ACDelco Oxygen Sensor 19473526 - Gold OE-Style Exhaust O2 Sensor for GM, Direct-Fit, Improved Fuel Control

ACDelco Gold 19473526 is a premium oxygen (O2) exhaust sensor engineered as an OE-style replacement to monitor unburned oxygen and relay accurate exhaust information to your vehicle's engine control unit.

This ACDelco Gold (Professional) oxygen sensor provides a direct-fit alternative to original equipment parts, designed to restore proper air–fuel feedback for smoother running, better emissions control, and more consistent fuel management. Built to the manufacturer’s specifications, the 19473526 sensor is a dependable option for General Motors vehicles and many other makes where this application fits. It’s manufactured and tested to meet expectations for fit, form, and function, and may appear under the ACDelco Professional naming in some catalogs.

How does this oxygen sensor affect engine performance?

The oxygen sensor measures the amount of oxygen in the exhaust stream and sends that signal to the engine control unit (ECU). The ECU uses this data to adjust fuel injection and ignition timing, helping preserve driveability and throttle response. A properly functioning sensor prevents the engine from running too rich or too lean, which can reduce rough idling and hesitation.

• Provides real-time oxygen readings to the ECU for fuel trim adjustments.
• Helps stabilize idle and improves throttle response.
• Reduces the risk of fuel over-consumption from incorrect air–fuel ratios.

Will this ACDelco Gold sensor fit my vehicle?

The 19473526 is offered as an OE-style replacement intended to meet original fitment specifications for many General Motors models and a variety of other vehicles where this part number applies. Because fitment can vary by engine, model year and emissions package, always verify compatibility with your vehicle’s VIN or parts catalog before purchasing. Installation requires matching connector type, thread size and sensor length to the vehicle’s exhaust port.

• Manufactured to meet GM fit, form, and function standards.
• Compatible with many makes and models where this part number is specified.
• Confirm fitment using vehicle VIN or parts lookup prior to installation.

What are the benefits of choosing the ACDelco Gold version?

ACDelco Gold (Professional) sensors are positioned as premium aftermarket replacements that follow original engineering criteria. They are built and tested to provide consistent sensor response and durability under exhaust conditions. Choosing ACDelco Gold helps ensure a closer match to OE performance than many generic replacements, improving reliability and reducing rework or repeat failures.

• Premium construction aimed at consistent sensor response and longevity.
• Backed by General Motors engineering standards and quality controls.
• Often sold as a direct alternative to former ACDelco Professional parts.

How difficult is installation and what should I expect?

Installation is straightforward for anyone familiar with exhaust components and basic vehicle maintenance, but it often requires working under the vehicle and disconnecting the electrical connector. Use anti-seize on the threads if recommended, and torque to the vehicle manufacturer’s specification to avoid damage. If you’re unsure, a professional mechanic can complete the swap and confirm proper operation with a post-installation scan.

• Requires the correct socket and access to the exhaust sensor port.
• Electrical connector must match vehicle wiring harness for plug-and-play fit.
• Post-installation ECU scan recommended to confirm sensor readings and clear fault codes.

Who is this for: The ACDelco Gold 19473526 oxygen sensor is for owners and technicians who want an OE-style, high-quality replacement for faulty or aging O2 sensors. It suits drivers of General Motors vehicles and other compatible makes seeking reliable sensor performance, aftermarket professionals stocking replacement parts, and DIY enthusiasts who prioritize correct fit, dependable function, and a part manufactured to GM’s quality expectations.