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Automotive Sensors

A failing oxygen sensor can ruin your fuel economy and cause engine damage. Our high-quality aftermarket O2 sensors are designed for perfect compatibility and long-lasting data precision. Whether you are looking for upstream or downstream sensors, we provide the reliable emission control components needed to pass smog tests and keep your engine in top shape.

💡 Note: Our vehicle fitment database is massive. If dropdowns don't respond immediately, please wait a few seconds.

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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

Phone Number: +86 15812449181

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

Automotive Sensors

Filters

4Pcs O2 Sensor Set for Chevy Traverse GMC Acadia Buick Enclave 3.6L V6 (2009-2011) | 234-4815 234-4816

4Pcs Air Fuel Ratio & O2 Sensor Set for Ford F-150 Explorer Escape V6 (2011-2015) | 234-5038 234-4490

4Pcs Air Fuel Ratio & O2 Sensor Set for Nissan Pathfinder Frontier Xterra 4.0L (2007) | 234-9072 234-4297 234-4313

4Pcs Air Fuel Ratio & O2 Sensor Set for Land Rover LR4 Range Rover Sport 5.0L V8 | 234-9095 234-4454 234-4465

4Pcs O2 Sensor Set for Toyota Tundra Sequoia 4.7L V8 (2000-2004 4WD Only) | 234-4162 234-4169

Suitable for Upstream Left Side O2 Sensor for Chevy GMC Cadillac | 15150, 234-4337

Downstream NOx Sensor for Audi Q7 VW Touareg 3.0L TDI Diesel | 059907807B 059907807D

Suitable for 2Pcs Air Fuel Ratio & O2 Sensor for Hyundai Sonata 2.4L (2009-2010) | 234-5081 234-4237

Suitable for Upstream Air Fuel Ratio Sensor for Toyota RAV4 Previa Estima 2.4L | 89467-28010

2Pcs Air Fuel Ratio & O2 Sensor for Subaru Impreza WRX 2.0L Turbo (2002 Manual Trans) | 234-9011 234-4446

Suitable for Upstream Air Fuel Ratio Sensor for Nissan Altima 2.5L (2013-2017 Calif. Emission) | 234-9134 226933TY0A

Suitable for 2Pcs NOx Sensor Set for Freightliner Cascadia Western Star DD13 DD15 Engine | A0101532228 A0101532328

Downstream NOx Sensor for Ram 1500 3.0L EcoDiesel 3.6L 5.7L | 68171188AA

NOx Nitrogen Oxide Sensor for Mercedes GLC X253 S-Class W222 | A0009050008 5WK96681D

2Pcs Nox Nitrogen Oxide Sensor for Mercedes ML350 GL350 BlueTEC | A0009053503 A0009053603

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

PDC Parking Assist Sensor for Toyota Mirai & Lexus CT200h ES300h | 89341-78010

NOx Nitrogen Oxide Sensor for Mercedes ML GL CLS S-Class (W164/W166) | A0009055206

Fuel Pressure Sensor for Audi A3 A4 Q5 & VW Beetle Jetta 2.0T | 06J906051D 0261545051

Upstream Air Fuel Ratio Sensor for Nissan Versa Sentra Altima | 234-9070 22693-ET000

TPS Throttle Position Sensor for Yamaha YZF-R1 R6 MT-09 | 13S858850000

4Pcs O2 Sensor Set for Toyota Highlander Lexus RX330 3.3L V6 (2004-2007) | 234-9042 234-4168 234-4509

Downstream O2 Sensor for Toyota Corolla Matrix Pontiac Vibe 1.8L | 234-4233 89465-02110

Upstream Air Fuel Ratio Sensor for Toyota Highlander Sienna & Lexus RX350 3.5L | 89467-0E240

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

Automotive Sensors

Filters

4Pcs O2 Sensor Set for Chevy Traverse GMC Acadia Buick Enclave 3.6L V6 (2009-2011) | 234-4815 234-4816

4Pcs Air Fuel Ratio & O2 Sensor Set for Ford F-150 Explorer Escape V6 (2011-2015) | 234-5038 234-4490

4Pcs Air Fuel Ratio & O2 Sensor Set for Nissan Pathfinder Frontier Xterra 4.0L (2007) | 234-9072 234-4297 234-4313

4Pcs Air Fuel Ratio & O2 Sensor Set for Land Rover LR4 Range Rover Sport 5.0L V8 | 234-9095 234-4454 234-4465

4Pcs O2 Sensor Set for Toyota Tundra Sequoia 4.7L V8 (2000-2004 4WD Only) | 234-4162 234-4169

Suitable for Upstream Left Side O2 Sensor for Chevy GMC Cadillac | 15150, 234-4337

Downstream NOx Sensor for Audi Q7 VW Touareg 3.0L TDI Diesel | 059907807B 059907807D

Suitable for 2Pcs Air Fuel Ratio & O2 Sensor for Hyundai Sonata 2.4L (2009-2010) | 234-5081 234-4237

Suitable for Upstream Air Fuel Ratio Sensor for Toyota RAV4 Previa Estima 2.4L | 89467-28010

2Pcs Air Fuel Ratio & O2 Sensor for Subaru Impreza WRX 2.0L Turbo (2002 Manual Trans) | 234-9011 234-4446

Suitable for Upstream Air Fuel Ratio Sensor for Nissan Altima 2.5L (2013-2017 Calif. Emission) | 234-9134 226933TY0A

Suitable for 2Pcs NOx Sensor Set for Freightliner Cascadia Western Star DD13 DD15 Engine | A0101532228 A0101532328

Downstream NOx Sensor for Ram 1500 3.0L EcoDiesel 3.6L 5.7L | 68171188AA

NOx Nitrogen Oxide Sensor for Mercedes GLC X253 S-Class W222 | A0009050008 5WK96681D

2Pcs Nox Nitrogen Oxide Sensor for Mercedes ML350 GL350 BlueTEC | A0009053503 A0009053603

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

PDC Parking Assist Sensor for Toyota Mirai & Lexus CT200h ES300h | 89341-78010

NOx Nitrogen Oxide Sensor for Mercedes ML GL CLS S-Class (W164/W166) | A0009055206

Fuel Pressure Sensor for Audi A3 A4 Q5 & VW Beetle Jetta 2.0T | 06J906051D 0261545051

Upstream Air Fuel Ratio Sensor for Nissan Versa Sentra Altima | 234-9070 22693-ET000

TPS Throttle Position Sensor for Yamaha YZF-R1 R6 MT-09 | 13S858850000

4Pcs O2 Sensor Set for Toyota Highlander Lexus RX330 3.3L V6 (2004-2007) | 234-9042 234-4168 234-4509

Downstream O2 Sensor for Toyota Corolla Matrix Pontiac Vibe 1.8L | 234-4233 89465-02110

Upstream Air Fuel Ratio Sensor for Toyota Highlander Sienna & Lexus RX350 3.5L | 89467-0E240

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