Set of 4 Oxygen O2 Sensor Upstream Downstream Replacement for Chevy Silverado Tahoe Suburban 2015-2018, for GMC Yukon XL 15-18 5.3L 6.2L for Sierra 1500 (Pls disregard the box product text)
Fitment - Partselect 2* 234-4940 Upstream & 2* 234-4974 Downstream Oxygen Sensor Replacement for Chevy Silverado 1500 4.3L 5.3L 6.2L 2014-2017, for Chevy Suburban 5.3L 2015-2018, for Chevy Tahoe 5.3L 2015-2018, for GMC Yukon 5.3L 6.2L 2015-2018, for GMC Yukon XL 5.3L 6.2L 2015-2018, for GMC Sierra 1500 4.3L 5.3L 6.2L 2014-2017
Shopping Tips - Part Number: 234-4940, 12659516, 234-4974, 12657188 (Before purchase this oxygen sensor, try using "amazon confirmed fit" to select your car model to see if it fits. Please check the year/make/model drop down bar and OE part numbers to confirm).
Product Specification - Package Includes 4 x Oxygen Sensor, Terminal Gender--Male, Pin Quantity--4, Wiring Harness Length: 234-4940: 19.69 inch, 234-4974: 13.39 inch , Type: Heated, Mounting style: Threaded-in.
Designed Advantage - ALL PARTSELECT oxygen sensor is made of stainless steel and other materials, which can effectively detect the oxygen content in it. It is rugged, to ensure long-term stable performance, improve vehicle fuel economy, help engine smooth operation.
Problem Solving - Why do you need to replace the oxygen sensor? A faulty oxygen sensor can lead to 1) Vehicle engine indicates a fault; 2) unstable idling; 3) lack of engine power; 4) sluggish acceleration; 5) black smoke coming out of the ducts. Replacing with Partselect oxygen sensor will help with these issues.