EN
Bitzer 4NFCY Bus AC Compressor – Executive Brief: 647cc Rebuilt Core for 8–10 m Coaches & Buses | 12V/24V R134a
- Overview
- Recommended Products
- Demand-proven: Among the highest-volume bus compressor cores in global aftermarket circulation.
- Displacement-matched: 647 cm³ across 4 cylinders – the standard fit for 8–10 m coaches and buses.
- Cost profile: 40–60% savings versus new OEM units with a documented rebuild trail.
- Supply security: 3–7 business day dispatch from stock-held cores in Xiangtan, China.
- Headquarters: No. 28, Jili West Road, Jiuhua Economic Development Zone, Xiangtan City, Hunan Province, China
- WhatsApp / WeChat: +86-18670382782 | Landline: +86-0731-82034997 / 82034998
- E-Mail: [email protected]
- Websites: www.weilipart.com | www.weiliautomotive.com | www.cooliparts.com
Executive Summary
The Bitzer 4NFCY is one of the most widely fitted bus AC compressors in commercial fleets, and the aftermarket never has enough of them. Hunan Weili supplies rebuilt 4NFCY cores that restore OEM performance – 647 cm³ swept volume, 56.2 m³/h at 1450 rpm – at 40–60% below new-OEM pricing, backed by an IATF 16949 quality system and a 100% tested dispatch policy.
Remanufactured Bitzer 4NFCY – 647cc 4-Cylinder Core
At a Glance: Why Procurement Teams Specify 4NFCY
Technical Specifications
Model |
Bitzer 4NFCY (KV6-647 / 4-NFC) |
Cylinder volume |
647 cm³ |
Displacement (1450 rpm) |
56.2 m³/h |
Displacement (3000 rpm) |
116.4 m³/h |
Cylinders x bore x stroke |
4 x 70 mm x 42 mm |
Allowed speed range |
500 – 3500 1/min |
Weight (without clutch) |
33.0 kg |
Magnetic clutch 12V/24V |
LA16 (Option, 10 kg) |
V-belts |
2 x SPB |
Max. pressure (LP/HP) |
19 / 28 bar |
Oil (R134a / R22) |
BSE 55 (Opt.) / B5.2 (Std.) |
Oil charge |
2.5 dm³ |
Capacity control |
100-50% (Option) |
Inside Our Remanufacturing Workshop
Cost-Benefit: Rebuilt vs New
A new OEM 4NFCY typically carries a 2–3x premium over a professionally rebuilt core. The trade is trust in the rebuild – which is exactly what our audited process delivers: full disassembly, ultrasonic cleaning, new piston rings/bearings/seals/gaskets, CNC restoration, dynamic balancing, 100% helium leak test and a performance bench test on every unit. No samples, no shortcuts.
Clean-Line Assembly
100% Quality Control – Testing & Balancing
Bitzer 4NFCY – Frequently Asked Questions
Q: What vehicles use the 4NFCY? A: 8–10 m coaches, city buses and mid-size trucks with belt-driven AC systems.
Q: Is the 647 cm³ displacement correct? A: Yes – 4 cylinders x 70 mm bore x 42 mm stroke = 647 cm³.
Q: Do you supply the LA16 clutch? A: Yes, in 12V or 24V DC as an option.
Q: Can it replace a 4PFCY installation? A: Fitment depends on mounting and drive – confirm with our engineers before ordering.
Q: Lead time? A: 3–7 business days for standard models.
Contact & Ordering
Hunan Weili Auto Parts Appliance Co., Ltd
