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BMW

Precision is non-negotiable for BMW owners. Automotive-LeaderStore offers premium aftermarket engine components that uphold the performance driving experience. Whether you need precise fuel management sensors or ignition hardware, our parts deliver reliability and responsiveness for your BMW engine.

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FAQ & Support

🚦 1. Trouble Codes & Symptoms

Q1: My car shows codes like P0420 / P0171 / P0138. What do they mean?

These are common codes related to the fuel system or oxygen sensors:

P0420: Catalyst efficiency below threshold
P0171: System too lean
P0138: O2 sensor voltage high

They often indicate a worn oxygen sensor, exhaust leak, or ignition issue. If you're not sure, simply tell us your year, make, model, and engine—we'll check the exact part you need.

Q2: My engine shakes at idle. Is my ignition coil bad?

It's very possible. Common symptoms of a failing ignition coil include:

Rough idle or shaking
Hard cold starts
Poor acceleration
Higher fuel consumption
Misfire popping noise

Tell us your vehicle info—our team can help you identify the cause.

Q3: What are the symptoms of a bad oxygen sensor?

Typical signs include: Check Engine Light on, Increased fuel consumption, Poor acceleration, Strong fuel smell, and Slow throttle response.

Most sensors should be replaced every 80,000–100,000 km.

🔍 2. Fitment & Compatibility

Q4: How do I know which oxygen sensor fits my car?

Just provide: Year, Make, Model, and Engine size.

We'll confirm: Upstream or downstream, Correct connector, Proper reference number, and Federal vs. California emissions compatibility.

Q5: What's the difference between ignition coils?

High-quality aftermarket: Close to Standard but more affordable.

We only offer high-grade, reliable ignition coils.

Q6: How many oxygen sensors does my car have?

Most vehicles have 2–4 sensors (Upstream front and Downstream rear). We can confirm the exact number for your vehicle.

🛒 3. Buying, Quality & Concerns

Q7: Are cheap oxygen sensors reliable?

They work for a short time but usually cause issues like short lifespan, slow response, and frequent check engine lights.

We only sell new, high-quality, fully tested sensors.

Q8: How can I avoid buying a refurbished or used auto part?

Check for scratches on the connector, dirty wiring, or marks on threads.

Our parts are 100% brand new, never refurbished, and fully tested.

🧰 4. Installation & Usage

Q9: Can I install an oxygen sensor myself?

Yes. Difficulty: medium.

You'll need an O2 sensor socket, Anti-seize compound, and a Torque wrench. We recommend clearing fault codes with an OBD scanner after installation.

Q10: Do ignition coils need programming after replacement?

In most vehicles, no programming is required. Just swap the old coil with the new one.

💰 5. Value & Performance

Q11: Your parts cost less than Other accessories. Are they really reliable?

Yes—our parts use the same-grade materials and testing standards as suppliers. Because we don't go through dealer channels, the price is much more affordable.

About us

Since its inception, Automotive Leader has been guided by a simple mission: to provide high-performance aftermarket parts for automotive technicians and DIY enthusiasts.

The website is jointly operated by Trademark Name: Automotive-leader Store registered at Physical Address: Room 602, No. 152 Helong East Road, Helong Subdistrict, Baiyun District, Guangzhou City Postal Code: 510000 and Company name：BLUE STAR TRADING LIMITED registered at Company address：RM C，6/F，WORLD TRUST TOWER 50 STANLEY STREET CENTRAL HK

U.S. Address:
7600 LTC Parkway 34986
PORT SAINT LUCIE, FL - United States

whatsAPP Number: +86 18316212443

Email: support@automotive-leaderstore.com

Logistics Policy

1. U.S. Warehouse (Standard Option)
Handling time: 1-3 business days
Transit time (days): 3-6 business days via USPS/UPS/FedEx.

2. China Warehouse (Standard Option)
Handling time: 1-3 business days
Transit time (days): 14-22 business days via USPS/UPS/FedEx.

Refund and Return Policy

30-Day Returns and Refunds / Return shipping is free（Due to a product issue）

We do not accept direct exchanges.

After receiving and inspecting your returned item, we will notify you whether your refund has been approved.

If approved, the refund will be processed back to your original payment method within 5 business days.

Please note that your bank or credit card company may also require additional time to process and reflect the refund.

If you have not received your refund within 10 business days after your return request has been approved, please contact us.

Contact: support@automotive-leaderstore.com

Account

BMW

Filters

4Pcs Wideband O2 Sensor for BMW 128i 328i X3 X5 (E90/E82) | 234-5138, 234-5139, 234-4876, 234-4892

2Pcs O2 Sensor Upstream & Downstream for BMW 328i 128i (N52) | 234-5138 234-4892

2Pcs Air Fuel Ratio & O2 Sensor Set for BMW 3 & 5 Series (F30/G30) (2015-2022) | 11788631047 11788631049

Upstream Lambda O2 Sensor for BMW 528i X3 F10 (2010-2013) | 11787589139

4Pcs Upstream Downstream O2 Sensor for 2003 BMW 325Ci 325i 330Ci 330i 525i 2.5L 3.0L BMW X3 L6 3.0L | 234-5137 234-4473

Upstream 5-Wire Wideband O2 Sensor for BMW X3 X5 120i 320i 545i | 11787530282

Upstream 5-Wire Wideband O2 Sensor for BMW 3 Series E46 X3 E83 Z4 | 0258007142

Upstream 5-Wire Wideband O2 Sensor for BMW V8 X5 M5 Alpina & Mini | 234-5026 11787576673

6Pcs Fuel Injector Set for BMW 328i 525i X3 X5 Z4 3.0L (2006-2012) | 13537531634

Upstream 5-Wire Wideband A/F Sensor for BMW 760Li & Mini Cooper | 234-5037 11787595353

Upstream 5-Wire Wideband O2 Sensor for BMW F30 F32 G30 X3 X4 | 11788631047

4Pcs O2 Sensor Set for BMW E90 320i E81 120i (2008-2016) | 11787535269 11787545243 11787570481 11787570104

Upstream O2 Sensor for BMW 320i 328i 528i X1 X3 (N20 Engine) | 11787589122 234-8084

Upstream Wideband O2 Sensor for BMW X5 550i 750i V8 (N63) | 234-5136 11787535269

Upstream Wideband O2 Sensor for BMW 320i 120i X1 (E90/E84/E81) | 11787570104 11787590713

4Pcs O2 Sensor for BMW 545i 645Ci 4.4L V8 (2004-2005 Manual Trans)| 234-5133 234-5134 234-4470

Upstream Wideband O2 Sensor for BMW 325i 328i 525i X3 X5 (E90/E60) | 234-5139, 11787558055

2Pcs Air Fuel Ratio & O2 Sensor Set for BMW 328i & X5 3.0L (N52 Engine) (2007-2013) | 234-5139 234-4892

Suitable for Upstream Wideband O2 Sensor for Mini Cooper Clubman 1.6L (07-10) | 234-5135

2Pcs O2 Sensor for BMW 125i 328i X1 (N20 Engine) 2012-2015 | 234-5054 234-4562

Suitable for 4Pcs Ignition Coil for BMW S1000RR Motorcycle (2012-2014) | 771087401

Suitable for 6Pcs Ignition Coils for BMW X5 Z3 2.5L-3.0L | C1239/ UF-300 /UF-354

Upstream Nitrogen Oxide Sensor for BMW X5 335d 535d 740Ld xDrive 3.0L Diesel (09-17) | 13628589846 5WK96699C

Rear NOx Nitrogen Oxide Sensor for BMW 328d & X5 35d Diesel (2009-2017) | 13628589844

Subscribe to our email list to receive a VIP discount

FAQ & Support

🚦 1. Trouble Codes & Symptoms

🔍 2. Fitment & Compatibility

🛒 3. Buying, Quality & Concerns

🧰 4. Installation & Usage

💰 5. Value & Performance

About us

Logistics Policy

Refund and Return Policy

Country/Region

Country/Region

BMW

Filters

4Pcs Wideband O2 Sensor for BMW 128i 328i X3 X5 (E90/E82) | 234-5138, 234-5139, 234-4876, 234-4892

2Pcs O2 Sensor Upstream & Downstream for BMW 328i 128i (N52) | 234-5138 234-4892

2Pcs Air Fuel Ratio & O2 Sensor Set for BMW 3 & 5 Series (F30/G30) (2015-2022) | 11788631047 11788631049

Upstream Lambda O2 Sensor for BMW 528i X3 F10 (2010-2013) | 11787589139

4Pcs Upstream Downstream O2 Sensor for 2003 BMW 325Ci 325i 330Ci 330i 525i 2.5L 3.0L BMW X3 L6 3.0L | 234-5137 234-4473

Upstream 5-Wire Wideband O2 Sensor for BMW X3 X5 120i 320i 545i | 11787530282

Upstream 5-Wire Wideband O2 Sensor for BMW 3 Series E46 X3 E83 Z4 | 0258007142

Upstream 5-Wire Wideband O2 Sensor for BMW V8 X5 M5 Alpina & Mini | 234-5026 11787576673

6Pcs Fuel Injector Set for BMW 328i 525i X3 X5 Z4 3.0L (2006-2012) | 13537531634

Upstream 5-Wire Wideband A/F Sensor for BMW 760Li & Mini Cooper | 234-5037 11787595353

Upstream 5-Wire Wideband O2 Sensor for BMW F30 F32 G30 X3 X4 | 11788631047

4Pcs O2 Sensor Set for BMW E90 320i E81 120i (2008-2016) | 11787535269 11787545243 11787570481 11787570104

Upstream O2 Sensor for BMW 320i 328i 528i X1 X3 (N20 Engine) | 11787589122 234-8084

Upstream Wideband O2 Sensor for BMW X5 550i 750i V8 (N63) | 234-5136 11787535269

Upstream Wideband O2 Sensor for BMW 320i 120i X1 (E90/E84/E81) | 11787570104 11787590713

4Pcs O2 Sensor for BMW 545i 645Ci 4.4L V8 (2004-2005 Manual Trans)| 234-5133 234-5134 234-4470

Upstream Wideband O2 Sensor for BMW 325i 328i 525i X3 X5 (E90/E60) | 234-5139, 11787558055

2Pcs Air Fuel Ratio & O2 Sensor Set for BMW 328i & X5 3.0L (N52 Engine) (2007-2013) | 234-5139 234-4892

Suitable for Upstream Wideband O2 Sensor for Mini Cooper Clubman 1.6L (07-10) | 234-5135

2Pcs O2 Sensor for BMW 125i 328i X1 (N20 Engine) 2012-2015 | 234-5054 234-4562

Suitable for 4Pcs Ignition Coil for BMW S1000RR Motorcycle (2012-2014) | 771087401

Suitable for 6Pcs Ignition Coils for BMW X5 Z3 2.5L-3.0L | C1239/ UF-300 /UF-354

Upstream Nitrogen Oxide Sensor for BMW X5 335d 535d 740Ld xDrive 3.0L Diesel (09-17) | 13628589846 5WK96699C

Rear NOx Nitrogen Oxide Sensor for BMW 328d & X5 35d Diesel (2009-2017) | 13628589844

Subscribe to our email list to receive a VIP discount

FAQ & Support

🚦 1. Trouble Codes & Symptoms

🔍 2. Fitment & Compatibility

🛒 3. Buying, Quality & Concerns

🧰 4. Installation & Usage

💰 5. Value & Performance

About us

Logistics Policy

Refund and Return Policy