Spectra Premium Auto Parts

Spectra Premium

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<p>Your O2 sensors control everything from fuel economy to emissions. They tell your engine computer exactly how much fuel to inject by measuring oxygen levels in your exhaust. When they go bad, you'll feel it in your wallet at the gas pump and see it when your check engine light comes on.</p><h2 style="color: #da3b1f; font-size: 28px; margin: 35px 0 20px 0; padding-bottom: 10px; border-bottom: 3px solid #da3b1f;">Replacement Oxygen Sensor: What It Does for Fuel Economy and Emissions</h2><p>A replacement oxygen sensor (also called an O2 sensor) measures oxygen content in exhaust gases and reports that data to the engine control unit (ECU)&mdash;your vehicle&rsquo;s engine computer. Using this signal, the ECU adjusts the air fuel mixture to maintain the correct air fuel ratio. When oxygen sensors work correctly, they support engine efficiency, smoother engine performance, and better fuel economy while reducing harmful emissions across the vehicle&rsquo;s emissions system.</p><p>Your O2 sensors control everything from fuel economy to emissions. They tell your engine computer exactly how much fuel to inject by measuring oxygen levels in your exhaust. When they go bad, you'll feel it in your wallet at the gas pump and see it when your check engine light comes on.</p><p>When a sensor degrades, the signal can drift or respond slowly once the sensor reaches operating temperature. That can push the fuel mixture rich, creating unburnt fuel, higher exhaust emissions, and added load on the catalytic converter&mdash;often showing up as decreased fuel efficiency and drivability changes.</p><h2 style="color: #da3b1f; font-size: 28px; margin: 35px 0 20px 0; padding-bottom: 10px; border-bottom: 3px solid #da3b1f;">Bad Oxygen Sensor Symptoms You Shouldn&rsquo;t Ignore</h2><p>A bad oxygen sensor commonly triggers an illuminated check engine light (or engine light / check engine light). Beyond the light, you may notice poor gas mileage, poor acceleration, or rough idling&mdash;especially on modern vehicles where the ECU relies heavily on accurate oxygen feedback to stabilize the air-fuel strategy.</p><p>In many cases, the sensor doesn&rsquo;t fail instantly. The sensor slowly underreports or overreports oxygen levels, so the ECU keeps &ldquo;correcting&rdquo; in the wrong direction. Over time, that can reduce vehicle&rsquo;s performance, increase emissions output (and risk failing emissions testing), and contribute to potential damage in downstream components such as the catalytic converter.</p><div style="background: #fff3e6; border-left: 4px solid #da3b1f; padding: 20px; margin: 25px 0; border-radius: 4px;"><h3 style="color: #da3b1f; margin: 0 0 12px 0; font-size: 20px;">Watch For These Warning Signs:</h3><p style="margin: 8px 0;"><strong>Check engine light:</strong> Codes P0130-P0167 mean sensor problems</p><p style="margin: 8px 0;"><strong>Terrible gas mileage:</strong> 20-40% worse fuel economy overnight</p><p style="margin: 8px 0;"><strong>Rough idle:</strong> Engine shakes, stalls, or surges at stop lights</p><p style="margin: 8px 0;"><strong>Failed emissions:</strong> Won't pass smog test, can't register your vehicle</p><p style="margin: 8px 0;"><strong>Rotten egg smell:</strong> Catalytic converter overheating from bad fuel mixture</p></div><h2 style="color: #da3b1f; font-size: 28px; margin: 35px 0 20px 0; padding-bottom: 10px; border-bottom: 3px solid #da3b1f;">How to Choose the Right O2 Sensor and Install for Proper Functionality</h2><p>Selection starts with fitment and position. Many vehicles use multiple oxygen sensors, including upstream units that influence air-fuel control and downstream sensors that help monitor catalytic converter efficiency. Confirm the correct location (upstream/downstream) and match the sensor to your exact vehicle model to ensure connector type, harness length, and the correct heater circuit specification.</p><p>For long-term proper functionality, also address common causes of early sensor failure:</p><ul><li><strong>Exhaust leaks near the exhaust pipe can pull in outside air, skewing readings.</strong></li><li><strong>Heat and vibration can damage wiring or connections (even a weak battery can expose marginal heater-circuit issues).</strong></li><li><strong>Contamination can bias readings and lead the ECU to mis-adjust the mixture.</strong></li></ul><p>Replacing the correct sensor and ensuring the exhaust path is sealed helps the ECU monitor accurately, adjust efficiently, and restore stable fuel control&mdash;delivering a more cost-effective repair over time (including fewer repeat labor costs).</p>

Oxygen Sensor

Car Oxygen Sensor Price From $24.99 | A-Premium

Accelerator Cable

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Air Cleaner

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Air Filter Box

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Mass Air Flow Sensors/Car MAF Sensors | A-Premium

Air Flow Sensor

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Air Intake Duct

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Air Intake Hose

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Air Intake Manifold Actuator Control Solenoid

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Air Intake Manifold Flap Adjuster

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Air Intake Manifold Runner Control Sensor

Air Intake Resonator

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Electric Vacuum Pump

Engine & Cabin Air Filter

Engine Air Duct Assembly

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Engine Air Filter

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Intake Manifold

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Intake Manifold Flap Actuator

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Intake Manifold Repair Bracket

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Intake Manifold Runner Control Valve

Intake Manifold Seal Gasket

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Intercooler

Intercooler Hose

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Pressure Sensor

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Supercharger Pulley Drive Unit

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Supercharger Snout Rebuild Kit

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Throttle Body

Throttle Cable

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Throttle Position Sensor

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Turbocharger

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Turbocharger Gasket Kit

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Turbocharger Oil Line

Turbocharger Wastegate Actuator

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Vacuum Pump

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Air Filters & Intake Systems

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Camshaft Adjuster

Camshaft Adjuster Cover

Camshaft Kit

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Camshaft Timing Gear

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Camshafts

Chain Tensioner Adjuster

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Cylinder Head

Cylinder Head Assembly

Cylinder Head Gasket

Eccentric Shaft Actuator

Engine Timing Belt

Engine Timing Cover Gasket

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Engine Valve Cover

Engine Valve Cover Gasket

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Harmonic Balancer

Rocker Arm

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Rocker Arm Shaft Lifter Assembly

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Timing Belt Kit

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Timing Chain Gear

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Timing Chain Kit

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Timing Cover

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Timing-Control Valve Solenoid

Valve Cover Gasket

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Valve Lifter Guides

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Valve Lifters Tappet

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Cams, Timing & Valvetrain

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Belt Tensioner

Coolant Level Sensor

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Crank Installer Tool

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Crankcase Breather Hose

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Crankcase Breather Valve

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Crankshaft Position Sensor

Crankshaft Pulley

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Engine Oil Dipstick

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Engine Oil Dipstick Tube

Engine Oil Filter

Engine Oil Pan Gasket

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Flywheel

Harmonic Balancer Crankshaft Hub

Knock Sensor

Oil Baffle

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Oil Cooler

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Oil Cooler Line

Oil Drip Pan

Oil Filler Cap

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Oil Filter

Oil Filter Base

Oil Filter Cover

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Oil Filter Housing

Oil Filter Housing Cover

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Oil Level Sensor

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Oil Pan

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Oil Pump

Oil Pump Drive Gear Shaft

Oil Pump Pickup Tube

Oil Separator

Serpentine Belt

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Cranks, Pistons, Oil & Components

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Camshaft Position Sensor

Camshaft Position Sensor & Magnet Kit

Connector Plug

Distributor Cap

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Electronic Ignition System

Engine Valve Covers & Ignition Coils Kits

Glow Plug

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Glow Plug Relay Module

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Ignition Coil

Ignition Coils & Spark Plugs & Wires Kits

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Ignition Coils & Spark Plugs Kits

Ignition Coils & Wires Kits

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Ignition Distributor

Ignition Lock Cylinder

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Ignition Starter Switch

Ignition Switch Actuator

Kill Switch

Knock Detonation Sensor

Relay

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Spark Plug

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Spark Plug Wire

Electronic Control Modules, Ignition & Distributors

Engine Wiring Harness

Intake Manifold Repair Kit

Pulley

Engine Components & Accessories

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Active Grille Shutter Actuator

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Auxiliary Water Pump

Electric Engine Water Pump

Engine Coolant Air Bleeder Valve

Engine Coolant Pipe

Engine Coolant Shut Off Valve

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Expansion Tank

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Expansion Tank Mounting Plate

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Engine Cooling

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The engine comprises many essential elements such as the lower cylinder block, upper cylinder head(s), and the cooling & lubricating systems. With A-Premium aftermarket engine components, you can expect that your engine deliver years of reliable performance. We offer a diverse selection of engine components from air filters and ignition coils (kits) to fuel pumps to cater to your needs.

Spectra Premium Oxygen Sensor