CSF 7045 High-Performance Radiator for 2007-2016 BMW 135i/335i/1M/Z4

Vehicle Fitment

• 2007-2016 BMW 135i (3.0L I6 N54/N55) - Radiator (Manual Trans)
• 2011 BMW 1 Series M (3.0L I6 N54) - Radiator (Manual Trans)
• 2007-2013 BMW 335i (3.0L I6 N54/N55) - Radiator (Manual Trans)
• 2009-2016 BMW Z4 sDrive35i (3.0L I6 N54/N55) - Radiator (Manual Trans)

Features

• High-performance all-aluminum radiator engineered to surpass OEM cooling efficiency
• 2-row core with CSF's exclusive B-Tube technology for enhanced heat transfer
• Ultra-efficient multi-louvered fin design for improved airflow and thermal dissipation
• CNC-machined quick-connect inlet and outlet fittings for OE-style hose connections
• CNC-machined brackets and fittings for durable, accurate fitment
• All-aluminum construction resists corrosion and fatigue
• Drop-in design installs using OEM hardware, no modifications required
• Race-style aluminum drain plug included for convenient service access

Specifications

• Part Number: CSF 7045
• Core Material: Aluminum
• Tank Material: Aluminum
• Rows: 2
• Core Height: ~23.63"
• Core Width: ~13.63"
• Core Thickness: ~1.63"
• Flow Type: Cross-flow radiator
• Inlet Diameter: ~1.5" (top right)
• Outlet Diameter: ~1.5" (bottom left)
• Cooling Capacity: Upgraded 2-row core for enhanced heat rejection
• Transmission/Engine Coolers: None integrated
• Radiator Cap: Not included
• Sold Individually (1x radiator)

Included Components

• 1x CSF 7045 High-Performance All-Aluminum Radiator

Product Description

The CSF 7045 high-performance radiator is engineered as a direct-fit upgrade for select **BMW 1 Series, 3 Series, 1M, and Z4** models equipped with the 3.0 L inline-6 N54 or N55 engine and manual transmission. Featuring a robust all-aluminum 2-row core with CSF's proprietary B-Tube technology, this radiator delivers improved heat transfer and cooling efficiency over the stock unit - helping maintain optimal engine operating temperatures under spirited driving and high-load conditions. Its multi-louvered fin design maximizes airflow through the core for enhanced thermal rejection.

Designed for a true drop-in installation, the CSF 7045 uses original mounting points and OEM-style quick-connect inlet and outlet fittings, requiring no modifications to factory hoses, brackets, or fan shroud. CNC-machined brackets and fittings provide a secure fit, while the polished all-aluminum construction resists corrosion and provides long-term durability. Ideal for performance enthusiasts seeking enhanced cooling performance for their BMW 135i, 335i, 1M, or Z4 models, this radiator supports both daily driving and competitive use.