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CSF 11-16 BMW 135i(X) 5 Door F20 / M135i(X) 3 Door F21 Race-Spec Oil Cooler

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$399.00
$399.00
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Utilizing CSF's AC Condenser technology, their innovative dual-core in-series system features an additional 5 rows of super-high pressure multi-channel micro-tubes on the rear side of the oil cooler. The high performance tube spec, along with the high-efficiency multi-louvered fin design allows for maximum surface area contact and an approximate 40% increase in heat rejection. The High-Performance Race-Spec Oil Cooler directly replaces the factory unit, easily bringing engine oil temperatures down to a consistent and manageable level, even under extreme & extensive driving conditions.

  • "Drop-In Fit" Requiring No Modifications to Install - Accepts All Attaching OEM Components Including Oil-Line Connections, Mounting Brackets and Shroud/Ducting
  • Requires Additional Half Quart for Proper Fill-up During Installation (OEM Cooler: 7 Qts./ CSF's Upgrade Race-Spec N55 Oil Cooler: 7.5 Quarts)
  • Secondary In-Series Backside Cooler has an Additional 5 Rows of Cooling for a 40% Increase in Heat Rejection
  • Made with CSF's AC Condenser Technology Using a 1-Row Super-High Pressure 26mm Multi-Channel Microtube
  • World's 1st and Only True "Plug-And-Play" Upgraded Engine Oil Cooler for the BMW N55 Engine
  • Converted to a Single-Pass Design with High Pressure Return Line for Optimal Flow
  • High-Density Multi-Louvered Fin Design for Maximum Surface Area Contact
  • Track Tested and Proven by Hittman Racing's M235iR Endurance Race Car
  • Innovative 2-Core In-Series System

This Part Fits:

Year Make Model Submodel
2012-2015 BMW 335i Base
2014-2016 BMW 335i GT xDrive Base
2012-2015 BMW 335i xDrive Base
2014-2016 BMW 435i Base
2015-2016 BMW 435i Gran Coupe Base
2014-2016 BMW 435i xDrive Base
2015-2016 BMW 435i xDrive Gran Coupe Base
2013-2015 BMW ActiveHybrid 3 Base
2014-2016 BMW M235i Base
2015-2016 BMW M235i xDrive Base
CSF 11-16 BMW 135i(X) 5 Door F20 / M135i(X) 3 Door F21 Race-Spec Oil Cooler

$399.00

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    Seattle, Washington

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    Austin, Texas

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    London, England

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    The product I bought exceeded my expectations. Top-notch quality, thoughtful design, and it came beautifully packaged.

    Sam Davis
    San Francisco, California

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    Have ordered multiple times, always received exactly what was described. Products are genuine and fully functional.

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    Denver, Colorado

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    Boston, Massachusetts

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    Checkout was quick and straightforward. My order confirmation came through instantly, and everything arrived exactly as expected.

    Morgan Lee
    Portland, Oregon

  • Great value

    Really pleased with the quality for the price. The product felt premium, worked perfectly out of the box, and was well packaged.

    Jamie Carter
    Manchester, England

Can I return a part after it has been installed?

Generally, installed or used performance parts cannot be returned. We strongly recommend verifying vehicle fitment and inspecting the product before installation.

Can I cancel my order after it has been placed?

We begin processing orders as quickly as possible. If you need to cancel, contact us immediately. Once an order has entered fulfillment, been submitted to a supplier, or shipped, cancellation may no longer be possible.

Will this part fit my vehicle?

Fitment varies by year, make, model, trim, engine, and drivetrain. Use our vehicle fitment information to confirm compatibility. If you're unsure, contact us with your VIN and we'll help verify fitment before you order.

How do I know if this is the right upgrade for my build?

Not every upgrade makes sense for every vehicle or build. Tell us your vehicle, current modifications, and performance goals, and we'll help determine whether this product is a good fit.

Are the products you sell authentic?

Yes. We source products through established manufacturers and authorized distribution channels. We do not sell counterfeit or imitation performance parts.

Is professional installation recommended?

For most performance components, yes. Proper installation is critical for fitment, reliability, and performance. Some products may also require specialized tools, programming, tuning, or additional supporting modifications.