Dinan High Performance Heat Exchanger for BMW M2 / M3 / M4 2015-2021
The Dinan High-Performance Heat Exchanger for the F8x (S55) platform is designed to combat heat soak and enhance engine efficiency by significantly reducing intake air temperatures (IAT). Heat soak in the stock system often forces the ECU to reduce power output after just a few high-performance pulls. Dinan’s upgraded heat exchanger addresses this issue with a larger, more effective unit that maintains optimal IATs even during prolonged, intense driving sessions.
Key Benefits:
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Increased Power: Gains of +10 HP and +20 lb-ft of torque on the stock tune, thanks to cooler intake air.
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Enhanced Cooling Capacity: With 60% more volume, 19% more face area, and a 40mm thickness (compared to the stock 24mm), the heat exchanger dramatically reduces water temperatures to the intercooler.
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Efficient Heat Management: Reduces water temperatures by an average of 9°C, leading to a 6°C drop in intake air temps across the RPM range.
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Optimized Airflow Balance: While thicker than stock, the 40mm size was chosen to avoid obstructing airflow to the main radiator, preserving engine cooling efficiency.
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Durable and Track-Tested: Rubber-mounted for vibration isolation and rigorously tested to ensure consistent performance under extreme conditions.
This heat exchanger upgrade is an ideal solution for F8x owners seeking increased power, reduced heat soak, and better overall reliability in demanding driving conditions.
| Brand |
Dinan |
| Dinan Point Value |
2 |
| Emission Code |
7 |
| Height |
9 |
| Labor Time (Hours) |
3.5 |
| Length |
29 |
| Max HP Gain |
10 |
| Max Torque (lb-ft) Gain |
20 |
| Product Type |
Heat Exchanger |
| Weight |
14 |
| Width |
17 |
| UPC |
813725023380 |
| Part Number |
D780-0001A |
Emissions:
This part is legal under the provisions of EPA’s Tampering Policy dated November 23rd, 2020. The company has reasonable basis (test results) to verify that this product allows the vehicle to operate within legal emissions standards and is therefore legal to be sold for on-street use in all states that accept the legal provisions of the Clean Air Act and the EPA Tampering Policy. This product is NOT LEGAL FOR SALE OR USE IN THE STATE OF CALIFORNIA. Testing with the California Air Resources Board, in order to achieve 50-state compliance, is pending with CARB. Once testing is complete with California, and an E.O. number is issued, this product will be updated to 50-state legal status.
Fitment Chart:
| Make |
Model |
Year |
BMW
|
M2 Competition
|
2019-2021
|
|
BMW |
M3 |
2015-2018 |
|
BMW |
M4 |
2015-2020 |
|
BMW |
M4 CS |
2019-2020 |
|
BMW |
M4 GTS |
2016 |
⚠️ California Proposition 65 Warning:
This product may expose you to chemicals known to the State of California
to cause cancer or reproductive harm.
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Project Incentives:
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We reward enthusiasts who trust us with their major projects. Use these tiered codes at checkout to apply instant savings to your order:
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• AH630 — $630 OFF $9000+
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Fitment Guarantee:
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Avoid the headache of the wrong part. If you are unsure about compatibility, contact us first. If we verify the fitment for your vehicle via email and it doesn’t fit, we will handle the exchange at no cost to you.
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Leveraging our massive supply chain, we secure hard-to-find components that other shops can't access. Whether it's a standard upgrade or a custom exotic application, we have the network to get it to your door.
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Direct Consultation:
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To qualify for our Fitment Guarantee, please email your vehicle’s Year, Make, Model, and any existing modifications to:
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Our experts will review your specifications and provide written confirmation for your build.
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For tracking updates or status inquiries on existing orders, please reach out via our Contact Form. Having your order number ready will allow us to provide the most efficient update.
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Secure Shipping:
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We offer FREE Ground Shipping within the 48 contiguous United States. Most in-stock orders process within 48 hours. For your security, high-value performance parts require a signature upon delivery to ensure they reach you safely.
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Transit Protection:
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Please inspect your order immediately. Damage must be reported within 48 hours. For freight/LTL items, if you cannot inspect the contents immediately, please write "Subject to Inspection" on the delivery receipt before signing.
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Flexible Returns:
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Unused items in brand-new, original packaging can be returned within 30 days. While standard refunds incur a 25% restocking fee, we will waive this fee entirely if you choose store credit or an exchange for your next upgrade.
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Exclusions:
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To ensure every customer receives brand-new, untampered components, parts that have been installed, modified, or used are non-returnable. Custom builds, special orders, and wheel/tire packages are considered final sale.
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Need assistance? Reach out via our
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Fitment Guarantee
Fitment guides and tools are helpful—but your car is unique! Some trims and options aren’t always listed, so if you want 100% confidence that a part will fit, our team is happy to double-check for you. We take the guesswork out of your purchase by standing behind our expertise.
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Verify Your Build:
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If this product doesn't list your specific vehicle data, simply reach out to support@autohousesupply.com. We will manually verify compatibility for you.
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Our Promise:
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When we confirm a fitment in writing and it doesn’t work for your application, we cover the return shipping and exchange it at no cost to you.
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