Replacement radiator breather screw/valve from Vierol, supplied to OE specification for BMW cooling systems. Designed to restore correct system venting and help prevent coolant leaks or pressure issues.
Key Features:
- OE-matching breather screw/valve for radiator venting
- Direct replacement for BMW OEM part number 11537793373
- Helps purge air from cooling system during service
- Manufactured to OE dimensions and sealing standards
- Suitable for petrol and diesel applications listed below
Compatible With:
BMW 8 Series (E31) 1990-1999: 840i/840Ci 4.0–4.4, 850i/850Ci 5.0–5.4, 850CSi
BMW 3 Series (E30) Saloon/Touring/Convertible 1982-1994: 316i 1.6/1.8, 318i/318is
BMW 3 Series (E36) Saloon/Coupe/Convertible/Touring/Compact 1990-2000: 316i, 318i/318is, 320i, 323i, 325i, 328i, 323ti
BMW Z3 (E36) Roadster/Coupe 1995-2003: 1.8i, 2.0i, 2.2i, 2.8i, 3.0i, M 3.2
BMW 5 Series (E34) Saloon/Touring 1987-1997: 518i, 520i, 525i, 525iX
BMW 7 Series (E38) 1994-2001: 728i/iL, 730i/iL, 735i/iL, 740i/iL, 740d, 750i/iL
BMW 5 Series (E39) Saloon/Touring 1995-2004: 520i/520d, 523i, 525i, 528i, 530i, 535i, 540i
BMW Z8 (E52) 2000-2003: 4.9
BMW 3 Series (E46) Saloon/Coupe/Touring/Convertible/Compact 1998-2007: 316i/316Ci/318i/318Ci, 318d, 320i/320Ci/320Cd/320d, 323i/323Ci, 325i/325Ci/325xi, 328i/328Ci, 330i/330Ci/330xi, M3/M3 CSL
BMW X5 (E53) 2000-2007: 3.0i, 4.4i, 4.6is, 4.8is
BMW Z4 (E85/E86) Roadster/Coupe 2003-2009: 2.5i, 3.0i, Z4 M
BMW X3 (E83) 2003-2011: 2.0i, 2.5i, 3.0i xDrive, xDrive20i
BMW 1 Series (E81/E87/E88/F20) 2003-2019: 116i/116d/116d 1.5, 118i/118d/118d xDrive, 120i/120d/120d xDrive, 125i/125d, M135i, M140i
BMW 3 Series (E90/E91/F30/F80) 2004-2018: 316i, 318i, 320i/320si, 320d, 325d, 328i/328i xDrive, 335i/335i xDrive, ActiveHybrid
Year Range:
1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
Fitment Note:
This is an aftermarket replacement part, not a genuine BMW component.