BMW
Genuine BMW S55 Exhaust O2 Oxygen Sensor / Lambda Air Fuel Ratio Sensor OEM 11787848482 (11 78 7 848 482) - F80 M3, F82/F83 M4, F87 M2 Competition (F8x) - Pre-Cat Upstream or Post-Cat Downstream - B1S1 B2S1 B1S2 B2S2
Genuine BMW S55 Exhaust O2 Oxygen Sensor / Lambda Air Fuel Ratio Sensor OEM 11787848482 (11 78 7 848 482) - F80 M3, F82/F83 M4, F87 M2 Competition (F8x) - Pre-Cat Upstream or Post-Cat Downstream - B1S1 B2S1 B1S2 B2S2
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BMW Original Equipment Lambda Probe - Part No. 11787848482 - S55 Fitment for F80 M3, F82 F83 M4, F87 M2 Competition
Get your S55 turbo straight six running perfectly with this factory BMW air fuel ratio sensor. This genuine BMW exhaust oxygen monitor keeps mixture control on point, helping deliver crisp throttle response, smooth idle, strong pull through the rev range and cleaner emissions. If you are chasing an engine warning light, rich or lean running, poor MPG or an MOT emissions fail, this is the direct replacement you want.
BMW part number: 11787848482. Suits S55-powered F80 M3, F82 M4, F83 M4 Convertible and F87 M2 Competition. Can be used in pre-cat or post-cat positions depending on vehicle specification.
Why this OEM BMW sensor
- Original equipment quality and calibration for the S55 platform
- Restores closed-loop mixture control for better drivability and economy
- Helps resolve CEL codes related to mixture adaptation and catalytic converter efficiency
- Correct lead length and plug for a tidy, hassle-free install
- Backed by BMW manufacturer warranty for peace of mind
Proven on our cars and customer builds
We run this exact BMW lambda probe on our own S55 cars and customer vehicles. Feedback is consistently positive - smoother part-throttle, cleaner cold starts and fault codes cleared once tired sensors are replaced.
Common signs your sensor is past its best
- Engine management light with mixture, AFR or O2 related codes
- Hesitation, uneven idle or flat spots
- Increased fuel consumption
- Strong fuel smell or sulphur odour from the exhaust
Fitment and placement guidance
The S55 uses multiple lambda probes. This BMW part number 11787848482 is applicable to upstream pre-cat and downstream post-cat locations depending on VIN. Positions often referred to as Bank 1 Sensor 1, Bank 2 Sensor 1, Bank 1 Sensor 2 or Bank 2 Sensor 2. If unsure, use our compatibility check before ordering.
Compatibility
- BMW F87 M2 Competition - S55
- BMW F80 M3 - S55
- BMW F82 M4 - S55
- BMW F83 M4 Convertible - S55
Free compatibility check before dispatch
Add your UK registration or last 7 digits of your VIN at checkout and we will confirm the correct sensor location for your car before we ship.
Installation and fitting support
Straightforward replacement for a competent DIYer. Apply suitable high-temperature anti-seize to the threads and torque to BMW specification. Prefer professional fitting or want it done right first time? Book with MJ Modifications, Warwickshire. Request a quote: info@mjmodifications.co.uk.
Part details
- Part number: 11787848482
- Engine: BMW S55 3.0 twin turbo
- Description: Lambda probe, AFR sensor, exhaust oxygen sensor
- Location: Pre-cat or post-cat depending on VIN. We will confirm for you.
- Manufacturer: BMW Original Equipment
Warranty
Two years manufacturer warranty for UK customers and one year manufacturer warranty for international customers when VIN is provided at checkout on compatible vehicles.
Search terms to help you find the right part
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