Best O2 Sensors

[Broosedamoose]

So I need to replace my O2 sensors and was wondering what you think is the best brand. I think the stock sensors are made by Bosch but I could be mistaken.

 

[Dirtman]

Motorcraft or Bosch.

 

[DILLARD000]

Recently replace 3 OxygenSensors on my 2001 V6~4.0L~SOHC
Bosch invented OxygenSensors & supply Ford factories; they look identical to the originals.
Biggest issue was tight access to 2 of the 3 wiring harness connectors; patient+nibble fingers will help.
Soaking sensor+bung threads with penetrating oil overnight made them come out easy; the more rust you've got, the more cussing you'll do.
ElectricalTape, HeatShrink, BraidedTeflonWrap & ZipTies for sensor cable extra protection & to keep them away from exhaust heat.
Detailed info at

Engine Exhaust OxygenSensors

This 2001 Ford ExplorerSportTrac & V6~4.0L~SOHC engine has 3 OxygenSensors; they are also known as HEGO\HeatedExhaustGasOxygen, H02\HeatedOxygen, Lambda\NarrowBand Sensors; as located below. Sensor11+Sensor21, pic below, are between Rght+LeftManifolds & Rght+LeftCatConvertors, respectively...

2001fordexplorersporttrac.fandom.com

 

[07nhbpsi]

Denso or NTK make good sensors as well ...