O2 Extension Kit 2009 CTS-V ['E90 3 Series' The wheel's 0mm offset helps

The wheel's 0mm offset helps maintain a balanced stance

short-circuit proof and reverse polarity protected makes it safe for all the vehicles electronics and easy to use

Its high-walled design provides added containment for mud

They come in three color options—Black

Cat-Back w/ Active Exhaust - Dbl X-Pipe - Twin 4

O2 Extension Kit 2009 CTS-V ['E90 3 Series' The wheel's 0mm offset helpsO2 Extension Kit 2009 CTS V 2) 12" Front Extension Harness (4 Pin) 2) 18" Rear Extension Harness (4 pin). Oxygen Sensor Extension harnesses are included in Header kits where needed. This part number should only be ordered as a replacment for damaged or lost Oxygen Sensor Extensions.