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If your engine is triggering an oxygen sensor check engine light, it's time to consider a replacement with this high-performance unit. The O2 sensor is a critical component that measures unburned fuel in the exhaust pipe, enabling precise fuel mapping adjustments for reduced emissions and improved fuel economy.
When the O2 sensor malfunctions, your vehicle's MPG and overall performance can suffer. The good news is that replacing this unit is a straightforward process that can quickly restore your engine's performance and mileage. To ensure easy removal in the future, apply some anti-seize on the threads.
Regular, scheduled maintenance should include the O2 sensor replacement, as these sensors have a tendency to degrade slowly over time.
OE BMW exhaust manifold mounting hex nuts. Best to replace when installing new headers or removing the old exhaust headers for any reason. We also recommend replacing the exhaust studs as well do to corrosion often building up on the end, preventing them from being removed or installed easily.
COPPER HEX NUT - 7mm : 119500
Connects the exhaust manifold to the downpipes.
Genuine BMW Hex Bolt - M10X40
This item fits the following BMW Chassis:
E36,E39,E46,E53 X5,E83 X3,E85
Fits BMW Engines including:
M44,M52,M54,M56,S52
Standard exhaust stud bolts for the header connection to the engine head.
For the E46 S54, these can be used as extended bolts for aftermarket header systems with thicker than normal flanges.
Genuine BMW Stud Bolt - M7X42
This item fits the following BMW Chassis:
E36 M3,E34,E36,E39,E46
Fits BMW Engines including:
M44,M50,M52,S50,S52
