A2-09 Original Factory Shaft Seal for 4NFCY Bus AC Compressor

The A2-09 is a genuine original factory compressor shaft seal manufactured to OEM specifications, designed exclusively for 4NFCY series heavy-duty bus air conditioner compressors. As a critical sealing component mounted on the compressor crankshaft, it prevents refrigerant and lubricating oil leakage from the shaft gap, directly ensuring the cooling efficiency and long-term stable operation of the AC system.

Produced with original factory formulas and precision processing standards, this OEM shaft seal features outstanding refrigerant resistance, wear resistance and temperature adaptability. It maintains stable sealing performance under long-term high-speed rotation and extreme working conditions, matching the service life of the original compressor. Compared with ordinary replacement parts, the original factory seal provides a perfect fit, higher reliability and longer maintenance intervals, making it the preferred choice for high-standard compressor overhaul.

With 39 years of professional experience in the bus HVAC industry, TCHAIN supplies 100% quality-inspected original factory compressor parts that are fully compatible with most 6-14m diesel buses, school buses, shuttle buses and long-distance coaches equipped with 4NFCY series compressors. We offer competitive wholesale prices, comprehensive technical support and fast global delivery to minimize your fleet maintenance downtime.

Applications

• 4NFCY series bus AC compressors (original equipment replacement)

• Heavy-duty city bus air conditioning system overhaul

• School bus AC compressor high-standard maintenance

• Commercial shuttle bus AC system repair

• Long-distance intercity coach HVAC service

• Special vehicle air conditioner compressor original parts replacement