How to replace the Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1 on Cadillac Eldorado?

The first step to replace a heated Oxygen Sensor (HO2S) bank 1 sensor 1 involves supporting the vehicle while raising it, together with supporting the powertrain frame from the rear. The four rear frame bolts need removal while lowering the frame only three inches below its original position. Before removal disconnect the rear Oxygen Sensor's electrical connector and remember that an engine temperature above 48°c (120°F) will make the task easier. The next step is to pull out the Oxygen Sensor which fits inside the rear Exhaust Manifold. The sensor installation needs special anti-seize compound on its threads; check if the new sensor already has this compound or if used sensors require treatment with p/n 5613695 or equivalent compound. Each new service Oxygen Sensor must arrive with anti-seize compound but reused sensors need anti-seize compound p/n 5613695 or its equivalent for coating. Secure the rear Oxygen Sensor into the rear Exhaust Manifold using 41 n.m (30 lb ft) of torque. Use the rear Oxygen Sensor connector to begin; raise the frame and tighten all four rear frame bolts to 100 n.m (74 lb ft) before you lower the vehicle.

OEM Cadillac Eldorado Oxygen Sensor

Oxygen O2 Sensor

Select Vehicle by Model
Select Vehicle by VIN

Select Vehicle by Model

Make

Model

Year

Select Vehicle by VIN

For the most accurate results, select vehicle by your VIN (Vehicle Identification Number).

8 Oxygen Sensors found

View related parts
Cadillac Eldorado Oxygen Sensor Part Number: 19211435
$52.82 MSRP: $164.76
You Save: $111.94 (68%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor Assembly, Oxygen; Sensor, Computer Control Sensors
- Replaces: 05613719, 25165116, 19178940, 19178746, 25106169, 5613719, 25165119
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1988-1993 Cadillac Eldorado | Base, Biarritz, Spring Edition, Touring | 8 Cyl 4.5 L GAS, 8 Cyl 4.9 L GAS
- 1984 Cadillac Eldorado | Base, Biarritz, Cabriolet, Touring | 8 Cyl 4.1 L GAS, 8 Cyl 5.7 L DIESEL
View related parts
Cadillac Eldorado Oxygen Sensor Part Number: 19178958
$65.65 MSRP: $133.34
You Save: $67.69 (51%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor, Computer Control Sensors; Front Oxygen Sensor; Manifold
- Replaces: 25178022, 25312203, 25312211, 25164488
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1996-1998 Cadillac Eldorado | Base, ESC, ETC | 8 Cyl 4.6 L GAS
View related parts
Cadillac Eldorado Oxygen Sensor Part Number: 12559850
$59.96 MSRP: $121.78
You Save: $61.82 (51%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor, Computer Control Sensors; Front Oxygen Sensor
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2000-2002 Cadillac Eldorado | ESC, ETC | 8 Cyl 4.6 L GAS
View related parts
Cadillac Eldorado Oxygen Sensor Part Number: 5613719
$52.82 MSRP: $164.76
You Save: $111.94 (68%)
Ships in 1 Business Day
ADD TO CART
Product Specifications
- Other Name: Sensor Assembly, Oxygen; Sensor
- Replaced by: 19211435
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1984 Cadillac Eldorado | Base, Biarritz, Cabriolet, Touring | 8 Cyl 4.1 L GAS, 8 Cyl 5.7 L DIESEL
View related parts
Cadillac Eldorado Oxygen Sensor, Driver Side Part Number: 19355308
$71.31 MSRP: $144.84
You Save: $73.53 (51%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor, Computer Control Sensors
- Position: Driver Side
- Replaces: 19178928, 25161131, 25312197
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1996-1999 Cadillac Eldorado | Base, ESC, ETC | 8 Cyl 4.6 L GAS
View related parts
Cadillac Eldorado Oxygen Sensor Part Number: 19178939
$50.91 MSRP: $143.32
You Save: $92.41 (65%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor, Computer Control Sensors
- Replaces: 25132086, 25165311, 25312178
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1993-1995 Cadillac Eldorado | Base, ETC, Sport, Touring | 8 Cyl 4.6 L GAS
View related parts
Cadillac Eldorado Oxygen Sensor Part Number: 12559849
$58.70 MSRP: $104.83
You Save: $46.13 (44%)
Product Specifications
- Other Name: Sensor, Computer Control Sensors
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2000-2002 Cadillac Eldorado | ESC, ETC | 8 Cyl 4.6 L GAS
View related parts
Cadillac Eldorado Oxygen Sensor Part Number: 19178945
Product Specifications
- Other Name: Sensor, Computer Control Sensors
- Replaces: 25315373
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1999 Cadillac Eldorado | ESC, ETC | 8 Cyl 4.6 L GAS

Cadillac Eldorado Oxygen Sensor

Want to cut long-term maintenance and repair costs? Choose OEM Oxygen Sensor. Those parts deliver top durability you can trust. On our site, you'll find a huge catalog of genuine Cadillac Eldorado parts. Prices are unbeatable, so you can keep more in your pocket. Every OEM Cadillac Eldorado Oxygen Sensor includes a manufacturer's warranty. You can also get an easy return policy that keeps buying risk free. Fast delivery, get your car on the road quickly. It's simple to search, compare, and order. Stop guessing about quality or fit. Order today and save with parts that last.

The Oxygen Sensor is a crucial component of Cadillac Eldorado cars as it regulates the amount of remaining oxygen in the exhaust emissions so as to enhance the proportionate mixture of air and fuel in the vehicles for superior performance and less polluting of the environment. It produces a voltage signal in relation to the level of the oxygen present and this signal is used by the engine control computer to alter the pulse wide of the fuel injector. It also provides this engine function as a feedback system called 'Closed loop' thus improving the efficiency of the catalytic converter. Most Cadillac Eldorado versions use zirconium dioxide for oxygen sensors that can be either narrow-band or wide-band. The narrow-band sensors give the inputs in the form of rich/lean signals and the wide-band sensors give a wider range inputs of the air-fuel mixture. The main difference is in the work range and the method of signal generation, and the sensors of the wide band provide more accurate information. However, they get contaminated with time and thereby cause higher emissions and a potential problem with the vehicle's performance.

Cadillac Eldorado Oxygen Sensor Parts Questions & Experts Answers

Oxygen Sensor
12559850
Q: How to replace the Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1 on Cadillac Eldorado?
A:
The first step to replace a heated Oxygen Sensor (HO2S) bank 1 sensor 1 involves supporting the vehicle while raising it, together with supporting the powertrain frame from the rear. The four rear frame bolts need removal while lowering the frame only three inches below its original position. Before removal disconnect the rear Oxygen Sensor's electrical connector and remember that an engine temperature above 48°c (120°F) will make the task easier. The next step is to pull out the Oxygen Sensor which fits inside the rear Exhaust Manifold. The sensor installation needs special anti-seize compound on its threads; check if the new sensor already has this compound or if used sensors require treatment with p/n 5613695 or equivalent compound. Each new service Oxygen Sensor must arrive with anti-seize compound but reused sensors need anti-seize compound p/n 5613695 or its equivalent for coating. Secure the rear Oxygen Sensor into the rear Exhaust Manifold using 41 n.m (30 lb ft) of torque. Use the rear Oxygen Sensor connector to begin; raise the frame and tighten all four rear frame bolts to 100 n.m (74 lb ft) before you lower the vehicle.