Continental 4PK844ELAST Serpentine Belt - Air Conditioning

Continental Metric Stretch Belt for BMW A/C

The Continental Metric Stretch Belt is a serpentine-style accessory drive belt built for BMW air conditioning applications that require a stretch-fit design. This Continental 4PK844ELAST belt uses EPDM rubber compounds and a polyamide tensile cord to stretch during installation and recover to maintain tension in service.

For BMW owners searching for a metric stretch belt for the A/C drive system, the 4PK844ELAST offers an OE-style fit approach with a functional part number that identifies the rib count, length, and stretch-belt construction.

Key Features

• 4-rib metric stretch belt construction
• 0.53 in. top width for the specified accessory drive application
• 33.23 in. belt length
• EPDM compound for durability in accessory drive service
• Polyamide tensile cord helps the belt recover tension after installation
• ELAST suffix identifies Continental stretch-belt design

Product Details

Continental 4PK844ELAST is a metric stretch serpentine belt designed for air conditioning use on select BMW models. It is listed for 2004-2005 BMW 545i, 645Ci, 745i, and 745Li; 2006-2008 BMW 750i and 750Li; and 2006-2010 BMW 550i, 650Ci, and 650i. This part cross-references 4PK824 and 11287520177 for the same application. If you are replacing a BMW 550i A/C stretch belt or sourcing a Continental 4PK844ELAST for a BMW 650i, the fitment and dimensions are matched to the listed application.

Common Problems This Belt Can Address

• Cracked or glazed A/C drive belt material
• Noise from a worn accessory drive belt
• Loss of proper belt tension in a stretch-fit system
• Service replacement for a belt that no longer tracks correctly
• Restoration of A/C compressor drive operation on listed BMW models

Installation Notes and Tips

Stretch belts are installed without a conventional tensioner adjustment, so correct routing and alignment are important before installation. Verify the rib count, belt length, and ELAST designation against the removed belt or vehicle service information before fitting. This Continental 4PK844ELAST is intended for the listed BMW air conditioning applications, including BMW 545i, BMW 650Ci, and BMW 750Li fitments.

Quality Assurance

Continental uses OEM-oriented belt technology for this metric stretch belt, with EPDM construction and a tensile cord designed to maintain operating tension after installation. The part number format also helps confirm the correct stretch-belt application for the vehicle.