BITZER 4NFCY Bus AC Compressor – 4-Cylinder Open Drive for Bus Air Conditioning

MultiStar Cold – Your Source for Bus Air Conditioner Parts

The BITZER 4NFCY is a robust 4-cylinder open-drive reciprocating compressor designed for bus and coach air conditioning systems . As a proven model in BITZER’s vehicle AC lineup, it is widely used in long-distance coaches, city buses, and school buses, delivering reliable cooling performance in demanding transport environments .

CROSS-REFERENCE PART NUMBERS:

  • 4NFCY
  • Konvekta:H13002903
  • SUTRAK:240101213

Parameter
Specification
Model
4NFCY
Type
4-cylinder open-drive reciprocating 
Displacement
~630–647 cc 
Cooling Capacity
Approx. 10 TR (5-50 kW range) 
Refrigerant
R134a 
Drive
V-belt via electromagnetic clutch 
Speed Range
500 – 2,600 rpm 
Weight (without clutch)
~42 kg
Origin
Germany 

Compatible Magnetic Clutch Models

Clutch ModelKey SpecificationsApplication Notes
Lang KK73.1OEM fitment for Prevost coaches (2014+)Factory-installed on certain heavy-duty coaches 
LINNIG LA1624V, torque rating suitable for 4NFCYAlternative OEM clutch for Prevost and other manufacturers 
MCT-C150N24V, 58.8W, 25 kg·m static friction torque, max speed 3,500 rpmCompatible with 4NFCY, 4PFCY, 4TFCY, 4UFCY series 
260/216-2A2B24V, <60W, 260/216mm pulley diameter, 2A2B grooveSuitable for BITZER (U~4NFCY) and BOCK FKX-40 compressors 
DL 230-205 2A2B24V, 60W, 16kg, carbon steel constructionApplication for FK40 and 4NFCY compressors; 18-month warranty 

Brand new, factory-sealed, with full manufacturer warranty.

Most popular for aftermarket sales. Professionally restored to like-new condition, comes with standard warranty.

Manufactured locally, tailored for regional specifications and compliance.

Multistar Cold – Your trusted partner for bus air conditioning compressors and complete HVAC spare parts. OEM-grade quality, competitive pricing, global shipping from China.

For more information use the form below or email us: info@multistar-parts.com