracks, glazing, or wear regularly.

Product appearance and specifications may vary slightly by batch. Compatibility may vary by serial number. Verify fitment before purchase.