97-98 BMW 528i/540i Front Left/Right Sensor
SHIPPING - RETURNS - WARRANTY - CANCELLATION POLICY
*** Market Conditions after 2020 have changed the landscape of automotive parts. Although we try to stock 1000's of items in our multiple warehouse and use multiple distribution channels, having back-orders are unavoidable in today's market. If you are in need of a product quickly, we suggest email, message, or call us for availability so that we may explore your options.
Email: Sales@Speedzoneweb.com
Call: 407-846-8430
Text: 407-749-6314
Frequently Asked Questions
97-98 BMW 528i/540i Front Left/Right Sensor
OEM replacement oxygen sensors for your BMW's fuel management and emissions system. These direct-fit units restore proper air-fuel ratio readings and engine performance. Built to factory specifications for reliable operation in high-heat engine bay conditions.
Key Features
- Front position sensors - Critical for catalytic converter efficiency and fuel trim control
- Direct OEM fit - No modification or adapter required; mounts at factory sensor bungs
- Left and right pair - Covers both sensors for complete bank coverage
Specs
- Configuration: Pair (left and right)
- Condition: New
Whats Included
- Left oxygen sensor
- Right oxygen sensor
Frequently Asked Questions
Do I need any special tools or adapters to install these?
These mount directly at the factory sensor bungs with no adapters needed. You'll want an oxygen sensor socket (a cheap, standard tool) and basic hand tools. Disconnect the battery before you start and let the exhaust cool completely—sensor bungs sit in hot territory.
Will these trigger a check engine light?
Not if they're installed correctly and functioning properly. If your light was on before install due to a bad sensor, it should clear once the new sensors complete their readiness cycle—typically after 50–100 miles of normal driving.
Can I install just one sensor, or do I need both?
You can replace one at a time if needed, but both sensors work together to balance fuel trim across both banks. Replacing the pair ensures consistent engine performance and prevents uneven air-fuel ratios between cylinders.
Our History
For 26 years Speedzone Performance LLC has been providing aftermarket car parts to Central Floridians and 1000's of customers online. What makes us different than all the other places online? We have 3 actual brick and mortar locations where were serve customers daily and find new ways to provide support and assistance to the automotive community at large. From our in house SPDZ1 Brand, to our constantly growing in stock inventory, we strive to make our customer service and ease of purchase stand out from the rest! We are also one of the largest automotive part financing providers anywhere in the United States, and continue to provide more options for our customers every year. We love what we do, and it shows in every product we sell and every new customer who becomes a part of our Speedzone Family.