CSF All-Aluminum Radiator for BMW E46 3-Series and 03-05 Z4

CSF’s high-performance all-aluminum radiator keeps your E46 or early Z4 running cool on the street and at the track. It is a true drop-in fit that uses OEM-style brackets and quick-connect hose fittings, delivering a major step up in heat rejection and durability with easy installation.

Highlights

• 2-row 42 mm dual core with CSF B-Tube technology for higher efficiency and strength
• Ultra-efficient multi-louvered fins with 6.5 mm fin height to maximize airflow and heat transfer
• CNC-machined quick-connect inlet and outlet for clean OEM-style hose connection
• CNC-machined brackets and fittings for superb fit and durability
• All-aluminum race style drain plug, smooth satin finish
• Drop-in fit, no modifications, accepts OEM quick-connect hoses, AC condenser, mounting brackets, and fan shroud

Why B-Tube Technology

• Special B-shaped tubes are seam-brazed and stronger than typical O-type tubes
• Allows thinner, lighter aluminum without sacrificing strength
• About 15 percent more tube surface area for improved heat transfer
• Dual liquid laminar flow design for efficient cooling under sustained load

Fitment

Manual transmission models only

• BMW E46 323i 1999-2000
• BMW E46 323Ci 2000
• BMW E46 325i 2001-2005
• BMW E46 325Ci 2001-2005
• BMW E46 325xi 2001-2005
• BMW E46 328i 1999-2000
• BMW E46 328Ci 2000
• BMW E46 330i 2001-2005
• BMW E46 330Ci 2001-2005
• BMW E46 330xi 2001-2005
• BMW E85/E86 Z4 2.5i 2003-2005
• BMW E85/E86 Z4 3.0i 2003-2005

Technical Details

• Core: 2-row, 42 mm dual core with B-Tube technology
• Fins: Multi-louvered, 6.5 mm fin height
• Connections: CNC-machined quick-connect, OE style
• Finish: Smooth satin

OEM Reference

• BMW 17119071518

SKU

3055

Warranty

2 years