DINAN Heat Exchanger - BMW B48/B58 2/3.0L & GR Supra (19-24)

DINAN Heat Exchanger - BMW B48/B58 2/3.0L & GR Supra (19-24)

The DINAN High-Performance Heat Exchanger is engineered to strengthen the thermal management system of the B46 / B48 / B58 powerplants found in BMW G-chassis vehicles and the Toyota GR Supra. While the factory setup already integrates engine-coolant routing through the charge-air circuit for improved efficiency, it can become heat-soaked during extended spirited driving or when power levels are raised. DINAN’s upgraded heat exchanger resolves this by dramatically increasing cooling capacity, helping your vehicle maintain consistent performance run after run.

At the core of this upgrade is a 45 mm-thick bar-and-plate core—a substantial jump from the OEM’s 26.75 mm unit—offering 68% more surface area for heat transfer. With its larger thermal mass, the DINAN exchanger absorbs and dissipates heat far more effectively, reducing charge-air temperatures by up to 12 °C under repeated wide-open-throttle pulls. The result: improved reliability, sustained power output, and peace of mind even under demanding conditions.

Performance Benefits:

• Average 8.7 °C reduction in charge-air temps; maximum drop ≈ 12 °C

• 45 mm DINAN core vs 26.75 mm stock – 68% increase in cooling surface area

• Reduces heat soak and the likelihood of limp-mode activation

• Enhances overall thermal system efficiency, including engine cooling

• Durable bar-and-plate construction for superior impact resistance

• Maintains consistent power during repeated high-load operation

Technical Features:

• 100% TIG-welded aluminum construction for maximum strength and heat dissipation

• Pressure-tested to ensure leak-free reliability

• Full-size end tanks for increased thermal mass and smoother flow

• Direct bolt-on fitment – no modifications required

• OEM-style connections retain factory coolant routing and mounting points

This part fits:

SKU: D780-0003