1997-1998 BMW 528i 540i Rear Left/Right Sensor
1997–1998 BMW 528i 540i Rear Left/Right Sensor
Direct-fit oxygen sensor pair for late-90s 5-Series, ready to bolt into factory locations. These sensors monitor exhaust gas composition to keep your engine management dialed in. OEM replacement spec for reliable emissions control and fuel efficiency.
Key Features
- Direct factory fitment – Mounts to OEM sensor bungs with zero modification required
- Left and right sensors included – Both rear locations covered in one purchase
- Sealed connector design – Weatherproof contact prevents corrosion and electrical issues
Specs
- Oxygen sensor pair (left and right)
- Factory connector configuration
- OEM replacement specification
Whats Included
- Left rear oxygen sensor
- Right rear oxygen sensor
Frequently Asked Questions
Do these sensors come with the wiring harness or connectors?
They arrive with factory connectors ready to plug into your car's harness. No wiring work needed — just mate them to the existing plugs.
Can I install these without special tools?
You'll need an oxygen sensor socket (cheap, widely available) and a ratchet. The sensors unscrew from the exhaust manifold by hand once heated slightly — no fabrication or drilling involved.
Will these throw a check engine light if the old sensors are still in the car?
Yes. Remove the old sensors completely before installing these. Leaving old hardware in place triggers fault codes and defeats the purpose of the replacement.
Products received may vary slightly from images due to manufacturing tolerances or supply chain variables.
International Orders (Outside USA)
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