Turner Motorsport N55/N20 Stepped Intercooler
This product was last offered at the strikethrough price on
08-09-2025

Product Details
It's a basic principle of high performance: "A cool engine is a happy engine." In addition to reducing engine temperatures, cooler air is denser. An engine works as a glorified air compressor. Denser air means a larger mass of air and fuel in the same intake volume, resulting in more power. Turner Motorsport has developed an intercooler upgrade that is far superior to the stock unit. Constructed from cast aluminum with a bar and plate design, this intercooler increases both cross sectional area and frontal surface area by 56%.
The temperature from the inlet side to the outlet side is decreased by 45 degrees, showing one and a half times the temperature differential of the original part. Pressure decrease is also minimized, eliminating restriction and reducing the workload of the turbocharger. The stepped design increases volume and surface are in a limited space by adding an additional smaller core at the top of the intercooler. As a bolt-in upgrade, expect dyno-proven gains of 18 wheel horsepower and 10 lb/ft of torque. With a tune and supporting modifications, further gains are possible, up to 36 horsepower and 28 lb/ft of torque. All of this with an intercooler that still weighs under 20 lbs.
The attractive black finish is stealthy and easy to clean, while the etched "Turner" logos on the front and bottom of the intercooler add just the right amount of flash. If you're looking for the ultimate upgrade for your turbo BMW's cooling system, look no further than the Turner Motorsport Stepped Intercooler.
- Cast aluminum construction
- Bar and plate design
- 56% increase in frontal surface area & cross sectional area
- Decrease in temperature of 45 degrees from inlet side to outlet side (95 degree drop stock on outlet side vs. 140 degree drop on Turner outlet side)
- Significantly less restriction (pressure drop of consistently 0.75 psi vs. 1.5-2.5 psi stock)
- +18HP/10TQ (+36HP/28TQ with tune and supporting mods)
- Weighs under 20 lbs.
- Overall size: 520mm wide, 210mm tall
- Mounting hardware included
Upgrade to the following OE Intercoolers: 17517600531, 17517600530, 17517618809
- 17517600531
- 17517600530
- 17517618809
This Part Fits the Following Vehicles
Make | Model | Submodel | Engine | Special Fitment Notes |
---|---|---|---|---|
BMW | F22 | 228i | N20 2.0L | Use vehicle selector to confirm fitment |
BMW | F22 | 228i xDrive | N20 2.0L | Use vehicle selector to confirm fitment |
BMW | F22 | M235i | N55 3.0L | Use vehicle selector to confirm fitment |
BMW | F22 | M235i xDrive | N55 3.0L | Use vehicle selector to confirm fitment |
BMW | F23 | 228i | N20 2.0L | Use vehicle selector to confirm fitment |
BMW | F23 | 228i xDrive | N20 2.0L | Use vehicle selector to confirm fitment |
BMW | F23 | M235i | N55 3.0L | Use vehicle selector to confirm fitment |
BMW | F23 | M235i xDrive | N55 3.0L | Use vehicle selector to confirm fitment |
BMW | F30 | 320i | N20 2.0L | Use vehicle selector to confirm fitment |
BMW | F30 | 320i xDrive | N20 2.0L | Use vehicle selector to confirm fitment |
BMW | F30 | 328i | N20 2.0L | Use vehicle selector to confirm fitment |
BMW | F30 | 328i xDrive | N20 2.0L | Use vehicle selector to confirm fitment |
BMW | F30 | 335i | N55 3.0L | Use vehicle selector to confirm fitment |
BMW | F30 | 335i xDrive | N55 3.0L | Use vehicle selector to confirm fitment |
BMW | F31 | 328i | N20 2.0L | Use vehicle selector to confirm fitment |
BMW | F31 | 328i xDrive | N20 2.0L | Use vehicle selector to confirm fitment |
BMW | F32 | 428i | N20 2.0L | Use vehicle selector to confirm fitment |
BMW | F32 | 428i xDrive | N20 2.0L | Use vehicle selector to confirm fitment |
BMW | F32 | 435i | N55 3.0L | Use vehicle selector to confirm fitment |
BMW | F32 | 435i xDrive | N55 3.0L | Use vehicle selector to confirm fitment |
BMW | F33 | 428i | N20 2.0L | Use vehicle selector to confirm fitment |
BMW | F33 | 428i xDrive | N20 2.0L | Use vehicle selector to confirm fitment |
BMW | F33 | 435i | N55 3.0L | Use vehicle selector to confirm fitment |
BMW | F33 | 435i xDrive | N55 3.0L | Use vehicle selector to confirm fitment |
BMW | F34 | 328i | N20 2.0L | Use vehicle selector to confirm fitment |
BMW | F34 | 328i xDrive | N20 2.0L | Use vehicle selector to confirm fitment |
BMW | F34 | 335i xDrive | N55 3.0L | Use vehicle selector to confirm fitment |
BMW | F36 | 428i | N20 2.0L | Use vehicle selector to confirm fitment |
BMW | F36 | 428i xDrive | N20 2.0L | Use vehicle selector to confirm fitment |
BMW | F36 | 435i | N55 3.0L | Use vehicle selector to confirm fitment |
BMW | F36 | 435i xDrive | N55 3.0L | Use vehicle selector to confirm fitment |
BMW | F87 | M2 | N55 3.0L | Use vehicle selector to confirm fitment |
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ECS Tuning will accept returns for unused products within 90 days of the ship date for a refund to the original payment method used. The customer is responsible for the return shipping costs and fees. If selecting to use a prepaid shipping label, the shipping cost will be deducted from the total refunded amount. All new/unused products must be new, unused and must be in the original packaging, including labeling, manuals, hardware, etc. Special order parts are non-refundable.
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Any domestic orders that are returned to ECS Tuning as refused by receiver or non-deliverable will be subject to a return handling fee and will be processed as a return in compliance with our standard return policy, including a 15% restocking fee.
Any international orders that are refused at the time of delivery will be subject to carrier abandonment of the package, at which time the ordered products would be discarded by the carrier. The customer will not be refunded for the value of the order and the discarded products are no longer retrievable.
Return Process
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Please note: Refunds will be processed to the original payment method used on the order or to an in store credit, respective to the type of return that is made as well as any pre-existing arrangements with an ECS Tuning Customer Service Representative. In the event that multiple forms of payment were used, we will refund the value to an in store credit. In the event that a return label is provided, these charges may be deducted from the total refund you receive.
Original shipping costs are non-refundable and the buyer is responsible for return shipping charges. ECS Tuning will not accept COD deliveries.
All in store credit balances will expire after one year from the original purchase date.
Shipping Policy
Free Shipping On Orders $49 & Up
Items marked with a 'Free Shipping On Orders $49 and Up' logo may qualify for free standard economy ground shipping to the contiguous United States (48 states) for most orders with a value greater or equal to $49.00 USD. Oversized products and direct ship products are excluded from this offer unless otherwise noted.
Free Shipping
Items marked as 'Free Shipping' may qualify for free standard economy ground shipping to the contiguous United States (48 states). Oversized products and direct ship products are excluded from this offer unless otherwise noted.
The policies listed above are subject to change at any time without notice.
Lifetime Replacement
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Why You Should Shop From ECS Tuning
ECS Tuning stands out as more than an automotive parts supplier-it's a vibrant community fueled by a shared passion for cars. Born from the enthusiasm of car lovers, we offer an unmatched understanding and commitment to the automotive world, providing high-quality parts and accessories sourced from our own experiences. Our selection is meticulously crafted to meet the highest standards of performance, quality, and design, catering to both the latest trends and classic styles.
Our distinct advantage lies in our passionate team and comprehensive support, offering expert advice and seamless service from selection to installation. Shopping with ECS brings exclusive perks, including our Lifetime Replacement Guarantee and free shipping on orders over $49, enhancing the value of every purchase. As a central hub for car enthusiasts, ECS Tuning fosters a rich community where ideas and experiences flourish, transforming us from a mere supplier into a platform where automotive dreams come to life.
Cancellation Policy
At ECS Tuning, we understand that plans can change. That's why we offer a flexible cancellation policy for our customers. You may cancel your order at any time before you receive the shipment confirmation. This policy is designed to provide you with peace of mind and the flexibility to make adjustments to your purchases as needed. Should you decide to cancel your order, simply reach out to our customer service team, and we will assist you with the process swiftly and efficiently.
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