Get a clear breakdown of oxygen sensor replacement costs. We explore the price of parts and labor for different scenarios, and show you how to save money by choosing the...
Read more...
Putting off an O2 sensor replacement can start a chain reaction of damage. Learn about the step-by-step consequences, from plummeting fuel economy to complete catalytic converter failure, and the shocking...
Read more...
Discover the true risks of ignoring a faulty oxygen sensor. This article explains why driving with a bad O2 sensor is more than an inconvenience—it can severely damage your catalytic...
Read more...
oxygen sensor Introduction Your car is a complex machine that relies on a network of sensors to run efficiently. Among the most critical is the oxygen sensor, often...
Read more...
Open Loop vs Closed Loop Engine Control: How Your Engine's "Brain" Works
Understand the differences between open and closed loop engine control systems, their working principles, applications, and impact on performance. Automotive-leaderstore expert guide.
How to Use an OBD-II Scanner: Your DIY Guide to Car Diagnostics
Learn how to use an OBD-II scanner like a pro. This step-by-step guide from Automotive-leaderstore covers reading codes, understanding their meanings, and performing effective diagnostics to save time and money.
Air-Fuel Ratio: The Heartbeat of Your Engine's Performance and Efficiency
Discover why the air-fuel ratio is critical for engine performance, efficiency, and emissions. Learn about stoichiometric ratios, engine control strategies, and maintenance tips. Get quality parts at Automotive-leaderstore
A Professional Guide to Diagnosing and Resolving O2 Sensor Trouble Codes in Your Car
Learn how to diagnose and fix car O2 sensor trouble codes like P0130 and P0420. This guide covers symptoms, a 5-step diagnostic process, and replacement tips. Find reliable O2 sensors...
Oxygen Sensors and Fuel Efficiency: Maximize Your Vehicle’s Performance
Discover how oxygen sensors optimize fuel efficiency, signs of failure, and practical tips to improve fuel economy. Expert advice from Automotive-leaderstore.
Catalytic Converters and O2 Sensors: A Symbiotic Relationship for Cleaner Emissions
Explore the symbiotic relationship between catalytic converters and O2 sensors. Learn how they reduce emissions, improve fuel efficiency, and ensure compliance with environmental standards. Automotive-leaderstore experts explain.
High Fuel Bills/Emissions? Premium Oxygen Sensor Fixes
This article notes that abnormal fuel consumption, a persistent "check engine" light, or failed emission tests in vehicles usually stem from a faulty oxygen sensor—this is both troublesome and costly...
Open Loop vs Closed Loop Engine Control: How Your Engine's "Brain" Works
Understand the differences between open and closed loop engine control systems, their working principles, applications, and impact on performance. Automotive-leaderstore expert guide.
How to Use an OBD-II Scanner: Your DIY Guide to Car Diagnostics
Learn how to use an OBD-II scanner like a pro. This step-by-step guide from Automotive-leaderstore covers reading codes, understanding their meanings, and performing effective diagnostics to save time and money.
Air-Fuel Ratio: The Heartbeat of Your Engine's Performance and Efficiency
Discover why the air-fuel ratio is critical for engine performance, efficiency, and emissions. Learn about stoichiometric ratios, engine control strategies, and maintenance tips. Get quality parts at Automotive-leaderstore
A Professional Guide to Diagnosing and Resolving O2 Sensor Trouble Codes in Your Car
Learn how to diagnose and fix car O2 sensor trouble codes like P0130 and P0420. This guide covers symptoms, a 5-step diagnostic process, and replacement tips. Find reliable O2 sensors...
Oxygen Sensors and Fuel Efficiency: Maximize Your Vehicle’s Performance
Discover how oxygen sensors optimize fuel efficiency, signs of failure, and practical tips to improve fuel economy. Expert advice from Automotive-leaderstore.
Catalytic Converters and O2 Sensors: A Symbiotic Relationship for Cleaner Emissions
Explore the symbiotic relationship between catalytic converters and O2 sensors. Learn how they reduce emissions, improve fuel efficiency, and ensure compliance with environmental standards. Automotive-leaderstore experts explain.
High Fuel Bills/Emissions? Premium Oxygen Sensor Fixes
This article notes that abnormal fuel consumption, a persistent "check engine" light, or failed emission tests in vehicles usually stem from a faulty oxygen sensor—this is both troublesome and costly...
Frequently asked questions
What is the return policy?
This store implements a 30-day return and exchange policy.
Our goal is for every customer to be completely satisfied with their purchase. If you have any concerns, please let us know at any time. We will do our utmost to resolve the issue together with you.
When will I get my order?
Orders may arrive as soon as the same day, or within three days at the latest.
We will ship your order promptly. Once dispatched, you will receive an email with detailed tracking information. Delivery times vary depending on your location.
Where are your products manufactured?
Our products are manufactured both locally and globally. We carefully select our manufacturing partners to ensure our products are high quality and a fair value.
How much does shipping cost?
Shipping is calculated based on your location and the items in your order. You will always know the shipping price before you purchase.
🚦 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
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
Engine size
We’ll confirm:
Upstream or downstream
Correct connector
Proper OEM reference number
Federal vs. California emissions compatibility
Q5: What’s the difference between OEM and aftermarket ignition coils?
OEM: Same quality as the factory part; long-lasting
High-quality aftermarket: Close to OEM but more affordable
