Genuine BMW M Performance Gloss Black Rear Diffuser - BMW NA5 iX3 (2027+ M Sport / M Sport Pro)
You see the back of your car every time you walk away from it. The Genuine BMW M Performance Rear Diffuser makes that view of your NA5 iX3 look finished. It gives the lower rear bumper a sportier, more aggressive shape in high-gloss black.
BMW M Performance developed it for the 2027 BMW iX3 50 xDrive with the M Sport Package or M Sport Professional Package, as part of the same aero program as the roof spoiler and front splitters. It arrives finished, so there is nothing to paint.
Genuine BMW M Performance iX3 Rear Diffuser, Not a Replica
Copies of M Performance aero show up fast after every new BMW launches, and the iX3 is no exception. AutoTecknic only sells genuine BMW and BMW M Performance parts. This diffuser carries a real BMW part number, listed below, that any BMW dealer can verify.
Completes the iX3 M Performance Aero Kit
The rear diffuser balances the front end when you run the M Performance front splitter set and center splitter set. Add the M Performance roof spoiler for the full look BMW designed. Each piece is sold separately.
What's Included
- Genuine BMW M Performance Rear Diffuser for the NA5 iX3 (1)
Key Features
- Genuine BMW M Performance part developed for the NA5 iX3
- High-gloss black finish
- Sportier, more aggressive lower rear bumper profile
- Designed for iX3 models with the M Sport Package or M Sport Professional Package
- Matches the iX3 M Performance roof spoiler, front splitters and center splitters
Specifications
- Brand: BMW M Performance
- Manufacturer: BMW
- Product Type: Rear diffuser
- Part Number: 51125B70207 (51 12 5 B70 207)
- Condition: New, genuine BMW part
- Finish: High-gloss black (not exposed carbon fiber)
- Mounting Location: Lower rear bumper
- Vehicle: BMW iX3 (NA5)
- Model Years: 2027+
- Compatible Model: iX3 50 xDrive
- Required Package: M Sport Package or M Sport Professional Package
- Quantity: 1 diffuser
Vehicle Fitment
Confirmed fitment for the following vehicle:
- BMW iX3 / NA5 (2027+): iX3 50 xDrive with M Sport Package or M Sport Professional Package
BMW does not list this part for iX3 models without M Sport or M Sport Professional. It does not fit the previous-generation G08 iX3.
Installation Notes
BMW has not published an install time for the rear diffuser. It fits to the lower rear bumper, and alignment should be checked on your car before final mounting, so we recommend a BMW dealer or an experienced installer.
- Confirm your iX3 has the M Sport Package or M Sport Professional Package. Check your window sticker or build sheet.
- Clean the lower rear bumper where the diffuser mounts.
- Test-fit the diffuser and check alignment against the bumper before final installation.
- Follow BMW's installation instructions for this part number.
Genuine BMW M Performance parts are non-returnable, so confirm your package before ordering. Not sure? Send us your VIN through our contact page and we will check it for you.
