CSF High-Performance All-Aluminum Triple Pass Radiator for BMW E46 M3

Description

The CSF #7058 High-Performance Aluminum Radiator is engineered specifically for BMW E46 M3 models from 2001 to 2006, offering superior cooling performance for street and track use. Built with over 50 years of radiators manufacturing expertise, CSF’s innovative design delivers optimal heat dissipation, making it an essential upgrade for high horsepower builds and racing applications. The radiator features a unique triple-pass flow structure that allows coolant to traverse the core three times before exiting, significantly lowering outlet temperatures and enhancing engine efficiency. This design ensures your engine remains at optimal operating temperatures even during demanding driving conditions, boosting performance and reliability.

Constructed with a 2-row core measuring approximately 42mm in thickness, the radiator utilizes CSF’s exclusive B-Tube Technology—an engineered “B”-shaped tube that replaces traditional oval tubes. These B-tubes are carefully formed and brazed over the seam, providing increased strength and allowing the use of thinner, lighter aluminum with improved heat transfer capabilities. The increased surface area of the B-tubes—about 15% more than standard tubes—enables dual liquid laminar flow, which enhances coolant flow and heat rejection. The radiator is equipped with ultra-efficient, multi-louvered fins with a fin height of 6.5mm, meticulously aligned to maximize airflow and heat dissipation. Fin specifications are precisely tested in CSF’s wind-tunnel lab to ensure maximum efficiency.

Designed for straightforward installation, the CSF radiator is a direct drop-in fit that requires no modifications. It accepts OEM components, including quick-connect hoses, the condenser, mounting brackets, and fan shroud, simplifying the upgrade process. CNC-machined brackets and fittings ensure a durable, precise fit, while the smooth satin finish complements the vehicle’s aesthetic. This radiator replaces OEM part number 17102228941 and includes an all-aluminum race-style drain plug, making it a reliable choice for performance-minded enthusiasts seeking enhanced cooling performance in their BMW M3. Trust CSF’s industry-leading engineering to keep your engine running cooler and performing at its best under demanding conditions.

Features:

• Drop-in fit requiring no modifications for easy installation

• Triple-pass flow structure for maximum cooling efficiency

• Core features ultra-efficient multi-louvered fins with 6.5mm fin height

• Dual-row 42mm core utilizing CSF’s exclusive B-Tube technology

• CNC-machined brackets and fittings for precise fit and durability

• CNC-machined quick connect inlet and outlet connections

• All-aluminum construction with satin finish for corrosion resistance

• Replaces OEM part number 17102228941

• Includes a race-style aluminum drain plug

Fitment:
BMW M3 Base 2001
BMW M3 Base 2002
BMW M3 Base 2003
BMW M3 Base 2004
BMW M3 Base 2005
BMW M3 Base 2006