do88 Aluminum Radiator — BMW M3 E46

Self-developed performance radiator replacing the factory unit's plastic end tanks — a common failure point on the E46 M3 under sustained heat.

Specification

• 17% larger core volume than OEM — 11,736 cm³ vs 10,068 cm³
• Triple-pass design — coolant passes through the core three times
• Fully aluminum construction with continuous welds, no plastic tanks to crack
• No quick-connect fittings — built for reliability under racing conditions
• Bosch temperature sensor included, plus an M12x1.5 port for an additional sensor (e.g. to control an electric fan)
• Front-mounted brackets prepared for the do88 auxiliary oil cooler
• New hoses included, drop-in installation

Finish

Hoses available in Blue, Black, or Red. No performance difference between colors.