do88 Engine Oil Cooler — BMW M3 E46

Self-developed replacement engine oil cooler, built for track and endurance use where the factory cooler falls short.

Specification

• 185% larger core volume than OEM — 3,276 cm³ vs 1,148 cm³
• 50% larger active cooling area — 575 cm² vs 383 cm²
• 79% more oil volume held in the cooler — 0.70L vs 0.39L
• CNC-machined oil line connections and brackets
• Drop-in installation — fits OEM oil lines and brackets, no modification required

Suited to track racing, endurance racing, track days, or spirited street use where the stock cooler struggles to keep up.