MultiStar Cold – Your Source for Bus Air Conditioner Parts
The Thermo King 77-1663 (also referenced as 771663, 771-663) is a high-performance electromagnetic clutch assembly designed for Thermo King X426 and X430 compressors (thin shaft) in bus air conditioning systems. Featuring a 2A (Ø226mm) + 2B (Ø197mm) dual-groove pulley with 24V coil, it delivers reliable compressor engagement for demanding bus HVAC applications.
Multistar Cold is your one-stop supplier for bus AC and transport refrigeration parts – original new and China-made options at competitive prices.
CROSS-REFERENCE PART NUMBERS:
- 77-1663
OEM Code of Thermo King Clutch 77-1663 – Premium Electromagnetic Clutch – One-Stop Bus AC & Transport Refrigeration Parts Supplier
Thermo King:
77-1663, 771663, 771-663
77-2521, 772521, 772-521
45-0271, 450271, 450-271, 45-271, 45271
70-0105, 700105, 70-0105, 70-105, 70105
77-1229, 771229, 771-229
107-150, 107150, 10-7150
Clutch Plate (Hub):
TK 77-2543, TK 772543
77-2790, 772790
Clutch Coil (24V):
45-1227, 451227, 451-227
45-1389, 451389, 451-389
45-1849, 451849, 451-849
Autoclima:
40455105
HTAC:
HTAC 1301, HTAC1301, HTAC-1301
Other OEM Codes:
42550426
✨ Key Features & Benefits
- Complete Clutch Assembly – Includes clutch plate, 24V coil, and clutch pulley
- Dual-Groove Pulley – 2A + 2B configuration for flexible belt system integration
- Direct OEM Replacement – Fits Thermo King X426 and X430 compressors (thin shaft)
- Reliable Engagement – Consistent electromagnetic operation with stable 24V performance
- High Torque Capacity – 140 N.m static friction torque
- One-stop supplier for bus AC & transport refrigeration parts
📊 Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 77-1663 / 771663 / 771-663 |
| Alternate Numbers | Autoclima 40455105 |
| Pulley Type | 2A + 2B (dual-groove) |
| Pulley Diameters | 226mm (2 x 13mm / 2SPA-12.5mm) / 197mm (2 x 17mm / 2SPB-16.3mm) |
| Rated Voltage | DC 24V |
| Rated Power | 62W |
| Static Friction Torque | 140 N.m |
| Application | Thermo King X426, X430 (thin shaft) |
🌍 Applications
| Application | Details |
|---|---|
| Bus & Coach AC | Thermo King X426 and X430 compressor applications |
| OEM Replacement | Direct fit for Thermo King 77-1663, Autoclima 40455105 |
| Commercial Vehicle HVAC | Reliable cooling for passenger transport fleets |
| Advantage | Benefit |
|---|---|
| Factory Direct | No middlemen – competitive pricing |
| Quality Focus | OEM-grade materials and testing standards |
| Fast Delivery | Ready stock and quick production turnaround |
| Technical Support | Expert assistance for fitment verification |
| Global Reach | Shipping to 50+ countries worldwide |
| Flexible MOQ | Low minimum order quantities |
Multistar Cold – Your one-stop supplier for bus AC parts, transport refrigeration parts, Thermo King parts, and Carrier Transicold parts. OEM-grade quality, competitive pricing, and global shipping from China.