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Genuine BMW
BMW Part Number34 21 6 864 903

Brake disc, ventilated

276×19 · one of 5 sizes

Out of stock

One email when it is listed. Nothing else.

Free US shipping on orders over $75.00 · oversize quoted. Oversize items ship at a flat $49.99 each — free shipping does not cover them.

WARNING: Cancer and Reproductive Harm from exposure to lead — www.P65Warnings.ca.gov P65Warnings.ca.gov

Inspected and graded before it's listed · 30-day returns

Make sure this fits your car

Fits E36 323i, 323i 2.4, 328i · E46 316i–323i 2.4 & more 1994–2004 — M52, M54 engines

Select your vehicle to check fitment
See all 176 fitting cars
SedanM52AutomaticCB85
CoupeN45AllBX71
CompactM47NAllAT91

Other sizes · 5 in all

Brake disc, ventilated – BMW diagram

Callout 02 on BMW’s drawing “Rear wheel brake / brake disc”. Open the drawing →

Also shown on Service, brakes, Rear wheel brake, brake pad sensor.

Brake disc, ventilated — a genuine BMW part, number 34 21 6 864 903. You will find it under Brakes (Rear wheel brake). It supersedes the older number 34 21 6 855 155, so a part carrying that number is the same part.

Fits E36 323i and 328i (1996–1999), sedan, coupe, convertible and touring, with the M52 engine. Also fits E46 320i and 323i (1999–2005) with the M52 or M54 engines.

BMW draws it on 3 drawings, among them Service, brakes and Rear wheel brake / brake disc. BMW's catalog calls for two of these at each place it is fitted. It weighs about 5.4 kg (12 lb).

Out of stock. Request it and we will notify you when it is in stock.

Details

EnginesM52, M54
Weight5.41 kg

Used parts are inspected and graded: Good (minimal wear), Fair (normal wear) or Acceptable (visible wear). All fully working. Returns: 30 days if a part arrives damaged or not as described.

BMW has renumbered this part. All of these numbers are the same part.

  • 34 21 6 864 903currentOut of stock
  • 34 21 1 162 315replaced by 34 21 6 864 903
  • 34 21 1 165 211replaced by 34 21 6 864 903
  • 34 21 6 855 155replaced by 34 21 6 864 903

The other parts on BMW’s drawing “Rear wheel brake / brake disc”. Open the drawing →

#PartIn stockAction
01Brake discOut of stockRequest
02Brake disc, ventilated · this part7 numbers at this calloutOut of stock
03Inner hex boltOut of stockRequest
04Protection plate left6 numbers at this calloutOut of stockRequest
05Hex Bolt with washerOut of stockRequest
06Hex BoltOut of stockRequest
SedanM52AutomaticCB85
CoupeN45AllBX71
CompactM47NAllAT91

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InBrakesRear wheel brake