CSF BMW B58/B48 Front Mount Triple-Pass Heat Exchanger — Fits 2016-2018 BMW 340i/440i

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Ultimate Cooling for BMW B58/B48 Engines

Take your BMW's cooling system to the next level with the CSF Front Mount Triple-Pass Heat Exchanger. Designed specifically for the B58 and B48 platforms, this high-performance unit replaces the restrictive OEM 1-row heat exchanger with a massive 2-row core. By utilizing CSF’s industry-leading B-Tube technology, this heat exchanger provides significantly improved surface area and thermal dissipation without requiring modifications to your factory housing.

Advanced Triple-Pass Design

• Triple-Pass Flow: Coolant circulates through the core three times for maximum heat transfer before returning to the manifold charge cooler.
• B-Tube Technology: Increases heat dissipation efficiency by 15% compared to standard oval-tube designs.
• Direct Fit: Engineered to fit perfectly within the OEM cooling system housing.
• Durable Finish: Includes a protective rock guard and a sleek black finish for long-lasting durability.

The OEM cooling system often struggles under high-boost conditions or aggressive driving. The CSF triple-pass design ensures that your intake air temperatures stay as low as possible, preventing heat soak and maintaining consistent power output during spirited driving or track sessions. This is the definitive cooling upgrade for any B58 or B48 enthusiast looking for reliability and performance. GGCRACING is your trusted source for premium CSF cooling solutions.