CSF 7058 Triple-Pass Radiator for 2001-2006 BMW E46 M3 3.2L

Vehicle Fitment

• 2001-2006 BMW E46 M3 (3.2L S54 I6) - Triple-Pass Radiator

Features

• High-performance all-aluminum radiator engineered for superior cooling
• 2-row "B-Tube" core with triple-pass flow design for maximum heat dissipation
• Exclusive CSF B-Tube technology increases coolant surface contact area
• Ultra-efficient multi-louvered fin pattern enhances airflow
• CNC-machined quick-connect inlet/outlet fittings for secure OE-style hose connections
• CNC-machined brackets and fittings for robust, accurate drop-in fit
• Race-style aluminum drain plug included for service convenience
• Drop-in fit requiring no modifications to mounting points or OEM components

Specifications

• Part Number: CSF 7058
• Core Material: All-aluminum
• Tank Material: All-aluminum
• Rows: 2
• Core Thickness: Approx. 42 mm
• Core Height: ~22.94"
• Core Width: ~15.31"
• Flow Type: Triple-pass cross-flow design
• Inlet Diameter: ~1.50"
• Outlet Diameter: ~1.50"
• Radiator Cap: Not included
• Transmission/Engine Coolers: Not integrated
• Sold Individually (1x radiator)

Included Components

• 1x CSF 7058 High-Performance All-Aluminum Triple-Pass Radiator
• 1x CNC-machined race-style aluminum drain plug

Product Description

The CSF 7058 radiator is a high-performance cooling solution engineered specifically for the **2001-2006 BMW E46 M3** equipped with the **3.2L S54 inline-6 engine**. Built around dual 42 mm rows of CSF's proprietary "B-Tube" core technology with a **triple-pass flow structure**, this radiator forces coolant across the core three times before exiting, delivering outstanding heat rejection and helping maintain optimal engine coolant temperatures under both spirited street driving and track conditions.

Designed as a direct **drop-in replacement**, the CSF 7058 uses CNC-machined quick-connect inlet/outlet fittings and brackets that match OE locations and hardware, requiring no modifications during installation. Its all-aluminum construction enhances durability and corrosion resistance while the triple-pass core and multi-louvered fins maximize airflow and thermal efficiency. Ideal for performance enthusiasts or daily drivers looking for upgraded cooling beyond stock capabilities, this radiator helps preserve engine performance and longevity in the demanding E46 M3 platform.