The CSF Racing 7046 is an all-aluminum high-performance radiator for automatic-transmission BMW N54 and N55 turbo cars, including the 135i, 335i, E84 X1, and E89 Z4. It uses a 2-row 42mm dual core with CSF's B-Tube Technology and multi-louvered 6.5mm fins. It is a drop-in fit with CNC-machined quick-connect connections, an all-aluminum race-style drain plug, and a satin finish, and it accepts the OEM quick-connect hoses and fan shroud.
- Type: all-aluminum performance radiator (automatic)
- Core: 2-row, 42mm dual core, B-Tube Technology
- Fins: multi-louvered, 6.5mm fin height
- Engines: N54 / N55 turbo (3.0L L6; X1 and Z4 sDrive28i 2.0L)
- Fittings: CNC-machined quick-connect, accepts OEM hoses
- Drain: all-aluminum race-style drain plug
- Finish: satin
- Part number: 7046
Vehicle Applications
Direct fit on the following (automatic transmission):
- 2008 BMW 135i (E82/E88)
- 2009 BMW 135i (E82/E88)
- 2010 BMW 135i (E82/E88)
- 2011 BMW 135i (E82/E88)
- 2012 BMW 135i (E82/E88)
- 2013 BMW 135i (E82/E88)
- 2013 BMW 135is (E82/E88)
- 2007 BMW 335i (E9X)
- 2008 BMW 335i (E9X)
- 2009 BMW 335i (E9X)
- 2010 BMW 335i (E9X)
- 2011 BMW 335i (E9X)
- 2012 BMW 335i (E9X)
- 2013 BMW 335i (E9X)
- 2013 BMW X1 xDrive (E84)
- 2014 BMW X1 xDrive (E84)
- 2015 BMW X1 xDrive (E84)
- 2012 BMW Z4 sDrive28i (E89)
- 2013 BMW Z4 sDrive28i (E89)
- 2014 BMW Z4 sDrive28i (E89)
- 2015 BMW Z4 sDrive28i (E89)
- 2016 BMW Z4 sDrive28i (E89)
- 2009 BMW Z4 sDrive35i (E89)
- 2010 BMW Z4 sDrive35i (E89)
- 2011 BMW Z4 sDrive35i (E89)
- 2012 BMW Z4 sDrive35i (E89)
- 2013 BMW Z4 sDrive35i (E89)
- 2014 BMW Z4 sDrive35i (E89)
- 2015 BMW Z4 sDrive35i (E89)
- 2016 BMW Z4 sDrive35i (E89)
FAQ
What vehicles does the CSF Racing 7046 fit?
Automatic-transmission BMW 135i and 135is (2008-2013), 335i E9X (2007-2013), E84 X1 (2013-2015), and E89 Z4 sDrive28i and sDrive35i (2009-2016).
Is this the manual or automatic version?
This is the automatic-transmission version. The manual version is CSF 7045.
Does it fit an X1?
Yes. It fits the E84 X1 (2013-2015) with automatic transmission.
How many rows is the core?
A 2-row 42mm dual core with CSF's B-Tube Technology.

