K&N Performance Intake Kit - Audi B5 A4 V6 / C5 A6 2.8L V6A high density polyethylene (HDPE) rotationally molded tube helps increase the volume of airflow to your engine and provides a guaranteed increase in horsepower and torque. These systems are paired with a washable, reusable High Flow Air Filter featuring oiled cotton filter media. The oversized, conical design allows you to go up to 100,000 miles between filter services under normal highway driving conditions. A custom heat shield helps protect intake

hub dyno and Revo data acquisition software

2 Nozzles To Cover a Wide Range of Horsepower

BMW 528 xDrive 2

Fitment on the 128i is limited to the 2008-2010 model years (N54 engine)

Designed to increase HP and Acceleration

After exiting the 180 Technology resonator

and charge tract

Our valve uses full billet alloy construction with a piston based internal design that provides for significantly improved reliability over the OEM valves along with lightning fast response

low friction polyoxymethylene - these air jacks are made tough to cope with the high demands from worldwide motorsports

Fits OEM part number 5K1 857 919 D (embossed on the back of the coin tray)

up to 1180kg Axle Load

OE Part # 51237175020 / 51-23-7-175-020 / 51 23 7 175 020