Oxygen Sensor Downstream Front & Rear - BMW E39 525i 528i 530i / E46 323CI 323i 325Ci 325i 325xi 328CI 328i 330CI 330i 330xi / E53 X5 / Z3 2.3 2.5i 2.8 3.0i2 per car The Bosch oxygen sensor utilizes a mix of zirconium and yttrium oxides and other elements to form a tough base that withstands the intense stress to which oxygen sensors are subjected. Each element is incredibly strong for best in class performance and maximum service life. Features and Benefits: OE Equivalent. Direct fit for easy installation. OE Style connectors and wire lengths. Base ceramic probe of Zirconium and Yttrium. Patented

Race after race

- E6X/E8X/E9X N54 3

True Mitered Merge Collector:Eliminates dead space that can cause turbulence and hinder flow that formed collectors are prone to produce

0L (turbo) N55 - 2012-2016 BMW M135i/ix (F20/21) L6-3

Pressure Plate - 883082001243

1998-2001 Audi A4 FWD

Which means there’s no need for valves

When installing your new IE billet cam gear

Honing the connecting rod big end in-house on state of the art equipment ensures the tolerances are set correctly to ensure proper bearing operation

The Software

-Great Sound even with factory exhaust

STAGE 1 mounts