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OE Replacement

Walker 350-84003 Oxygen Sensor Set

Brand	Walker 350-84003
11589	Metric
Heated	Yes
Sensor Type	Narrow-band
Universal Or Specific Fit	Specific
Grade Type	Standard replacement
Wrench Size	22
Thread Size	M18 - 1.5
Mounting Type	Threaded
Product line	OE Replacement
Fits	Cadillac, Chevrolet, and GMC · 54 vehicles

OE replacement. Designed and tested to meet or exceed original equipment specifications.

Standard replacement. Narrow-band heated sensors for reliable emissions control.

Threaded mount. Easy installation with a secure, metric M18 x 1.5 fit.

$153.18Free shipping

In stock · usually ships same day before 1pm CST

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OE Replacement Oxygen Sensor Set

Walker OE Replacement Oxygen Sensor Set 350-84003 is a specific-fit, heated narrow-band O2 sensor kit for vehicles that need complete upstream and downstream oxygen sensor replacement. It is built to meet original equipment specifications for fuel control, engine performance, and emissions monitoring.

Compatible With select 2014-2020 Chevrolet, GMC, and Cadillac applications, including Chevrolet Silverado 1500, GMC Sierra 1500, Chevrolet Express 2500, and GMC Savana 3500. The Walker OE Replacement line focuses on direct-fit service parts for routine maintenance and emissions repair.

Key Features

Walker OE Replacement part number 350-84003
Heated narrow-band oxygen sensor design
Specific-fit, threaded mounting style
Metric sensor with M18 - 1.5 thread size
22 mm wrench size
Standard replacement grade for OE-style service
Designed for gas and diesel engine applications
Built for complete oxygen sensor replacement on supported vehicles

Product Details

Walker Products oxygen sensor kits are engineered to restore accurate air-fuel ratio feedback so the engine control system can manage combustion and emissions properly. This matters on trucks, vans, and SUVs that rely on precise O2 sensor input for drivability, fuel economy, and emissions compliance. Part number 350-84003 is a direct replacement solution for vehicles that require a full oxygen sensor service rather than a single-sensor repair.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

Check engine light related to oxygen sensor performance
Rough idle or inconsistent engine response from faulty O2 feedback
Poor fuel economy caused by inaccurate air-fuel ratio readings
Increased emissions from worn upstream or downstream sensors
Maintenance needs on high-mileage Chevrolet Silverado 1500 and GMC Sierra 1500 models

Installation Notes and Tips

Verify sensor thread size, mounting type, and engine application before installation. This Walker 350-84003 set uses a threaded M18 - 1.5 design with a 22 mm wrench size, so proper removal tools and anti-seize practices should follow the vehicle service procedure. Confirm the exact model year and emissions configuration for Chevrolet Express, GMC Savana, Cadillac Escalade, Chevrolet Tahoe, and related applications before ordering.

Fits 2016-2020 Chevrolet Express 2500, complete set (contains all required upstream and downstream oxygen sensors); OE Replacement
Fits 2016-2020 Chevrolet Express 3500, complete set (contains all required upstream and downstream oxygen sensors); OE Replacement
Fits 2016-2020 GMC Savana 2500, complete set (contains all required upstream and downstream oxygen sensors); OE Replacement
Fits 2016-2020 GMC Savana 3500, complete set (contains all required upstream and downstream oxygen sensors); OE Replacement
Fits 2014-2019 Chevrolet Silverado 1500, complete set (contains all required upstream and downstream oxygen sensors); OE Replacement
Fits 2014-2019 GMC Sierra 1500, complete set (contains all required upstream and downstream oxygen sensors); OE Replacement
Fits 2014-2017 Chevrolet Cheyenne, complete set (contains all required upstream and downstream oxygen sensors); OE Replacement
Fits 2014-2017 Chevrolet Silverado 2500, complete set (contains all required upstream and downstream oxygen sensors); OE Replacement
Fits 2014-2017 GMC Sierra, complete set (contains all required upstream and downstream oxygen sensors); OE Replacement
Fits 2015 Cadillac Escalade, complete set (contains all required upstream and downstream oxygen sensors); OE Replacement
Fits 2015 Cadillac Escalade ESV, complete set (contains all required upstream and downstream oxygen sensors); OE Replacement
Fits 2015 Chevrolet Tahoe, complete set (contains all required upstream and downstream oxygen sensors); OE Replacement
Fits 2015 GMC Yukon, complete set (contains all required upstream and downstream oxygen sensors); OE Replacement
Fits 2015 GMC Yukon XL, complete set (contains all required upstream and downstream oxygen sensors); OE Replacement

Quality Assurance

Walker Products designs these oxygen sensors to meet or exceed original equipment specifications and tests them for OE-level service performance. The OE Replacement line is intended for direct-fit maintenance on supported Chevrolet, GMC, and Cadillac vehicles, including Silverado 1500 and Sierra 1500 applications.

This part fits 54 vehicles

Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

Year	Make	Model	Liters	Cylinders	Fuel Type	Notes
2020	Chevrolet	Express 2500	6.0L	V8	—	Complete Set (Contains all required upstream and downstream oxygen sensors); OE Replacement
2020	Chevrolet	Express 3500	6.0L	V8	—	Complete Set (Contains all required upstream and downstream oxygen sensors); OE Replacement
2020	GMC	Savana 2500	6.0L	V8	—	Complete Set (Contains all required upstream and downstream oxygen sensors); OE Replacement
2020	GMC	Savana 3500	6.0L	V8	—	Complete Set (Contains all required upstream and downstream oxygen sensors); OE Replacement
2019	Chevrolet	Express 2500	6.0L	V8	—	Complete Set (Contains all required upstream and downstream oxygen sensors); OE Replacement
2019	Chevrolet	Express 3500	6.0L	V8	—	Complete Set (Contains all required upstream and downstream oxygen sensors); OE Replacement
2019	Chevrolet	Express 4500	6.0L	V8	—	Complete Set (Contains all required upstream and downstream oxygen sensors); OE Replacement
2019	Chevrolet	Silverado 1500	6.2L	V8	—	Complete Set (Contains all required upstream and downstream oxygen sensors); OE Replacement
2019	GMC	Savana 2500	6.0L	V8	—	Complete Set (Contains all required upstream and downstream oxygen sensors); OE Replacement
2019	GMC	Savana 3500	6.0L	V8	—	Complete Set (Contains all required upstream and downstream oxygen sensors); OE Replacement
2019	GMC	Sierra 1500	6.2L	V8	—	Complete Set (Contains all required upstream and downstream oxygen sensors); OE Replacement
2018	Chevrolet	Express 2500	6.0L	V8	—	Complete Set (Contains all required upstream and downstream oxygen sensors); OE Replacement
2018	Chevrolet	Express 3500	6.0L	V8	—	Complete Set (Contains all required upstream and downstream oxygen sensors); OE Replacement
2018	Chevrolet	Silverado 1500	6.2L	V8	—	Complete Set (Contains all required upstream and downstream oxygen sensors); OE Replacement
2018	GMC	Savana 2500	6.0L	V8	—	Complete Set (Contains all required upstream and downstream oxygen sensors); OE Replacement
2018	GMC	Savana 3500	6.0L	V8	—	Complete Set (Contains all required upstream and downstream oxygen sensors); OE Replacement
2018	GMC	Sierra 1500	6.2L	V8	—	Complete Set (Contains all required upstream and downstream oxygen sensors); OE Replacement
2017	Chevrolet	Cheyenne	6.2L	V8	—	Complete Set (Contains all required upstream and downstream oxygen sensors); OE Replacement
2017	Chevrolet	Express 2500	6.0L	V8	—	Complete Set (Contains all required upstream and downstream oxygen sensors); OE Replacement
2017	Chevrolet	Express 3500	6.0L	V8	—	Complete Set (Contains all required upstream and downstream oxygen sensors); OE Replacement
2017	Chevrolet	Express 4500	6.0L	V8	—	Complete Set (Contains all required upstream and downstream oxygen sensors); OE Replacement
2017	Chevrolet	Silverado 1500	6.2L	V8	—	Complete Set (Contains all required upstream and downstream oxygen sensors); OE Replacement
2017	Chevrolet	Silverado 2500	5.3L	V8	—	Complete Set (Contains all required upstream and downstream oxygen sensors); OE Replacement
2017	GMC	Savana 2500	6.0L	V8	—	Complete Set (Contains all required upstream and downstream oxygen sensors); OE Replacement
2017	GMC	Savana 3500	6.0L	V8	—	Complete Set (Contains all required upstream and downstream oxygen sensors); OE Replacement
2017	GMC	Sierra	6.2L	V8	—	Complete Set (Contains all required upstream and downstream oxygen sensors); OE Replacement
2017	GMC	Sierra 1500	6.2L	V8	—	Complete Set (Contains all required upstream and downstream oxygen sensors); OE Replacement
2016	Chevrolet	Cheyenne	6.2L	V8	—	Complete Set (Contains all required upstream and downstream oxygen sensors); OE Replacement
2016	Chevrolet	Express 2500	6.0L	V8	—	Complete Set (Contains all required upstream and downstream oxygen sensors); OE Replacement
2016	Chevrolet	Express 3500	6.0L	V8	—	Complete Set (Contains all required upstream and downstream oxygen sensors); OE Replacement
2016	Chevrolet	Express Cargo	6.0L	V8	—	Complete Set (Contains all required upstream and downstream oxygen sensors); OE Replacement
2016	Chevrolet	Express Pasajeros	6.0L	V8	—	Complete Set (Contains all required upstream and downstream oxygen sensors); OE Replacement
2016	Chevrolet	Silverado 1500	6.2L	V8	—	Complete Set (Contains all required upstream and downstream oxygen sensors); OE Replacement
2016	Chevrolet	Silverado 2500	5.3L	V8	—	Complete Set (Contains all required upstream and downstream oxygen sensors); OE Replacement
2016	GMC	Savana 2500	6.0L	V8	—	Complete Set (Contains all required upstream and downstream oxygen sensors); OE Replacement
2016	GMC	Savana 3500	6.0L	V8	—	Complete Set (Contains all required upstream and downstream oxygen sensors); OE Replacement
2016	GMC	Sierra	6.2L	V8	—	Complete Set (Contains all required upstream and downstream oxygen sensors); OE Replacement
2016	GMC	Sierra 1500	6.2L	V8	—	Complete Set (Contains all required upstream and downstream oxygen sensors); OE Replacement
2015	Cadillac	Escalade	6.2L	V8	FLEX	Complete Set (Contains all required upstream and downstream oxygen sensors); OE Replacement
2015	Cadillac	Escalade ESV	6.2L	V8	FLEX	Complete Set (Contains all required upstream and downstream oxygen sensors); OE Replacement
2015	Chevrolet	Cheyenne	6.2L	V8	—	Complete Set (Contains all required upstream and downstream oxygen sensors); OE Replacement
2015	Chevrolet	Silverado 1500	6.2L	V8	—	Complete Set (Contains all required upstream and downstream oxygen sensors); OE Replacement
2015	Chevrolet	Silverado 2500	5.3L	V8	—	Complete Set (Contains all required upstream and downstream oxygen sensors); OE Replacement
2015	Chevrolet	Suburban	5.3L	V8	—	Complete Set (Contains all required upstream and downstream oxygen sensors); OE Replacement
2015	Chevrolet	Tahoe	5.3L	V8	—	Complete Set (Contains all required upstream and downstream oxygen sensors); OE Replacement
2015	GMC	Sierra	6.2L	V8	—	Complete Set (Contains all required upstream and downstream oxygen sensors); OE Replacement
2015	GMC	Sierra 1500	6.2L	V8	—	Complete Set (Contains all required upstream and downstream oxygen sensors); OE Replacement
2015	GMC	Yukon	6.2L	V8	—	Complete Set (Contains all required upstream and downstream oxygen sensors); OE Replacement
2015	GMC	Yukon XL	6.2L	V8	—	Complete Set (Contains all required upstream and downstream oxygen sensors); OE Replacement
2014	Chevrolet	Cheyenne	6.2L	V8	—	Complete Set (Contains all required upstream and downstream oxygen sensors); OE Replacement
2014	Chevrolet	Silverado 1500	6.2L	V8	—	Complete Set (Contains all required upstream and downstream oxygen sensors); OE Replacement
2014	Chevrolet	Silverado 2500	5.3L	V8	—	Complete Set (Contains all required upstream and downstream oxygen sensors); OE Replacement
2014	GMC	Sierra	6.2L	V8	—	Complete Set (Contains all required upstream and downstream oxygen sensors); OE Replacement
2014	GMC	Sierra 1500	6.2L	V8	—	Complete Set (Contains all required upstream and downstream oxygen sensors); OE Replacement
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