Water Temperature Sensor - 13621703993

Double temperature switch, 4 prong, installs on side of cylinder head. 

Detailed list of BMW fitments for this dual temperature sensor/switch: 
BMW 318i / 318is / 318ti 1996-1999 (E36)
BMW 323is Coupe 1998-1999 (E36)
BMW 323i Convertible 1998-1999 (E36)
BMW 328i 1996-1998 (E36)
BMW 328is 1996-1999 (E36) 
BMW M3 1995-1999 (E36 M3, 3.0 and 3.2 liter)
BMW 525i, 530i 2001-2003 (E39)
BMW 528i 1997-2000 (E39)
BMW 540i 1997-2003 (E39)
BMW M5 2000-2003 (E39)
BMW 740i, 740iL, 750iL - 1995-2001 (E38)
BMW 840Ci & 850Ci 1994-1997 (E31)
BMW Z3 1996-2000 (E36/7)
BMW Z8 2000-2003 (E52)
BMW X5 2000-2006 (3.0 liter and 4.4 liter)

BMW Fitments:

3 Series
E36 (92-99) > 318i M44
E36 (92-99) > 318ic M44
E36 (92-99) > 318is M44
E36 (92-99) > 323ic
E36 (92-99) > 323is
E36 (92-99) > 328i
E36 (92-99) > 328ic
E36 (92-99) > 328is
E36 (92-99) > M3 (96-99)
3 Series
E36/5 (95-99) > 318ti M44
5 Series
E39 (97-03) > 525i
E39 (97-03) > 528i
E39 (97-03) > 530i
E39 (97-03) > 540i
E39 (97-03) > M5 (00-03)
7 Series
E38 (95-01) > 740i
E38 (95-01) > 740iL
E38 (95-01) > 750iL
8 Series
E31 (91-97) > 840Ci
E31 (91-97) > 850Ci
X5 Series
E53 X5 (00-06) > X5 3.0i M54
E53 X5 (00-06) > X5 4.4i M62 4.4L (99-03)
E53 X5 (00-06) > X5 4.4i N62
E53 X5 (00-06) > X5 4.6is M62
E53 X5 (00-06) > X5 4.8is N62
Z Series
E36/7 / E36/8 Z3 (96-02) > Z3 1.9
E36/7 / E36/8 Z3 (96-02) > Z3 2.5
E36/7 / E36/8 Z3 (96-02) > Z3 2.8
E36/7 / E36/8 Z3 (96-02) > Z3 3.0
E36/7 / E36/8 Z3 (96-02) > Z3 M - S52
Z Series
E52 Z8 (00-03) > Z8 Roadster (2000-2003)