do88 Engine Oil Cooler — BMW M3 E90/E92

Self-developed replacement engine oil cooler addressing a known weak point on the E9x M3's V8 — rising oil temperature under sustained load.

Specification

• 69% larger core volume than OEM — 5,247 cm³ vs 3,105 cm³
• 59% larger active cooling area — 7,728 cm² vs 4,858 cm²
• 19% lower oil temperature in do88's own testing — 84°C vs 103°C
• 13.9% more oil volume held in the cooler
• 10-row Bar & Plate core with high-density offset fin design
• CNC-machined oil line connections and brackets — drop-in fitment, no modification required

Suited to track racing, endurance racing, track days, or spirited street use.