Bosch Oxygen Sensor — Direct-Fit Single OE-Style Sensor, Fast-Heating Heater & Pre-Coated Threads

The Bosch 13477 is a premium direct-fit oxygen sensor engineered to restore accurate air-fuel feedback and reliable emissions performance for compatible vehicles.

Built on Bosch's decades of sensor expertise, the 13477 blends proven materials, factory testing and a fast-acting heater to reach operating temperature quickly. This single, OE-style sensor arrives ready for installation with pre-coated threads and factory connectors, reducing installation time and the risk of damage. It’s designed for select BMW and Land Rover models (verify fitment for your exact year and engine).

How does this oxygen sensor help my engine and emissions system?

The oxygen sensor monitors exhaust oxygen content so the engine control unit (ECU) can adapt fuel delivery and ignition timing. Restoring a correct sensor signal improves combustion balance and helps the emissions system function as intended without needing complex tuning.

• Provides accurate air–fuel ratio data to the ECU
• Helps maintain efficient catalytic converter operation
• Reduces the chance of driveability issues tied to incorrect oxygen readings

What makes the Bosch 13477 more durable than generic sensors?

Durability comes from construction choices and quality control: a double laser-welded stainless-steel body sealed against exhaust contaminants and a protection tube that shows the result of factory testing. These features minimize corrosion and mechanical failure in high-heat, high-contaminant exhaust environments.

• Double laser-welded stainless-steel housing for corrosion resistance
• Sealed, submersible body to block exhaust damage
• Factory-tested protection tube appearance indicates full functionality

How quickly will this sensor start working after installation?

The 13477 includes a fast-acting heater element so the sensing cell reaches operating temperature in seconds rather than minutes. A quicker warm-up means the ECU receives valid oxygen data sooner, reducing cold-start enrichment and improving initial driveability.

• Heater optimized for planar and multi-wire thimble-style sensors
• Faster warm-up reduces time running in open-loop mode
• Helps stabilize idling and throttle response shortly after startup

Is it easy to install this Bosch oxygen sensor myself?

Yes — the 13477 is supplied as a true direct-fit replacement with OE-style connectors and harness compatibility. Threads come pre-coated with anti-seize so the sensor is ready for bolt-in service, but basic mechanical tools and proper torque procedures are still required.

• Direct-fit OE connectors and harness compatibility
• Threads pre-coated with anti-seize compound out of the box
• Designed to replace original sensor position without modification

Who this is for: The Bosch 13477 is aimed at owners and technicians working on compatible BMW and Land Rover vehicles who want an OEM-style replacement that emphasizes longevity and factory-level testing. If you need a dependable single oxygen sensor that arrives ready to install, offers a fast heater warm-up and incorporates corrosion-resistant construction, this Bosch part is a practical upgrade. Always confirm year, engine and sensor location with your vehicle’s fitment guide before purchasing to ensure correct compatibility and performance.

• Innovative Bosch sensor technology developed since the 1960s
• 100% factory-tested for full functionality
• Double laser-welded stainless steel body; sealed and submersible
• Fast-acting heater for rapid operating temperature
• True direct-fit connectors and pre-coated anti-seize threads
• Fits select BMW and Land Rover models — verify vehicle fitment