Koyorad CD420603 A/C Condenser

Koyorad CD420603 A/C Condenser Overview

The Koyorad CD420603 is an OE-equivalent A/C condenser built for BMW cooling system service. It uses an aluminum tube-fin core and includes a drier, making it a direct-fit replacement for a range of BMW 3 Series, 1 Series, M3, and Z4 applications.

Koyorad’s A/C condenser line focuses on replacement parts engineered with the technical experience needed to match original equipment fit and function. For BMW owners searching for a Koyorad A/C condenser or the CD420603 condenser, this part is built for straightforward HVAC repair on covered vehicles.

Key Features

• OE-equivalent replacement condenser from Koyorad
• Aluminum tube-fin core construction for efficient heat transfer
• Core dimensions: 23.0625 in. length, 15.625 in. width, 0.625 in. thickness
• Includes drier for added HVAC service convenience
• Direct replacement for select BMW 128i, 328i, M3, Z4, 323i, 325i, 330i, and related models
• Part number: CD420603

Detailed Description

The Koyorad CD420603 condenser is designed for BMW air conditioning repair where the original condenser has leaked, corroded, or lost cooling efficiency. Its tube-fin aluminum core supports heat exchange in the A/C system, while the included drier helps restore proper refrigerant circuit service on the listed BMW applications. This part fits 2008-2011 BMW 128i, 2007-2011 BMW 328i, 2009-2011 BMW 328i xDrive, 2008-2011 BMW M3, 2009-2011 BMW Z4, 2006-2010 BMW 323i, 2007-2008 BMW 328xi, 2006 BMW 325Ci, 2006 BMW 325i, 2006 BMW 325xi, 2006 BMW 330Ci, 2006 BMW 330i, and 2006 BMW 330xi. The CD420603 is a practical choice for BMW A/C condenser replacement when restoring cabin cooling performance.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Fix

• Refrigerant leaks caused by a damaged or corroded condenser
• Weak cabin cooling from restricted condenser airflow or heat transfer loss
• A/C system performance issues after front-end cooling component wear
• Service needs on BMW HVAC systems with a failed original condenser
• Replacement of a condenser that no longer maintains proper system pressure

Installation Notes and Tips

Verify vehicle fitment by year, make, and model before installation. Inspect adjacent A/C components, seals, and lines for wear or contamination during service. Because the drier is included, this condenser supports a more complete HVAC repair, but system evacuation, leak checking, and proper refrigerant recharge should be performed according to BMW service procedures. Mounting hardware is not included.

Quality Assurance

Koyorad manufactures OE-equivalent condensers using application-specific engineering and replacement-focused construction. The CD420603 is built to match the listed BMW fitments and support reliable A/C system service.