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Please check fitment notes & description for accurate information.
Specification:
*Brand New
*Direct Plug-In Replacement.
*4 wire configuration
*Interchange Part Number: 9617178, 234-4012, SG454, SG236
*Length: 450 mm ( 17.7 inch)
*Warranty: 1 Year
*Built and tested to strict quality control standards
Fit Vehicles:
1994-1996 Buick Century V6 3.1L Upstream
1994-1996 Buick LeSabre V6 3.8L Upstream
1994-1997 Chevrolet Camaro V8 5.7L Upstream
1996 Chevrolet Express 1500 V6 4.3L Upstream
1996 Chevrolet Express 1500 V8 5.7L Upstream
1994-1996 Chevrolet Impala V8 5.7L Upstream
1999-2002 Chevrolet Silverado 1500 V6 4.3L Upstream
1999-2002 Chevrolet Silverado 1500 V8 4.8L Upstream
1999-2002 Chevrolet Silverado 1500 V8 5.3L Upstream
1999-2002 Chevrolet Silverado 2500 V8 5.3L Upstream
1996-2000 Chevrolet Tahoe V8 5.7L Upstream
2000-2002 Chevrolet Tahoe V8 4.8L Upstream
2000-2002 Chevrolet Tahoe V8 5.3L Upstream
1996-2000 GMC Yukon V8 5.7L Upstream
2000-2002 GMC Yukon V8 4.8L Upstream
2000-2002 GMC Yukon V8 5.3L Upstream
1994-1996 Pontiac Grand Am V6 3.1L
1994-1996 Pontiac Grand Prix V6 3.1L Upstream
1994-1996 Pontiac Grand Prix V6 3.4L Upstream
Package Includes:1 x Oxygen Sensor
Must Know Before Buying:
- The following information is for instructional and guidance reference only. We try and make them as accurate as we can.
- If Check Engine Light is on or an OBDII Trouble/Fault code occurs after installation, check the sensor with a voltmeter as below. If the sensor is good, further diagnosis is required. There're many different codes for specific functional failures, which are NOT necessarily relevant to the sensor. Find out what the Code means before leaving any feedbacks.
- Items that have been installed, altered or contaminated are non-returnable. ONLY a defective sensor after tested by a voltmeter is applied to manufacturer warranty.
- 20% restocking fee is required if buyer bought wrong items due to not paying attention to fitment information and ask for return.
- The Price, Quality & Funcitonality of the O2 Sensor is fully covered under our warranty & return policy. However, refund for any labor cost, expense in a dealer shop or damage due to wrong installation is NOT covered.
Q: How do I know the O2 sensor is good or not? (Online Video)
A: The only way to know if the O2 sensor is functioning normally is to check its responsiveness to changes in the air/fuel mixture, by Voltage Measurement or Waveform Simulation.
Use a 10-megaohm digital voltmeter. Hook up the voltmeter's red probe to the sensor's signal wire and the black probe to engine ground. (Use back probe method, DO NOT pierce the wire.) For a good sensor, voltage should fluctuate constantly between 0.1 and 0.9 volts after starting the engine for 2 or 3 minutes.
Please take a video clip of the voltmeter and contact us if our sensor:
- Goes above range between 0.1 and 0.9 volt
- Remains below 0.5 volts
- Stays fixed at a particular voltage
You're free to choose replacement or refund if our sensor fails to work, in this case.

| Item Specifics | |
|---|---|
| Brand : | app-autoparts |
| Manufacturer Part Number : | A050058AP01S |
| Type : | Oxygen Sensor |
| Number of Pieces : | 1 |
| Manufacturer Warranty : | 1 Year |
| Custom Bundle : | No |
| Fitment Type : | Direct Replacement |
| Modified Item : | No |
| Interchange Part Number : | 9617178, 234-4012, SG454, SG236 |
| Other Part Number : | 9617178, 234-4012, SG454, SG236 |
| Fits Vehicle : | 1999-2002 Chevrolet Silverado 1500 V6 4.3L |
| Universal Or Specific Fit : | Specific |
| Terminal Type : | Blade |
| Attachment Method : | Screw-On |
| Thread Size : | M18 |
| Hex size : | 7/8 in |
| Housing Material : | Metal |
| Terminal Gender : | Male |
| Number of Wires : | 4 |
| Number of Pins : | 4 |
| Length (Sealing Surface To End Of Connector) : | 17.72 in |
| Oxygen Sensor Type : | Narrow-band Heated |
| Heated : | Yes |
| Placement on Vehicle : | Front, Rear |
| Location : | Before or After Catalytic Converter |
| Position : | Upstream, Downstream |
| Position : | Upstream, Downstream |
| Type : | Sensor |
| Features : | Direct Fit |

2.Please do not use the PayPal note field to indicate us to ship to other address. The note there will NOT be read. If you want to change the shipping address, please contact us by eBay messages.
3.(if you want cancel orders or change address pls contact us within 6 hours after payment,or we are not responsible for shipping a replacement.)
4.Payment must be received within 10 days as auction ended or order might be delayed.1.We only accept PayPal.
2.Please do not use the PayPal note field to indicate us to ship to other address. The note there will NOT be read. If you want to change the shipping address, please contact us by eBay messages.
3.(if you want cancel orders or change address pls contact us within 6 hours after payment,or we are not responsible for shipping a replacement.)
4.Payment must be received within 10 days as auction ended or order might be delayed.1.We only accept PayPal.
1. Orders processed within 24 hours of payment verification.
2. We accept all ebay payment
3. The images shown are not the actual item and are for your reference only.
4. If you have not received your shipment within 15 days from payment , please contact us. We will track the shipment and get back to you as soon as possible with a reply. Our goal is customer satisfaction!
1.We stand behind every product we sell.
2.All of our brand new items come with a 30-Days money-back guarantee.
We maintain high standards of excellence (five stars review)and strive for 100% customer satisfaction! FEEDBACK IS VERY IMPORTANT TO US. We request that you contact us immediately BEFORE you give us neutral or negative feedback, so that we can satisfactorily address your concerns.
Upstream/Upper o2 O2 Oxygen Sensor For 1996-2001ChevroletExpress 2500 4.3L V6
Please check fitment notes & description for accurate information. Specification: *Brand New Fit Vehicles: Package Includes:1 x Oxygen Sensor
Must Know Before Buying:
Q: How do I know the O2 sensor is good or not? (Online Video) A: The only way to know if the O2 sensor is functioning normally is to check its responsiveness to changes in the air/fuel mixture, by Voltage Measurement or Waveform Simulation. Use a 10-megaohm digital voltmeter. Hook up the voltmeter's red probe to the sensor's signal wire and the black probe to engine ground. (Use back probe method, DO NOT pierce the wire.) For a good sensor, voltage should fluctuate constantly between 0.1 and 0.9 volts after starting the engine for 2 or 3 minutes. Please take a video clip of the voltmeter and contact us if our sensor:
You're free to choose replacement or refund if our sensor fails to work, in this case.
![]() 1.We accept multiple payment methods.
2.Please do not use the PayPal note field to indicate us to ship to other address. The note there will NOT be read. If you want to change the shipping address, please contact us by eBay messages.
3.(if you want cancel orders or change address pls contact us within 6 hours after payment,or we are not responsible for shipping a replacement.)
4.Payment must be received within 10 days as auction ended or order might be delayed.1.We only accept PayPal.
2.Please do not use the PayPal note field to indicate us to ship to other address. The note there will NOT be read. If you want to change the shipping address, please contact us by eBay messages. 3.(if you want cancel orders or change address pls contact us within 6 hours after payment,or we are not responsible for shipping a replacement.) 4.Payment must be received within 10 days as auction ended or order might be delayed.1.We only accept PayPal. 2.Please do not use the PayPal note field to indicate us to ship to other address. The note there will NOT be read. If you want to change the shipping address, please contact us by eBay messages. 3.(if you want cancel orders or change address pls contact us within 6 hours after payment,or we are not responsible for shipping a replacement.) 4.Payment must be received within 10 days as auction ended or order might be delayed.1.We only accept PayPal. 2.Please do not use the PayPal note field to indicate us to ship to other address. The note there will NOT be read. If you want to change the shipping address, please contact us by eBay messages.
3.(if you want cancel orders or change address pls contact us within 6 hours after payment,or we are not responsible for shipping a replacement.)
4.Payment must be received within 10 days as auction ended or order might be delayed.
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