Financing Available0% APR Financing Available via Affirm*
Secure Checkoutvia Shop**
97-98 BMW 528i/540i Front Left/Right Sensor
No reviews
Regular price
$120.00
Sale price$99.99
Save $20.01
/
Direct Shipped
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.
✓ Direct-from-Warehouse✓ In-House Quality Check✓ Ships from FL Warehouse
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.
* Rates from 0–36% APR. Payment options through Affirm are subject to an eligibility check and are provided by these lending partners: affirm.com/lenders. Options depend on your purchase amount, and a down payment may be required. CA residents: Loans by Affirm Loan Services, LLC are made or arranged pursuant to a California Finance Lenders Law license. For licenses and disclosures, see affirm.com/licenses. For example, a $800 purchase could be split into 12 monthly payments of $72.21 at 15% APR or 4 interest free payments of $200 every 2 weeks.
**Rates from 0%-36% APR. Payment options through Shop Pay Installments, are subject to an eligibility check and are provided by these lending partners: affirm.com/lenders. Options depend on your purchase amount, and a down payment may be required. State notices to consumers https://www.affirm.com/licenses.
