1997-1998 BMW 528i 540i Rear Left/Right Sensor
K2 Industries
1997-1998 BMW 528i 540i Rear Left/Right Sensor
Check fitment before ordering
Match the year, make, model, trim and engine in the product details. Review mounting requirements and vehicle modifications. Ask us about this part.
Eligible returns within 30 days of receipt. Items must be unused, with tags and original packaging. Contact Lee Mods before sending anything back. Lee Mods pays return shipping for eligible U.S. returns; no restocking fee. See Returns & Exchanges for full conditions.
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.
Your vehicle
Select a vehicle to check the supplied application records for this part.
Choose or change vehicle →Product reference & ordering help
Supplier & part identification
K2 Industries
| Option | SKU / part reference |
|---|---|
| Standard | K2-10770-BMW-006-EC |
Vehicle compatibility
Read the application years, model, trim, engine and exclusions in the description above. A make-level collection or product recommendation alone does not confirm fitment.
Request fitment help →Installation & specifications
Review the manufacturer’s specifications and installation notes above. Confirm required mounting hardware, tools and modifications before ordering. If instructions are not supplied, contact us with the part reference.
Shipping expectations
Processing and delivery vary by product, supplier and destination. Contact us to confirm timing for your part before planning an installation.
Shipping & delivery informationManufacturer warranty
Coverage and exclusions vary by manufacturer and part. Review the supplied product documentation or ask us for the applicable terms.
Warranty information