BMW Z4 30i High Performance Heat Exchanger - Dinan - 2019-2026. A direct-fit upgrade that improves charge cooling so your Z4 delivers consistent performance when driven hard.

The OE coolant-sharing system works but can be overrun as heat and power rise. Dinan counters with a 45mm core (vs. 26.75mm stock) and full-size end tanks, yielding 68% more heat-transfer area and greater thermal mass. Dinan testing recorded an average 8.7°C drop in charge temps, with peaks near 12°C over 30 successive WOT pulls—helping curb heat soak and preserve repeatable power on your G29 Z4 30i.

Features

• Direct-fit replacement; no modifications required
• 45mm core vs. 26.75mm OEM
• 68% more cooling surface area and volume
• Bar-and-plate, TIG-welded aluminum construction

Questions about fitment or goals? Call our specialists. Installation and customization are available at our Austin, Texas and Los Angeles, California locations: 512-982-9393 (TX) or 562-981-6800 (CA).

Buying multiple items? Contact us for potential shipping discounts. We install on premises at both locations.

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