Mishimoto Performance Aluminum Radiator for Select 1999-2009 BMW 3-Series and Z4 (Auto Trans) MMRAD-E46-323A

Fits select 1999-2009 BMW 3-Series (E46) and Z4 models equipped with automatic transmissions. This performance radiator is a direct-fit solution to the common failure point of OEM plastic-tank radiators, offering significantly improved durability and cooling efficiency for street or track use.

The Mishimoto Performance Aluminum Radiator features a large two-row core and 100% brazed aluminum construction with TIG-welded, polished end tanks. Engineered to reduce coolant temperatures by 19°F (10.5°C), it increases coolant capacity by 20% while expanding the air surface area by 41% compared to stock. This specific model for automatic transmissions includes a dedicated auxiliary inlet port for the factory transmission cooler connection and CNC-machined inlets/outlets that retain compatibility with stock plastic quick-disconnect hoses.

• Direct-fit for select 1999-2009 BMW E46 and Z4 models
• Includes auxiliary inlet port for stock automatic transmission cooler
• Two-row, 100% brazed aluminum core with TIG-welded end tanks
• 20% increase in coolant capacity and 18% increase in coolant surface area
• CNC-machined quick-disconnect inlets and outlets
• Reduces coolant temperatures by 19°F (10.5°C)
• Estimated installation time of one hour
• Mishimoto Lifetime Warranty
• Manufacturer Part Number: MMRAD-E46-323A