Rvng G series B46/B48/B58 Gen 2/3/Supra Upgraded Heat Exchanger
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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 and 3rd 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.
Built for a straightforward installation, the housing and tank profile is designed to sit neatly within the factory OEM location while maintaining a clean, performance-focused finish. Billet transmission cooler mounts and a full metal debris guard add durability without restricting essential airflow, making this setup a strong choice for enthusiasts exploring car modification ideas and premium components from trusted aftermarket car brands.
For another practical addition to your performance build, check out the RVNG B58 S58 Intake Manifold Block Off Cap, designed to provide a precise and secure solution for compatible engine setups. See more about RVNG RaceWorks by following us on Instagram, where you can explore custom builds, performance-focused vehicles, product highlights, and inspiration for your next project.
But please keep in mind cutting is required in order to fit this size core.
BMW G-Series Platforms
2019–2022 BMW G20/G21 330i
• 2.0L Turbocharged 4-Cylinder
2019–2022 BMW G20/G21 330i xDrive
• 2.0L Turbocharged 4-Cylinder
2021–2025 BMW G22/G23 430i
• 2.0L Turbocharged 4-Cylinder
2022–2025 BMW G26 430i Gran Coupe
• 2.0L Turbocharged 4-Cylinder
2021–2025 BMW G22/G23 430i xDrive
• 2.0L Turbocharged 4-Cylinder
2022–2025 BMW G26 430i xDrive Gran Coupe
• 2.0L Turbocharged 4-Cylinder
BMW G42 — 2-Series
2023–2025 BMW G42 M240i
• 3.0L Turbocharged Inline-6
2022–2025 BMW G42 M240i xDrive
• 3.0L Turbocharged Inline-6
BMW G20 / G21 — 3-Series (B58)
2020–2025 BMW G20/G21 M340i
• 3.0L Turbocharged Inline-6
2020–2025 BMW G20/G21 M340i xDrive
• 3.0L Turbocharged Inline-6
BMW G22 / G23 / G26 — 4-Series (B58)
2021–2025 BMW G22/G23 M440i
• 3.0L Turbocharged Inline-6
2024–2025 BMW G26 M440i Gran Coupe
• 3.0L Turbocharged Inline-6
2021–2025 BMW G22/G23 M440i xDrive
• 3.0L Turbocharged Inline-6
2022–2025 BMW G26 M440i xDrive Gran Coupe
• 3.0L Turbocharged Inline-6
BMW G29 — Z4 Roadster
2019–2022 BMW G29 Z4 (2.0L)
• Turbocharged 4-Cylinder
2019–2022 BMW G29 Z4 (3.0L)
• Turbocharged Inline-6
Toyota GR Supra — A90 / A91
2024 GR Supra — 45th Anniversary Edition (3.0L)
• Turbocharged Inline-6
2023 GR Supra — A91-MT Edition (3.0L)
• Turbocharged Inline-6
2020–2025 GR Supra (3.0L Models)
• Turbocharged Inline-6
2023–2025 GR Supra Premium (3.0L)
• Turbocharged Inline-6
2024 GR Supra Premium — 45th Anniversary Edition (3.0L)
• Turbocharged Inline-6
2021–2022 GR Supra (2.0L)
• Turbocharged 4-Cylinder
DOES NOT FIT 540i
Shipping Information
Orders are processed same or next business day. Shipping times vary depending on the product, shipping service, and whether freight shipping is required. While we ensure all inventory levels are current and accurate, they can change due to logistics and inventory feeds. Standard shipping typically takes 3-7 business days, but some items may require additional time depending on their origin. Feel free to call us anytime for the latest status of your order.
