Koyo VH422857 All Aluminum Racing Radiator BMW E46 Manual Transmission

The Koyo VH422857 is a high-performance all-aluminum racing radiator engineered specifically for 1999-2005 BMW E46 3-Series models with manual transmissions and M54 engines. This premium radiator delivers superior cooling efficiency compared to stock units, making it ideal for both spirited street driving and track applications.

Key Features:

• All-aluminum construction using aircraft-quality materials with Nocolok brazing for maximum strength and durability
• N-Flo Technology with aluminum partitions creating a multi-pass design that extends coolant dwell time for enhanced heat transfer
• Thicker core with optimized fin and tube pitch design for 20-30% more cooling capacity than standard radiators
• Direct bolt-in installation with no drilling, cutting, or modifications required
• Retains factory fan shroud and fan mounts for seamless integration
• Beautiful polished aluminum finish
• Manufactured in ISO 9001 certified facilities

Compatible with BMW 320i, 323Ci, 323i, 325Ci, 325i, 325xi, 328Ci, 328i, 330Ci, 330i, and 330xi models equipped with manual transmissions. Not compatible with M3 models or automatic transmissions. Koyo is Japan's largest radiator manufacturer, utilizing heli-arc welding and premium OE-grade materials to produce radiators that withstand harsh environmental conditions and years of under-hood heat cycling.