A90 Supra / BMW G-Series High-Performance Auxiliary Radiator
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A90 Supra / BMW G-Series High-Performance Auxiliary Radiator
Keep your engine cool even when the track gets brutal with the CSF A90 Supra / BMW G-Series High-Performance Auxiliary Radiator. This is not just another cooler. By adding extra surface area and improving airflow, it keeps your turbocharged 3-liter L6 running at optimal temperatures, letting you push harder, run longer, and stay consistent lap after lap. Whether you are hammering through corners, waiting in staging lanes, or tackling canyon roads, your engine stays calm, responsive, and performing like it should.
Every detail of this auxiliary radiator is engineered with purpose. CSF rethought the rock guard to maximize airflow while still blocking rocks and debris. Wind tunnel tested, CNC machined, and plug-and-play ready, it keeps installation simple and efficient. This radiator has been validated by CSF’s global R&D partners, including leading time attack teams, tuners, and turbo kit manufacturers, so you know it performs when the stakes are high.
Precision Engineered Design
2-row 42mm ultra-high performance core with 6.5mm tall multi-louvered fins using CSF exclusive B-Tube technology. 100% all aluminum construction TIG welded for durability. CNC machined mounting brackets with OEM style quick connect inlet and outlet fittings. Detachable aluminum rock guard designed for maximum airflow and protection. Finished in thermal black protective coating.
Configuration Options
Fits left and right side of the vehicle with drop-in fit. No modifications required. Designed exclusively for CSF auxiliary radiator applications.
Exhaust Tips & Customization
N/A
Production & Lead Time
Made to order with quality prioritized over speed. Expected lead time 3 to 4 weeks. Comes complete with mounting hardware and instructions.
Fitment
| Year Range | Make | Chassis Code | Model | Trim | Engine / Trans / Etc | Notes |
|---|---|---|---|---|---|---|
| 2023-2025 | BMW | G42 | M240i | - | Turbocharged 3L L6 | - |
| 2022-2025 | BMW | G42 | M240i xDrive | - | Turbocharged 3L L6 | - |
| 2020-2025 | BMW | G2X | M340i | - | Turbocharged 3L L6 | - |
| 2020-2025 | BMW | G2X | M340i xDrive | - | Turbocharged 3L L6 | - |
| 2021-2025 | BMW | G2X | M440i | - | Turbocharged 3L L6 | - |
| 2024-2025 | BMW | G2X | M440i Gran Coupe | - | Turbocharged 3L L6 | - |
| 2021-2025 | BMW | G2X | M440i xDrive | - | Turbocharged 3L L6 | - |
| 2024-2025 | BMW | G2X | M440i xDrive Gran Coupe | - | Turbocharged 3L L6 | - |
| 2019-2022 | BMW | G29 | Z4 | M40i | Turbocharged 3L L6 | - |
| 2019-2022 | BMW | G29 | Z4 | sDrive30i | Turbocharged 2L L4 | - |
| 2024 | Toyota | A90/A91 | GR Supra | 45th Anniversary Edition | Turbocharged 3L L6 | - |
| 2023 | Toyota | A90/A91 | GR Supra | A91-MT Edition | Turbocharged 3L L6 | - |
| 2020-2025 | Toyota | A90/A91 | GR Supra | - | Turbocharged 3L L6 | - |
| 2023-2025 | Toyota | A90/A91 | GR Supra | Premium | Turbocharged 3L L6 | - |
| 2024 | Toyota | A90/A91 | GR Supra | Premium 45th Anniversary Edition | Turbocharged 3L L6 | - |
- Improves engine cooling under high load
- Maximizes airflow to the radiator core
- Detachable aluminum rock guard protects from debris
- Plug-and-play installation with OEM style fittings
- Proven in wind tunnel testing and motorsports applications
- CNC machined and TIG welded for durability
- Thermal black coating protects against corrosion
- Fits both sides of the vehicle for balanced cooling
NOTE: OFF ROAD USE ONLY
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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Shipping Information
Orders take 24–48 hours to process once placed. Made-to-order items begin production after processing, while in-stock items are prepped, packaged, and ship within 3–4 days from our Oceanside, CA location (please allow extra time for packages to arrive during high-volume periods). Some items may be backordered—if so, we’ll email you with status and options. Freight items such as wheels, exhausts, trunks, and hoods require additional handling time and may ship separately.
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Customer Support
Real BMW-savvy humans here. We’re available Mon–Fri, 10am–5pm PT by email and phone/text for install questions, fitment help, or order updates. Send your year/model/trim (VIN if handy) and we’ll point you to the right parts fast.
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FAQ’s
Quick answers to the most common questions: fitment & compatibility, order changes/cancellations, build & lead times, international shipping & duties, and returns/exchanges. Start there for instant clarity—then reach out if you still need a hand.
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Contact Us
Need help choosing parts or tracking an order? Send an email to our support team, support@cencalmotorsport.com
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Fitment guarantee
Engineered for your BMW. Guarantee applies with professional installation — if it doesn’t fit, we fix it.
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Talk to real enthusiasts. Our team answers every email same business day (Mon–Fri, 9AM–5PM PST) so you’re never left hanging when it comes to your build.
About Us
What started as a group of BMW enthusiasts tired of overpriced parts and limited options is now a brand trusted by thousands of owners nationwide.
We designed our own product lines from the ground up and built the production infrastructure to make them happen. No middlemen, no compromises. Just the parts we actually wanted on our own builds.
Now we operate out of Oceanside, California, engineering valved exhaust systems, carbon fiber, forged wheels, front-mount intakes, and more. Everything is designed in-house, tested on real platforms, and stocked locally for fast shipping.
This is just the beginning.