The oxygen sensor actively measures the exhaust output from the engine in order to determine the proper mixture for the car. If you are having trouble adjusting the mixture on your car to proper levels, there is a high chance that you may have a faulty oxygen sensor.
Oxygen Sensors
11-78-1-742-050-M14
Oxygen Sensor, Mounts Before Catalytic Converter (2 per car, sold individually) 320mm Length, 525i Sedan/Touring (2001-03), 528i Sedan/Touring (9/98-03), 530i (2001-03), 540i Sedan/Touring (9/98-03), M5 (2000-03), Each Brand: Bosch [More Info]
$84.00
11-78-1-433-940-M14
Oxygen Sensor, Mounts After Catalytic Converters (2 per car, sold individually) 525i Sedan/Touring (2001-03), 528i Sedan/Touring (9/98-00), 530i (2001-03), Each Brand: Bosch [More Info]
$96.75
11-78-1-427-884-M209
Oxygen Sensor (4 per car, sold individually), 528i (1996-08/98), Each Brand: NTK [More Info]
$99.50
11-78-1-247-406-M14
Oxygen Sensor, 370mm, Mounts Before Catalytic Converters (2 per car, sold individually) 540i (1996-08/98), Each Brand: Bosch [More Info]
$104.25
11-78-1-742-051-M14
Oxygen Sensor, Lambda Monitor Probe (580 mm Length), Mounts After Catalytic Converters (2 per car, sold individually) sold individually, E39 540i, 540i Wagon, M5 Brand: Bosch [More Info]
$104.75
Anti-Seize Lubricant
Using a quality anti-seize lubricant now can save you hours of pain-staking work the next time you attempt to remove that old hardware. These premium compounds offer high temperature resistance, corrosion protection, and good electrical conductivity.
Wurth CU 1800 Extreme Pressure Lubricant, 1 lb [More Info]
$26.15
Wurth Exhaust Assembly Paste
Soft paste for fast, easy gas tight sealing of flanges and slip fittings in the exhaust system. No welding necessary. Sets with exhaust heat. Temperature resistant up to approximately 1292° F
