Dinan  |  SKU: #D780-0003

Dinan High Performance Heat Exchanger BMW M240i | M340i | M440i | M440i | 230i | 330i | 330i | Toyota GR Supra 2019-2024



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 12? 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 8.7° C reduction in charge air temps with a maximum reduction of nearly 12° C over 30 successive WOT pulls
  • General improvement to the efficiency of the thermal management system, inclusive of engine cooling
  • 45mm thick Dinan core vs. 26.75mm thick stock cooler core
  • 68% more cooling surface area and volume than stock
  • Reduces the tendency to heat soak / go in to limp mode
  • Durable bar and plate design that is less susceptible to damage from road debris
  • Pressure tested, 100% TIG welded, Aluminum construction
  • Direct fit replacement with no modifications required
Install Instructions : Fitments :
  • BMW G42 M240i | xDrive B58 2022-2024
  • BMW G20 M340i | xDrive B58 2019-2024
  • BMW G22/G23/G26 M440i | xDrive B58 2021-2024
  • BMW G29 Z4 M40i | sDrive M40i B58 2020-2024
  • BMW G42 230i | xDrive B46/B48 2022-2024
  • BMW G20/G21 330i | xDrive B46/B48 2019-2024
  • BMW G22/G23/G26 430i | xDrive B46/B48 2021-2024
  • BMW Z4 sDrive30i B46/B48 2019-2024
  • Toyota A90/A91 GR Supra B58 2020-2024
  • Toyota A90 GR Supra B48 2021-2024

Delivery & Shipping

  • This item is shipped directly from our manufacturer and/or distributor, and may take 3-5 business days for dispatch. Tracking information will be provided once shipped.