MultiStar Cold – Your Source for Bus Air Conditioner Parts
The Bitzer 30405703 and 30405704 are high-quality valve plates (valve plate kits) designed for Bitzer 4PFCY, 4NFCY, 6PFCY, and 6NFCY compressors, widely used in bus air conditioning and transport refrigeration systems. These precision-engineered components control refrigerant flow into and out of the compressor cylinders, ensuring efficient compression and reliable cooling performance.
Multistar Cold is your one-stop supplier for bus AC parts and transport refrigeration parts – original new and China-made options at competitive prices.
CROSS-REFERENCE PART NUMBERS:
- Bitzer: 30405703, 30405704
OEM Code of Bitzer: 30405703, 30405704 – One-Stop Bus AC & Transport Refrigeration Parts Supplier
30405703 / 304 057-03
30405704 / 304 057-04
✨ Key Features & Benefits
- Complete Kit – Includes valve plate with gaskets for full replacement
- OEM-Grade Quality – Manufactured to Bitzer specifications for reliable sealing and performance
- Model-Specific Fitment – Each kit is tailored to the specific piston diameter of your compressor model
- Dynamic Working Valves – Flapper valves made of impact-resistant spring steel for highest reliability across the entire speed range
- Durable Construction – High-quality materials for extended service life in demanding transport environments
- One-stop supplier for bus AC & transport refrigeration parts
🔧 Technical Specifications
| Parameter | 30405703 | 30405704 |
|---|---|---|
| Part Number | 30405703 / 304 057-03 | 30405704 / 304 057-04 |
| Type | Valve Plate Kit with Gaskets | Valve Plate Kit with Gaskets |
| Compatible Compressors | 4PFC, 4PFCY, 6PFC, 6PFCY | 4NFC, 4NFCY, 6NFC, 6NFCY |
| Piston Diameter | 65.0mm | 70.0mm |
| Weight | Approx. 2 kg | Approx. 2 kg |
🌍 Compatible Bitzer Compressors
These valve plates are compatible with the following Bitzer compressor models:
| Kit Number | Compatible Models | Piston Diameter |
|---|---|---|
| 30405703 | 4PFC, 4PFCY, 6PFC, 6PFCY | 65.0mm |
| 30405704 | 4NFC, 4NFCY, 6NFC, 6NFCY | 70.0mm |
These compressors are developed specifically for vehicle air-conditioning and refrigeration applications, with a wide speed range of 500 to 3500 RPM.
| 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.






