There's no mistaking a leaking exhaust system - your neighbors will tell you that. It could be a bad muffler, a broken gasket, or even a missing exhaust hanger. Whatever's causing the racket, you'll find a quality OEM replacement in this section. Or, if you're looking for better flow and enhanced performance, be sure to browse our selection of upgrades as well.
Oxygen Sensor
The oxygen sensor measures exhaust gases, then sends a signal to the fuel injection control unit to set the correct fuel air mixture for the engine to run correctly. If the oxygen sensor fails, it can cause rough running and poor fuel economy.
11-78-1-433-940-M14
Oxygen Sensor Length = 990 mm, X3 2.5i (1) after catalyst in front manifold Brand: Bosch [Photo]
$65.00
11-78-1-742-050-M14
Oxygen Sensor Length = 320 mm, X3 2.5i (1) before catalyst in front manifold Brand: Bosch [Photo]
$62.25
11-78-7-513-962-M14
Oxygen Sensor Length = 320 mm, X3 2.5i (1) before catalyst in rear manifold Brand: Bosch [Photo]
$140.00
11-78-7-513-963-M14
Oxygen Sensor Length = 990 mm, X3 2.5i (1) after catalyst in rear manifold Brand: Bosch [Photo]
$141.00
Exhaust Gasket
18-10-7-502-346-M17
Exhaust Manifold Gasket at Manifold/Catalyst to Center Muffler (2 Per Car), X3 2.5i Brand: Victor Reinz [Photo]
Hex Bolt for Exhaust Manifold NOTE: Quantity per car varies. Confirm quantity on car before ordering., X3 2.5i Brand: Genuine BMW [Photo]
$24.50
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.
