Well.. by not providing the BMW PN, you can't really tell how it will match while replacing the OEM MAF you have right now on your car. There are various parts produced by both VDO and Bosch, so both examples could be a perfect replacement for the OEM MAF. The photos on that website depict correct MAFs for both the 3.0i and the 4.4i. However, I never had any past experience with that website, so I cannot advice you about their products. In here, I would rather go for the scrapeyard for an OEM one instead.