AC Compressor 447220-8221 1209178 for MERCEDES-BENZ CLASE S (W220 / BM 220) BERLINA 3.2 | Plug & Play OEM Replacement – COWIN China TOP-QUALITY Auto Parts Supplier

🛠️ AC Compressor – OEM 447220-8221 (MERCEDES-BENZ Clase S W220 3.2)

Maintain premium cabin comfort with the COWIN OEM-Standard AC Compressor (7SEU17C).
Precision-engineered to match Mercedes-Benz 447220-8221 and 1209178 specifications, this unit delivers
stable compression ratio, low-noise operation and factory-correct bolt-on fitment for the W220 S-Class platform.

✅ Wesentliche Merkmale und Vorteile

• OEM-Anpassung: Direct replacement for 447220-8221, 1209178, A0012302811, compatible with DENSO 7SEU17C type.
• Fahrzeugabdeckung: MERCEDES-BENZ Clase S (W220 / BM 220) Berlina 3.2 – S 320 (Petrol) & 3.2 CDI (Diesel).
• Plug & Play: Complete assembly with clutch, pulley and oval connector interface—no modification required.
• Efficient Cooling: Optimized displacement for large-sedan A/C load and rapid cabin temperature recovery.
• 100% Tested: Each unit validated for pressure resistance, vacuum retention, clutch engagement and vibration noise.

🚗 Fahrzeugkompatibilität

⚙️ Technische Daten

• Produkt: AC Compressor (Automotive A/C)
• OE Part Number: 447220-8221, 1209178
• Compressor Type: 7SEU17C (DENSO Equivalent)
• Voltage: 12V
• Pulley: 6-Groove (6PK), ~105–110mm Diameter
• Clutch: Included & Pre-assembled
• Refrigerant: R134a
• Compressor Oil: PAG 46 (≈150ml)
• Inlet / Outlet: Ø28.4mm / Ø13mm (Typical)
• Stecker: Oval Plug Interface
• Einbau: Direct Bolt-On / Plug & Play
• Qualität: 100% Pressure, Leak & Performance Tested

🛠️ Installationshinweise

Disconnect the vehicle battery before removal to protect electrical components.
Recover existing refrigerant using certified A/C recovery equipment—do not vent R134a to atmosphere.
If the previous compressor failed internally, flush the condenser, evaporator and hoses; replace receiver drier / accumulator and expansion valve.
Evacuate the system under vacuum for at least 30 minutes and confirm stable vacuum before recharging to spec.
Verify clutch engagement, high/low side pressures and vent temperature after installation.

🏭 Warum COWIN Auto Parts wählen?

COWIN (Gaoyun) is a professional Chinese manufacturer and supplier of high-precision automotive components.
Our AC compressors for Mercedes-Benz platforms are produced under strict QC protocols, simulating real-world
operating loads to ensure sealing integrity, efficiency and long-term reliability for global aftermarket clients.