CTS Turbo F-series B48/B58 BMW 230i/330i/430i/M140i/M240i/340i/440i Heat Exchanger Upgrade

The CTS Turbo heat exchanger upgrade replaces the restrictive factory unit on B48 and B58-powered BMW F-series models. Designed for performance-focused workshops servicing M140i, M240i, 230i, 330i, 430i, 340i and 440i variants, this upgraded core delivers substantially improved heat rejection for the intercooler water circuit. Critical for tuned applications where sustained power demands overwhelm the standard heat exchanger, causing heat soak and diminished performance. Features increased core volume and optimised flow paths to maintain consistent intake temperatures under load. Essential preparation for ECU tuning and forced induction upgrades.