This original BMW heat exchanger uses engine coolant to control the temperature of the transmission fluid on models with automatic or dual-clutch transmission. Applications include E82/E88 135i, 135is (2008-2013), E90/E92/E93 335i, 335is, 335ix (2007-2013), E84 X1 35i (2013-2015), and E89 Z4 35i, 35is (2009-2016).
Only for cars with automatic or DCT (Dual Clutch Transmission).
This part is listed by BMW as BMW part number 17217536929 (17-21-7-536-929) and is described as Nissens 91224 Transmission Oil Cooler (Heat Exchanger).
BMW Fitments:
1 Series
E82 / E88 (08-13) > 135i N54 (08-10)
E82 / E88 (08-13) > 135i N55 (11-13)
E82 / E88 (08-13) > 135is N55 (11-13)
3 Series
E90 / E91 / E92 / E93 (06-13) > 335i N54 (07-10)
E90 / E91 / E92 / E93 (06-13) > 335i N55 (11-13)
E90 / E91 / E92 / E93 (06-13) > 335is N54
E90 / E91 / E92 / E93 (06-13) > 335xi N54 (07-10)
E90 / E91 / E92 / E93 (06-13) > 335xi N55 (11-13)
X1 Series
E84 X1 (2013-2015) > X1 35i xDrive
Z Series
E89 Z4 (2009-2016) > Z4 sDrive35i
E89 Z4 (2009-2016) > Z4 sDrive35is
