NGK 23139 Oxygen Sensor

Perfect OEM fit. Fixed a check engine light. In fact the cable is about 4 to 6 inches longer allowing you to place it and secure it even better than the original part. Please be aware of the right part to replace depending on the code you get. For Jeep Liberty 02/06 you have 4 Oxygen Sensor one before and after each Catalytic Converter on both Catalytic identify as Bank 1 for the Driver side and Bank 2 for the Passenger Side. There is another after burn Catalytic Converter that goes to te exhaust (parts not mention OEM brand is NTK for Direct Fit. In my case, here are the part numbers and placement for Jeep Liberty MY 02/06 according to the error codes P0031 read in my ODB II. To fix this you’ll need the right part since the position and length of the cable of the sensor are different. In this case P0031 was related to a “HOS2 Heater Control Circuit Low Bank Sensor 1”. In this Case B1S1 stands for Block 1 Sensor 1z With that info I was able to buy the part, but needed to know which one was Bank 1 or Bank 2 as well as Low or High. Hope this info help you clarify which one to replace. BANK 1 = Driver Side /LEFT PART # PLACEMENT 2139 B1S1 (Before Catalytic Driver side) 23141 B1S2 (After Catalytic Driver side) BANK 2 = Passenger Side/ RIGHT PART # PLACEMENT 23138 B2S1 (Before Cat. Passenger Side) 23142 B2S2 (After Cat. Passenger Side)

Good product. OEM QUALITY, direct fit.good price

Works good on the correct bank (wire length is different for each bank), communicating no problem

Perfect fit

Will NOT fit 2002 Jeep Wrangler 4.0 TJ. The sensor fit in the header but the electrical plug is wrong. The alignment groves do NOT line up. If I would have checked the picture above I would have known that. Because I am stubborn I tried cutting the outer edge of the plug so it would plug in anyway. It does plug in but I am still getting the code. Not sure if the wires are in a different order on this one or if I have other issues. I'm sure the sensor is fine just not for a 2002 inline 6 Jeep TJ

Perfect fit. Sprayed old one with PB Blaster. Soaked for 2 days. Installed new NTK. Perfect plug and sensor end. 2003 Jeep Wrangler Sahara 4.0 liter. For Bank 1, Sensor 1...Driver side.

NTK/NGK oxygen sensors are the same as those installed by the factory for Jeep vehicles. Many mechanics contend that other brands of O2 sensors, like Bosch, don't work well in Jeeps, and that the OEM sensors are the only ones that do. OEM (Mopar) sensors can be bought through online Jeep parts houses, but cost around $95. The NTK sensors can be bought on Amazon for a third of the price of the ones with a Mopar logo on them. The one I bought from Amazon and installed to replace the OEM sensor on my Jeep worked well and was an exact fit. If the sensor is in a tight spot, you can buy an oxygen sensor socket, but I didn't need one for my particluar application - just an adjustable wrench did the trick.

NGK 23139 Bank 1 Sensor 1 will not fit 2001 Jeep Wrangler Sport 4.0L. Sensor fits manifold, however sensor plug side grooves are parallel, and should be offset to fit OEM plug. So the plug is not compatible with OEM male side of plug.

excelente articulo funciona muy bien

All plugs were incompatible with my jeep despite meeting their own year model recommendations. I had to cut the old plugs just to install. Not happy about that.

The housing was off and would not fit, had the same pattern shape but off. Useless for my 2001 dosge ram 1500 .

Muy satisfecho con el producto, llegó en tiempo y forma