03-06 BMW 325CI/330CI & 03-05 325I/330I/Z4 & 04-06 X3 Front 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
Front Engine Sensor — BMW 325/330 & Z4 & X3
Direct replacement oxygen sensor for early-2000s BMW inline-six and Z4 models. OEM-equivalent construction engineered to restore proper air-fuel ratio monitoring and emissions performance. Critical for maintaining fuel economy and clean combustion after sensor degradation.
Key Features
- OEM-equivalent design - Matches factory sensor calibration and electrical output for plug-and-play function
- Restores fuel trim accuracy - Eliminates rich or lean condition faults that trigger check engine lights
- Direct replacement fitment - No adapter or modification required; connects to existing harness and boss
Specs
- Type: Heated oxygen sensor
- Condition: New
- Quantity: Single unit
Whats Included
- Oxygen sensor
Frequently Asked Questions
Do I need to clear the check engine code after installing this?
After installation, the fault should clear itself within a few drive cycles as the sensor reads normal values. If the code persists, a diagnostic scanner can clear it manually, but the sensor itself will resolve the underlying condition.
Can I install this myself without special tools?
The sensor unscrews with a standard wrench or oxygen sensor socket — no special BMW diagnostic equipment needed. Unplug the electrical connector, remove the old sensor, thread in the new one hand-tight, then snug it with your wrench. Reconnect the harness and you're done.
What if the sensor is stuck in the exhaust manifold?
Let the engine cool completely before removal. If it won't budge, spray penetrating oil around the threads and let it soak for 20–30 minutes. A sensor socket with a breaker bar gives you better leverage than a regular wrench on a seized unit.
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.