High Performance Front-Mount Heat Exchanger BMW F22/F30/F32 – B48/B58

A direct bolt-on front-mount heat exchanger for F-Chassis BMWs with the B48 and B58 water-to-air intercooler system, replacing the thin single-row factory unit with a much thicker, multi-row core. It keeps charge-air temperatures stable under sustained boost, preventing the power drop and limp mode tuned cars hit when the OEM exchanger heat-soaks. Replaces OE Part No. 17118741830 Specifications Core size: 524mm (L) × 478mm (H) × 69mm (W) All-aluminium, high-efficiency multi-row core with multi-louvered fins CNC-machined OEM-style mounting pins and brackets Plug-and-play quick-connect coolant fittings Includes detachable front rock guard · direct bolt-on, no modification What it does Lowers intake temps, with a thicker multi-row core that rejects far more heat than the factory single-row unit. Prevents heat soak, holding temperatures stable across repeated acceleration runs without creep or power fade. Helps stop limp mode, since improved thermal stability prevents the ECU power reduction tuned B48/B58 cars suffer. Built for tuned cars, recommended for Stage 1, Stage 2, hybrid and upgraded-turbo setups. Build quality Full aluminium construction built to handle prolonged high-temperature operation, with CNC-machined mounting points for precise fitment and a detachable rock guard for frontal protection. Direct bolt-on using factory mounting points and coolant connections. Compatible Models 2 Series: 230i/M240i (F22/F23 incl. xDrive, 2017–2021) 3 Series: 330i/330e/340i (F30/F31/F34 incl. xDrive, 2016–2019) 4 Series: 430i/440i (F32/F33/F36 incl. xDrive, 2017–2020)