How to replace the Heated Oxygen Sensor (HO2S) 1 on 2003 Chevrolet Malibu?

Before starting heated Oxygen Sensor (HO2S) 1 replacement work begin by disconnecting the electrical connector. When the engine temperature falls below 48°c (120°F) the heated Oxygen Sensor can be challenging to remove by hand. Use the Oxygen Sensor socket (J 39194-B) following these steps to prevent damaging Exhaust Manifold or Exhaust Pipe threads. Apply anti-seize compound (P/N 5613695 or similar) to heated Oxygen Sensor/catalyst monitor threads before installation because specialized anti-seize with graphite-suspension fits fluid and glass beads works best. The compound is already present on new service sensors. Prior to reinstalling removed sensors apply anti-seize compound to their threads. The pre-catalytic converter ho2s should be installed while its torque set to 31 lb ft (1 to 42 N.m) then reconnect its electrical connector.

OEM 2003 Chevrolet Malibu Oxygen Sensor

Oxygen O2 Sensor

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2003 Chevrolet Malibu Oxygen Sensor
Part Number: 12559850
$58.78 MSRP: $119.40
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Product Specifications
- Other Name: Sensor, Computer Control Sensors; Front Oxygen Sensor
- Item Weight: 0.50 Pounds
- Item Dimensions: 8.4 x 3.3 x 3.2 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 12559850
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2003 Chevrolet Malibu Submodels:
- Base, LS | 6 Cyl 3.1 L GAS
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2003 Chevrolet Malibu Oxygen Sensor
Part Number: 19355309
Product Specifications
- Other Name: Sensor, Computer Control Sensors
- Replaces: 25313961, 19178931, 25164730, 25312206
- Item Weight: 0.70 Pounds
- Item Dimensions: 7.9 x 2.1 x 2.4 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 19355309
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2003 Chevrolet Malibu Submodels:
- Base, LS | 4 Cyl 2.4 L GAS, 6 Cyl 3.1 L GAS

2003 Chevrolet Malibu Oxygen Sensor

With a comprehensive array of OEM 2003 Chevrolet Malibu Oxygen Sensor, from fuel pumps to door handles, our website is a one-stop-shop for your needs. All our genuine 2003 Chevrolet Malibu Oxygen Sensor are backed by the manufacturer's warranty and are offered at competitive prices in the market. Rest assured, you can shop with complete confidence.

2003 Chevrolet Malibu Parts Questions & Experts Answers

Q: How to replace the Heated Oxygen Sensor (HO2S) 1 on 2003 Chevrolet Malibu?
A: Before starting heated Oxygen Sensor (HO2S) 1 replacement work begin by disconnecting the electrical connector. When the engine temperature falls below 48°c (120°F) the heated Oxygen Sensor can be challenging to remove by hand. Use the Oxygen Sensor socket (J 39194-B) following these steps to prevent damaging Exhaust Manifold or Exhaust Pipe threads. Apply anti-seize compound (P/N 5613695 or similar) to heated Oxygen Sensor/catalyst monitor threads before installation because specialized anti-seize with graphite-suspension fits fluid and glass beads works best. The compound is already present on new service sensors. Prior to reinstalling removed sensors apply anti-seize compound to their threads. The pre-catalytic converter ho2s should be installed while its torque set to 31 lb ft (1 to 42 N.m) then reconnect its electrical connector.

Related 2003 Chevrolet Malibu Parts

Alternate Year Models

2002 Chevrolet Malibu Oxygen Sensor 2004 Chevrolet Malibu Oxygen Sensor