Rvng G series B46/B48/B58 Gen 2/3/Supra Upgraded Heat Exchanger

$549.99 USD $599.99 USD

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Description

(CHECK CHASIS/MODEL COMPATIBILITY BELOW DESCRIPTION)

YES IT WORKS WITH B46,B48, AND B58

RVNG RaceWorks Why Upgrading the B58 Cooling System Is Essential?

The 2nd-generation B58 cooling layout has one major weakness: the factory liquid-to-air charge-air cooler becomes overwhelmed fast. Once the coolant in the charge-air system heat-soaks, intake air temperatures climb rapidly, and the ECU responds by pulling power. Push the car a little harder, and it eventually falls straight into limp mode.

This isn’t just something people talk about online — it’s a real limitation we’ve seen again and again. At competitive track events, especially in warm weather, modified B58 cars struggle to make more than a couple of laps without temperatures skyrocketing. Drivers are forced into cooldown laps, early pit stops, or resorting to spraying their heat exchangers with water just to get temps back under control.

For anyone increasing boost, upgrading the turbo, or pushing the car beyond stock power levels, the factory single-row heat exchanger simply isn’t designed to keep up. The OEM unit is only 25 mm thick and has limited coolant capacity, which means it saturates quickly and cannot shed heat efficiently during repeated pulls or extended track sessions.

RVNG’s high-efficiency heat exchanger solves this by stepping up to a massive 68 mm dual-row core — over 2.5× the thickness and dramatically more coolant volume and surface area. Our optimized core geometry increases heat transfer, reduces pressure drop, and delivers stable IATs even when the car is pushed hard.

To make installation seamless, we use a housing and tank profile that fits cleanly within the OEM location, while incorporating billet transmission cooler mounts and a full metal debris guard designed for both protection and airflow. Everything bolts in like stock, with no cutting, no modification, and no compatibility issues — a true drop-in upgrade engineered for the people who actually drive their cars the way they were meant to be driven.

BMW G-Series Platforms

2019–2022 BMW G20/G21 330i