NGK Audi A4 2009-2005 Direct Fit 5-Wire Wideband A/F Sensor Gunsai and a 3 way valve

and a 3 way valve that keeps the nitrous in the pump and lines between refills

STEP 3: Apply Under Carpet Lite over damping material on firewalls and floor boards to block up to 85% of heat and for additional noise control

Fragola 1/2 x 3/4 Pipe Reducer Bushing - Black

5in or 3in diameter options and include the Mishimoto Lifetime Warranty

Nitrous Express Replacement O-Ring Gasket for Coyote Plate

NGK Audi A4 2009-2005 Direct Fit 5-Wire Wideband A/F Sensor Gunsai and a 3 way valveNTK is the world's largest supplier and manufacturer of OEM oxygen sensors. Oxygen sensors play a critical role as part of the vehicle's on board diagnostic system in maintaining optimal engine performance, maximizing fuel efficiency and reducing harmful emissions. While conventional switching oxygen sensors only switch rich or lean, wideband oxygen (or Air Fuel Ratio) sensors produce a linear output signal that allows the ECU determine exactly how