64311000004 Cabin Air Filter | BMW E46 3 Series 318i 325i 2003

🔧 Cabin Air Filter – OEM 64311000004 / CUK6724 (BMW 3 Series E46)

Ensure clean and healthy interior air with the
COWIN OEM‑Standard Cabin Air Filter.
Designed for BMW 3 Series E46 (318i / 325i, 2003 model year), this high‑efficiency filter effectively removes dust, pollen, allergens, and airborne contaminants, improving HVAC performance and passenger comfort.

✅ Key Features & Benefits

• OEM Reference: Direct replacement referencing part numbers
  64311000004 / CUK6724 / E977LC.
• Application: Specifically designed for:
  • BMW 3 Series E46 (318i / 325i, 2003 model year, all trims)
  • BMW 3 Series E46/5 (Compact models, compatible variants)
  • Selected Mercedes‑Benz models sharing this cabin filter specification
• Filter Type: Cabin Air Filter / Pollen Filter.
• Filtration Efficiency: High‑efficiency media captures fine particles and allergens.
• Interior Air Quality: Reduces dust, pollen, and unpleasant odors.
• HVAC Protection: Prevents clogging of evaporator and blower motor.
• Durable Construction: Reinforced frame and high‑quality filter media.
• Direct Replacement: Matches original dimensions and specifications.

🚗 Vehicle Compatibility

📐 Product Dimensions

• Length: 673 mm / 660 mm
• Width: 95 mm / 104.5 mm
• Height: 24 mm

⚙️ Technical Specifications

• OEM Numbers: 64311000004 / CUK6724
• Cross References: E977LC
• Product: Cabin Air Filter
• Size: 673/660 × 95/104.5 × 24 mm
• Installation: Direct replacement
• Quality: 100% Tested & Inspected

🛠️ Installation Note

Professional installation is recommended.
Locate the cabin filter housing behind the glove box or under the dashboard.
Remove the old filter carefully to avoid spreading dust.
Install the new filter in the correct airflow direction.
Replace filters at intervals recommended by the vehicle manufacturer.

🏭 Why Choose COWIN Auto Parts?

COWIN (Gaoyun) specializes in steering, brake, and filtration system components.
Every filter is inspected for material integrity, dimensional accuracy, and filtration performance.