The part number 33131200613 is a Genuine BMW Dustcover Plate / Dust Protection Disc (68.5 mm diameter). This thin protective plate is mounted on the rear axle drive / differential output drive flange assembly to block dirt, moisture, and debris from contaminating the output shaft seal and bearings. (9i)
This dust protection disc fits the differential output shafts on the following models:
- 1 Series & 2 Series:
- E82 / E88 / F22 / F23 / F87: 128i, 135i, 228i, 230i, M235i, M240i, and M2 variants (2008–Present).
- 3 Series & 4 Series:
- E21: 320i configurations (1975–1983).
- E30: 318i, 325i, 325is, 325ix, and M3 (1984–1991).
- E36 / E46: 318ti, 323i, 325i, 328i, 330i, and M3 (1992–2006).
- E90 / E91 / E92 / E93: 325i, 328i, 330i, 335i, and M3 (2006–2013).
- F30 / F32 / F36 / G20: 320i, 328i, 330i, 335i, 340i, M340i, 428i, 430i, and 440i platforms (2012–Present).
- 5 Series, 6 Series, & 7 Series:
- E12 / E28 / E34 / E39 / E60 / F10 / G30: Comprehensive fitment across standard RWD variants like the 525i, 528i, 530i, 535i, 540i, and 550i spanning 1975 through modern G-chassis years.
- E23 / E32 / E38 / E65 / F01 / G11: Fits heavy-duty luxury sedans such as the 733i, 735i, 740i, 740iL, and 750iL profiles.
- 8 Series Coupes & Gran Coupes:
- G14 / G15 / G16: 840i, 840ix, and M850ix variations (2019–Present).
- Z-Series Roadsters:
- Z3 / Z4: All engine variants including Z3 Roadster/Coupe, E85, E89, and G29 chassis iterations.
- X-Series SUVs (xDrive Rear Axle Assemblies):
- X1, X3, X4, X5, and X6: Positioned on the rear differential companion flanges on a wide array of utility platforms built from 2000 to the present day.
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