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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

2Pcs Air Fuel Ratio Sensor for Subaru Forester Impreza XV Crosstrek (2011-2014) | 234-9109 234-4513

2Pcs Air Fuel Ratio & O2 Sensor for Subaru Legacy Outback 2.5L (2010-2012) | 234-9097 234-4445

2Pcs Air Fuel Ratio & O2 Sensor for Toyota Corolla Matrix 1.8L (2011-2014) | 234-9112 234-4305

2Pcs O2 Sensor Set for Ford Focus 2.0L Non-Turbo (2012-2018) | 234-5068 234-4575

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

Suitable for 2Pcs Air Fuel Ratio Sensor for Mazda CX-7 2.3L Turbo (07-09) | 234-5012 234-4044

2Pcs O2 Sensor for Lexus RX330 Toyota Highlander (2004-2006) | 234-9042 234-4168

Suitable for 2Pcs Air Fuel Ratio & O2 Sensor for Mitsubishi Lancer Outlander Sport (2011-2018) | 234-5051 234-4114

2Pcs Air Fuel Ratio & O2 Sensor for Subaru Forester Impreza Outback 2.5L (04-05) | 234-9122 234-4732

2Pcs Air Fuel Ratio & O2 Sensor for Toyota Tundra Sequoia Tacoma (2013-2016) | 234-9145 234-4926

Suitable for 2Pcs O2 Sensor for Lexus RX330 Toyota Highlander (2004-2006) | 234-9042 234-4509

Suitable for 2Pcs Downstream O2 Sensor for Ford F-150 Explorer Expedition V8 (1997-2010) | 234-4127

2Pcs Air Fuel Ratio & O2 Sensor for Toyota Corolla 1.8L (2014-2019) | 234-9140 234-4921

2Pcs Air Fuel Ratio & O2 Sensor for Acura MDX 3.7L (2007-2009) | 234-5053 234-4351

2Pcs Air Fuel Ratio Sensor for Hyundai Accent Veloster Kia Rio 1.6L (2012-2017) | 234-5055 234-4568

2Pcs Air Fuel Ratio & O2 Sensor for Subaru Legacy Outback 2.5L (2013-2014) | 234-9136 234-4907

2Pcs Air Fuel Ratio & O2 Sensor for Toyota Corolla Matrix 1.8L (2009-2010) | 234-9056 234-4305

Suitable for 2Pcs O2 Sensor Upstream/Downstream (Passenger Side) for Jeep Wrangler 3.8L (2007-2010) | 234-4881 234-4587

2Pcs Air Fuel Ratio & O2 Sensor for Nissan Altima 2.5L (2013-2017) | 234-9133 234-4905

Suitable for 2Pcs O2 Sensor Up & Down for Suzuki Grand Vitara 2.7L V6 (2006-2008) | 234-9032 234-4387

2Pcs O2 Sensor for Hyundai Sonata Kia Optima Sorento 2.4L (2015-2019) | 234-5714 234-8030

Suitable for 2Pcs O2 Sensor Up & Down for Nissan Altima Maxima 3.5L V6 (2010-2013) | 234-9096 234-4380

2Pcs Downstream O2 Sensor for Cadillac Escalade Chevy Silverado GMC Yukon | 234-4256

2Pcs Air Fuel Ratio Sensor for Nissan Versa & Versa Note 1.6L (2012-2017) | 234-9106 234-4535

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

2Pcs Air Fuel Ratio Sensor for Subaru Forester Impreza XV Crosstrek (2011-2014) | 234-9109 234-4513

2Pcs Air Fuel Ratio & O2 Sensor for Subaru Legacy Outback 2.5L (2010-2012) | 234-9097 234-4445

2Pcs Air Fuel Ratio & O2 Sensor for Toyota Corolla Matrix 1.8L (2011-2014) | 234-9112 234-4305

2Pcs O2 Sensor Set for Ford Focus 2.0L Non-Turbo (2012-2018) | 234-5068 234-4575

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

Suitable for 2Pcs Air Fuel Ratio Sensor for Mazda CX-7 2.3L Turbo (07-09) | 234-5012 234-4044

2Pcs O2 Sensor for Lexus RX330 Toyota Highlander (2004-2006) | 234-9042 234-4168

Suitable for 2Pcs Air Fuel Ratio & O2 Sensor for Mitsubishi Lancer Outlander Sport (2011-2018) | 234-5051 234-4114

2Pcs Air Fuel Ratio & O2 Sensor for Subaru Forester Impreza Outback 2.5L (04-05) | 234-9122 234-4732

2Pcs Air Fuel Ratio & O2 Sensor for Toyota Tundra Sequoia Tacoma (2013-2016) | 234-9145 234-4926

Suitable for 2Pcs O2 Sensor for Lexus RX330 Toyota Highlander (2004-2006) | 234-9042 234-4509

Suitable for 2Pcs Downstream O2 Sensor for Ford F-150 Explorer Expedition V8 (1997-2010) | 234-4127

2Pcs Air Fuel Ratio & O2 Sensor for Toyota Corolla 1.8L (2014-2019) | 234-9140 234-4921

2Pcs Air Fuel Ratio & O2 Sensor for Acura MDX 3.7L (2007-2009) | 234-5053 234-4351

2Pcs Air Fuel Ratio Sensor for Hyundai Accent Veloster Kia Rio 1.6L (2012-2017) | 234-5055 234-4568

2Pcs Air Fuel Ratio & O2 Sensor for Subaru Legacy Outback 2.5L (2013-2014) | 234-9136 234-4907

2Pcs Air Fuel Ratio & O2 Sensor for Toyota Corolla Matrix 1.8L (2009-2010) | 234-9056 234-4305

Suitable for 2Pcs O2 Sensor Upstream/Downstream (Passenger Side) for Jeep Wrangler 3.8L (2007-2010) | 234-4881 234-4587

2Pcs Air Fuel Ratio & O2 Sensor for Nissan Altima 2.5L (2013-2017) | 234-9133 234-4905

Suitable for 2Pcs O2 Sensor Up & Down for Suzuki Grand Vitara 2.7L V6 (2006-2008) | 234-9032 234-4387

2Pcs O2 Sensor for Hyundai Sonata Kia Optima Sorento 2.4L (2015-2019) | 234-5714 234-8030

Suitable for 2Pcs O2 Sensor Up & Down for Nissan Altima Maxima 3.5L V6 (2010-2013) | 234-9096 234-4380

2Pcs Downstream O2 Sensor for Cadillac Escalade Chevy Silverado GMC Yukon | 234-4256

2Pcs Air Fuel Ratio Sensor for Nissan Versa & Versa Note 1.6L (2012-2017) | 234-9106 234-4535

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