Dinan 19-26 BMW 230i/M240i/330i/M340i/430i/M440i (G20/G22/G26/G42) High Performance Heat Exchanger

The OE thermal management system for the B4x/B58 G-chassis BMW and Toyota GR Supra offers an improved formula from prior generations. With a setup where engine coolant is also re-routed through the heat exchanger, the system effectively assists in overall engine cooling as well as charge cooling. However, like its predecessors, it has room for improvement as it can be overwhelmed when the system is taxed aggressively or as power levels are increased. Once overburdened, this results in the undesirable outcome of power being diminished. Avoidance of this unwelcome scenario can be attained though with a Dinan heat exchanger that improves the overall thermal management system so everything runs cooler and more efficiently while being budget friendly.

The Dinan B4x/B58 heat exchanger for the BMW G2x/G4x and Toyota A9x Supra assists in improving overall charge cooling using a more robust core (45mm thick Dinan core vs. 26.75mm thick OEM core) that wields 68% more heat transfer surface area for improved cooling capacity. The significant increase in core thickness and full-size end tanks contribute to the overall thermal mass (ability to absorb, store, and release heat) improvement beyond the OEM setup. With up to a nearly 12º reduction in charge air temps recorded over stock the Dinan heat exchanger is ready, and able, to assist in extending your vehicles ability to deliver maximum performance time and time again for your driving enjoyment!

Features

• Average of 8.7º C reduction in charge air temps with a maximum reduction of nearly 12º C over 30 successive WOT pulls
• General improvement to the efficiency of the thermal management system, inclusive of engine cooling
• Durable bar and plate design that is less susceptible to damage from road debris
• 45mm thick Dinan core vs. 26.75mm thick stock cooler core
• Pressure tested, 100% TIG welded, Aluminum construction
• Reduces the tendency to heat soak / go in to limp mode
• Direct fit replacement with no modifications required
• 68% more cooling surface area and volume than stock

Vehicle Fitment

Please verify exact fitment (engine, submodel, and trim) before purchasing.

Manufacturer Part Number: D780-0003

Images are for illustration purposes only; actual product may vary.

Emissions Note: This product is not CARB approved. It is intended for closed-course competition or off-road use only in California and other CARB states and is not legal for use on pollution-controlled vehicles in those states.

⚠ WARNING: This product can expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.