Black Rear Performance Style Diffuser For BMW 3-Series 2007-2013 E92 Coupe 328i

  

Note: Fit models with M-Sport rear bumper only. The rear end of a car underbody is where a diffuser is usually located. It accelerates the velocity of the airflow underneath the car to create downforce. The pressure under the car is affected by the diffuser so that it can expand back to ambient in the diffuser, as the car moves forward, such that the pressure decreases while the velocity increases. Since the pressure below the car is lower than on the side and above the car, downforce is produced if implemented correctly.

The diffuser "drives" the underbody, which produces the downforce. Performance Style Rear Diffuser -Black finish. What's in the box.

1 x Rear Bumper Diffuser. What you might need for installation. Installation manual is not included.

Installation hardware is not included. Professional installation is highly recommended. We compare prices for you. This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts & Accessories\Exterior Parts & Accessories\Bumpers & Components\Bumpers & Reinforcements".

inc" and is located in this country: US. This item can be shipped worldwide.

1. Brand: CPC
2. Other Part Number: Upgrade Conversion Replacement Rear Bumper Lip Body Kit Moulding
3. Manufacturer Warranty: 90 DAY
4. Interchange Part Number: Bumper Lower Diffuse Under Body Downforce Trim Valance
5. Color: Black
6. Fitment Type: Direct Replacement
7. Note: Fit models with M-Sport rear bumper only
8. Manufacturer Part Number: 07 08 09 10 11 12 13 2013 2012 2011 2010 2009 2008 2007 M-Sport
9. MPN: 304089
10. Material: Polypropylene
11. Installation instructions: Not included
12. Placement on Vehicle: Rear, Lower