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Subaru

Subaru engines are unique, and they require high-quality components to run their best. Automotive-LeaderStore provides specialized aftermarket engine parts, including precision O2 sensors and fuel management systems that provide accurate data and optimal combustion. Ensure your Subaru remains reliable on any terrain.

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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

Subaru

Filters

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

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

Suitable for 2Pcs Air Fuel Ratio & O2 Sensor for Subaru Forester WRX 2.0L (2014-2017)| 234-5178 234-4988

Suitable for Downstream O2 Sensor for Subaru Outback Legacy Impreza (02-09) | 234-4446, 22690AA500

2Pcs Air Fuel Ratio & O2 Sensor for Subaru Forester Impreza 2.5L (10-14) | 234-9108 234-4195

2Pcs Air Fuel Ratio & O2 Sensor for Subaru Impreza Outback 2.5L (2004-2008) | 234-9120 234-4446

Suitable for Upstream Air Fuel Ratio Sensor for Subaru Forester Impreza Crosstrek | 234-9109 22641AA610

Upstream Air Fuel Ratio Sensor for Subaru XV (GT) 2.0i FB20 (2018-2020) | 22641-AA760

2Pcs Air Fuel Ratio & O2 Sensor for Subaru Legacy Outback 2.5L (2015) | 234-9138 234-4907

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

4Pcs Fuel Injector Set for Subaru WRX STI Forester Impreza Legacy | 16611-AA370 195500-3910

Suitable for Upstream Air Fuel Ratio Sensor for Subaru Outback Legacy BRZ | 234-9138, 22641AA670

2Pcs Air Fuel Ratio & O2 Sensor for Subaru Forester Impreza 2.5L (2008-2010) | 234-9120 234-4195

Downstream O2 Sensor for Subaru BRZ Toyota 86 Scion FR-S 2.0L | 234-4908

Suitable for Upstream Air Fuel Ratio Sensor for Subaru Outback Forester Impreza 2.5L | 234-9015

2Pcs Air Fuel Ratio & O2 Sensor for Subaru Forester Impreza Outback 2.5L (03-04) | 234-9015 234-4706

Downstream O2 Sensor for Subaru WRX Forester Impreza Legacy | 234-4195 22690-AA900

Suitable for Downstream O2 Sensor for Subaru Forester Impreza Legacy 2.0L (05-08) | 22690AA891 22690AA831

Suitable for Upstream Air Fuel Ratio Sensor for Subaru Outback Forester Impreza 2.5L (2004-2005) | 234-9122, 22641AA150

Suitable for Upstream Air Fuel Ratio Sensor for Subaru WRX STI Impreza 2.5L | 234-9034 22641AA510

Suitable for Upstream Air Fuel Ratio Sensor for Subaru Legacy Outback 3.6L H6 | 234-9092 894670E080

Suitable for Downstream O2 Sensor for Subaru Forester Impreza Crosstrek 2.0L 2.5L | 234-4513 22690AA96A

Upstream Wideband O2 Sensor for Subaru Forester Impreza Outback 2.5L (2000-2002) | 17018

Suitable for Downstream O2 Sensor for Subaru Outback Legacy 2.5L (2013-2017) | 234-4907 22690AA96A

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

Subaru

Filters

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

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

Suitable for 2Pcs Air Fuel Ratio & O2 Sensor for Subaru Forester WRX 2.0L (2014-2017)| 234-5178 234-4988

Suitable for Downstream O2 Sensor for Subaru Outback Legacy Impreza (02-09) | 234-4446, 22690AA500

2Pcs Air Fuel Ratio & O2 Sensor for Subaru Forester Impreza 2.5L (10-14) | 234-9108 234-4195

2Pcs Air Fuel Ratio & O2 Sensor for Subaru Impreza Outback 2.5L (2004-2008) | 234-9120 234-4446

Suitable for Upstream Air Fuel Ratio Sensor for Subaru Forester Impreza Crosstrek | 234-9109 22641AA610

Upstream Air Fuel Ratio Sensor for Subaru XV (GT) 2.0i FB20 (2018-2020) | 22641-AA760

2Pcs Air Fuel Ratio & O2 Sensor for Subaru Legacy Outback 2.5L (2015) | 234-9138 234-4907

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

4Pcs Fuel Injector Set for Subaru WRX STI Forester Impreza Legacy | 16611-AA370 195500-3910

Suitable for Upstream Air Fuel Ratio Sensor for Subaru Outback Legacy BRZ | 234-9138, 22641AA670

2Pcs Air Fuel Ratio & O2 Sensor for Subaru Forester Impreza 2.5L (2008-2010) | 234-9120 234-4195

Downstream O2 Sensor for Subaru BRZ Toyota 86 Scion FR-S 2.0L | 234-4908

Suitable for Upstream Air Fuel Ratio Sensor for Subaru Outback Forester Impreza 2.5L | 234-9015

2Pcs Air Fuel Ratio & O2 Sensor for Subaru Forester Impreza Outback 2.5L (03-04) | 234-9015 234-4706

Downstream O2 Sensor for Subaru WRX Forester Impreza Legacy | 234-4195 22690-AA900

Suitable for Downstream O2 Sensor for Subaru Forester Impreza Legacy 2.0L (05-08) | 22690AA891 22690AA831

Suitable for Upstream Air Fuel Ratio Sensor for Subaru Outback Forester Impreza 2.5L (2004-2005) | 234-9122, 22641AA150

Suitable for Upstream Air Fuel Ratio Sensor for Subaru WRX STI Impreza 2.5L | 234-9034 22641AA510

Suitable for Upstream Air Fuel Ratio Sensor for Subaru Legacy Outback 3.6L H6 | 234-9092 894670E080

Suitable for Downstream O2 Sensor for Subaru Forester Impreza Crosstrek 2.0L 2.5L | 234-4513 22690AA96A

Upstream Wideband O2 Sensor for Subaru Forester Impreza Outback 2.5L (2000-2002) | 17018

Suitable for Downstream O2 Sensor for Subaru Outback Legacy 2.5L (2013-2017) | 234-4907 22690AA96A

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