High-Performance Heat Exchanger / Chargecooler radiator for BMW G32 GT 630i, 630iX, 640i, 640iX models with B48 and B58 engines.
B48 / B58 engines feature an innovative cooling system with the intercooler built directly into the intake manifold. This setup is cooled by a separate, front-mounted water radiator, commonly referred to as a heat exchanger or chargecooler radiator. For stock or lightly tuned setups, the factory radiator performs well enough, so upgrading it may seem unnecessary. However, if you’re aiming for higher power levels with Stage 2 or Stage 3 tuning, or driving aggressively enough to cause heat soak in warm climates, upgrading to a high-performance heat exchanger can make a noticeable difference. This upgrade helps maintain low intake temperatures, enhancing combustion efficiency and supporting your engine’s long-term health.
Our high-performance heat exchanger provides an 85% increase in core water volume compared to the OEM radiator, maximizing heat transfer and significantly reducing air-charge temperatures. This added cooling capacity minimizes temperature fluctuations and prevents heat soak, even under the most demanding driving conditions. Built for long-lasting durability and reliable performance, it includes a specialized thermally conductive, anti-corrosive coating and advanced fin design that channels airflow efficiently, allowing cool air to flow freely and support effective cooling of surrounding components, including the main engine radiator.
Upgrade to the KPerformance heat exchanger and experience unparalleled cooling performance that keeps your vehicle running at its best, even in the toughest conditions.
FITS THESE BMW MODELS:
BMW 6 Series: G32 GT [2017-2023]
630i (190kw / 258hp) – B48
630iX (190kw / 258hp) – B48
640i MHT (245kw / 333hp) – B58
640iX MHT (245kw / 333hp) – B58
640i (250kw / 340hp) – B58
640iX (250kw / 340hp) – B58
Note: If your model is not listed here, look for it under another product. If you cannot find your model anywhere, contact us for assistance.
SPECIFICATION:
• Core width: 628 mm
• Core height: 518 mm
• Core depth: 51 mm
• Inlet diameter: 22 mm
• Outlet diameter: 22 mm
• Core capacity: 16.6 L
• Chargecooler weight: 6.6 kg
OEM reference part numbers: 17 11 2 671 573, 17112671573, 2671573, 17 11 8 484 638, 17118484638, 8484638, 17 11 8 619 621, 17118619621, 8619621, 17 11 7 933 871, 17117933871, 7933871, 17 11 8 664 919, 17118664919, 8664919