top of page
BMW F30 340i Upstream Oxygen (O2) Sensor
SKU F30-340I-O2U
Price
$129.99
The upstream oxygen sensor measures exhaust gas before the catalytic converter, helping the engine computer fine-tune the air-fuel mixture in real time. A worn sensor can hurt fuel economy, cause rough idle, or trigger a check engine light.
This O2 sensor is designed to fit the BMW F30 340i (N55 turbo inline-six), matching the factory thread size and connector for a direct replacement.
Accurate, OEM-matching design restores proper fuel trims and helps your engine run efficiently and cleanly again.
Reference: OE/interchange ULTRA-POWER
Quantity
New
Happy Humbl Customers
What they’re saying
"The socket set is top-tier quality. Heavy-duty steel that handles real torque without slipping. Better than the big box store brands honestly."
Jason M., Ohio
Ordered brake pads and rotors for my truck. Everything fit perfectly right out of the box. Saved me cash and shipping was surprisingly fast."
Isaac L., Texas
"Incredible service. Needed a specific sensor fast and it arrived a day early. The site is simple to use. Finally found a reliable parts source!"
Mike T., Florida
bottom of page