BMW Z4 M40i High Performance Heat Exchanger - Dinan - 2019-2026. A direct-fit upgrade engineered to improve charge cooling and maintain consistent performance on your G29, B58-powered roadster.

The factory thermal management routes engine coolant through the heat exchanger, but it can be overtaxed under hard use or increased power. Dinan addresses this with a 45mm bar-and-plate core (vs. 26.75mm OEM) and full-size end tanks, boosting thermal mass and cooling capacity. Testing shows an average 8.7º C reduction in charge temps, with nearly 12º C at peak over 30 successive WOT pulls, while also aiding overall engine cooling efficiency.

Features

• 45mm Dinan core vs. 26.75mm stock
• Average 8.7º C and up to nearly 12º C charge temp drop
• 68% more heat transfer surface area than OEM
• Durable bar-and-plate, 100% TIG-welded, pressure tested aluminum
• Direct-fit replacement; no modifications required
• Helps reduce heat soak and limp-mode tendency

Have questions or want this installed? Call our team; we offer installation and customization at our Austin, TX and Los Angeles, CA area locations: 512-982-9393 (TX), 562-981-6800 (CA). Thinking about multiple items? Contact us for possible shipping discounts. We install on premises at both locations.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov