A direct-fit, triple-pass all-aluminum performance radiator engineered by CSF for the 2001–2006 BMW E46 M3 with the 3.2-liter S54 engine.
Vehicle fitment
- 2001–2006 BMW M3 (E46, 3.2L S54 inline six)
This listing is limited to the application currently published by CSF for part 7058. No non-M E46, E36, E39, Z3, Z4, or engine-swap fitment is implied. Confirm model, chassis, engine, production date, and existing cooling-system configuration before ordering.
Why upgrade
- Triple-pass structure routes coolant across the radiator core three times before exit
- Two-row 42 mm core uses CSF B-tube construction
- Current 2026 specification uses 5 mm track-spec multi-louvered fins
- All-aluminum construction replaces plastic end-tank architecture
- Smooth satin finish with CNC-machined brackets and connections
Technical details
- Manufacturer: CSF
- Manufacturer part number: 7058
- Construction: all-aluminum, two-row 42 mm core
- Flow design: triple pass
- Connections: CNC-machined quick-connect inlet and outlet
- Mounting: original-equipment-style brackets and fittings
- Finish: smooth satin
- OEM cross reference: BMW 17102228941
What is included
One CSF 7058 radiator. Radiator cap, thermostat, frame, mounting hardware, engine-oil cooler, and transmission-oil cooler are not included.
Supporting components
Inspect the coolant hoses, expansion tank, cap, thermostat, water pump, fan, shroud, condenser attachments, mounts, and seals before installation. Replace any component that is leaking, brittle, damaged, or otherwise unserviceable.
Installation
CSF describes part 7058 as a drop-in-fit radiator requiring no vehicle modification and accepting the original quick-connect hoses, condenser, mounting brackets, and fan shroud. Professional installation is recommended. The cooling circuit must be correctly drained, filled, bled, pressure-checked, and inspected according to current BMW service information.
Warranty
CSF lists a two-year warranty for part 7058. Eligibility, exclusions, documentation, and claim handling are governed by CSF's current written warranty terms.