Race-Proven Cooling, Built Without Compromise

The do88 Performance Radiator for the BMW M3 E46 is engineered to keep coolant temperatures under control during the most demanding conditions. With a larger core, triple-pass design, and all-aluminium construction, it’s the ultimate upgrade for drivers who need uncompromising reliability and efficiency on road, track, or endurance events.

Why Upgrade to a do88 Radiator?

Increased Core Volume & Efficiency

17% larger core volume – 11,736 cm³ vs. 10,068 cm³ OEM
Triple-pass design – coolant is directed across the core three times for maximum heat transfer
Significantly reduces coolant temperatures compared to the stock plastic/aluminium hybrid unit

Built for Motorsport Conditions

Fully aluminium construction with uninterrupted TIG welds for strength and reliability
Eliminates fragile OEM plastic end tanks, preventing leaks and failures common in track use
Drop-in fitment with no cutting or modifications required

Enhanced Features for Serious Drivers

Includes new silicone hoses for a complete installation
Supplied with Bosch temperature sensor for factory integration
Built-in port for additional temp sensor (M12x1.5) – ideal for monitoring or aftermarket fan control
Pre-fabricated front brackets to mount a do88 auxiliary oil cooler

Key Features at a Glance

17% increase in core volume vs OEM
Triple-pass water flow design for superior cooling
All-aluminium construction, no plastic quick-connects
Bosch sensor + extra sensor take-off included
CNC-machined fittings and brackets
Supplied with new hoses
Prepared for additional do88 oil cooler fitment
Direct drop-in installation

Applications

BMW M3 E46 (2000–2006, S54 engine)

Why Choose do88?

do88 are Swedish cooling specialists trusted by enthusiasts and racers worldwide. Every product is developed with rigorous in-house testing, CFD design, and track validation to guarantee performance with no compromises. Whether you’re chasing lap times or simply looking for long-term reliability, do88 parts deliver.

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