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

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

## Details

- **Price:** 590.79 CAD
- **Vendor:** CSF
- **Type:** Oil Coolers

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 590.79 CAD | In stock |

## Images

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- Photo - out of package
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- User 2
- Photo - out of package
- Logo Image

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/csf-11-16-bmw-135ix-5-door-f20-m135ix-3-door-f21-race-spec-oil-cooler)
> Updated: 2026-07-05