2PCS/Set Upstream & Downstream O2 Oxygen Sensor For Chevy 1500 5.3L GMC 234-4668

Description

PHOTOS
DESCRIPTION
Superior Quality Maximizes Engine Performance and Fuel Efficiency:
Light duty oxygen sensor started to appear on vehicles with the development of fuel injection systems. The basic job of the sensor is to monitor the air fuel mixture under idle, moderate acceleration and cruise conditions. Under heavy acceleration the oxygen sensor goes into "open loop," which basically means that the engine management computer system ignores the oxygen sensor. Oxygen sensors have a smaller range of limits in detecting and adjusting the difference from an optimum air/fuel ratio.
Oxygen Sensors:
Oxygen sensors, also known as Lambda sensors or O2 sensors among some vehicle manufacturers, are among the most sensitive and critical components on your car's engine. Earlier fuel injection systems employed one oxygen sensor in the exhaust system to maintain closed-loop air/fuel mixture control. However, today's engines may use as many as four sensors, which monitor not only exhaust gas oxygen content but catalytic converter efficiency as well. In order to perform these functions properly, the sensors must adhere to OE standards within incredibly close tolerances. A malfunctioning or incorrectly calibrated oxygen sensor can hurt driveability and illuminate the malfunction indicator, resulting in costly and time-consuming repairs. These/This oxygen sensors are designed to meet those tolerances and more.
Features:
Corrosion-resistant stainless steel construction.
PTFE filter blocks efficiency-robbing contaminants.
Refined zirconia element improves sensor response.
**IMPORTANT!
Please kindly check your car part Number first and make sure you're purchasing the correct one before placing the order. Very often there is more than one part available per application as auto makers often switch midyear. eBay's compatibility system does not allow sellers to account for any variations by VIN. If you do not have the part number, you can get it from any dealership by providing your VIN or feel free to contact us via eBay's messaging. This way you can avoid unnecessary hassle and return shipping costs. We provide part numbers and high resolution photos, but if you do not check them we cannot guarantee fitment.
Specifications:
Type：Tube Oxygen Sensor
Length (Sensor to Lead)：450mm
Interchange part Number: 234-4668
Color: Black
Package Included:
2pcs Oxygen Sensor
SHIPPING
1.We ship to your eBay or Paypal address. Please make sure your eBay and Paypal address is correct before you pay.
2.Fast shipping by USPS, UPS, DHL or Fedex. It will takes about 5-7 business days for delivery. Items will be shipped within 1-3 business day when we received payment.
3.If your shipment delays, we hope you can be patient, and at the same time contact us, we will try our best to help you.
RETURN
We offer 30 days return.
We are not responsible for any purchase after this 30-day period.
You must contact us as soon as you have decided to cancel. If your order has not been despatched it will be cancelled and you will be issued with a full refund.
However, if your order has been despatched you will be liable for return postage costs.
Please note that we cannot give refunds after the 30 day limit has expired.
A full refund will be issued as soon as the goods are received back.
We do our best to process as quickly as possible.
If you have any questions please contact us through "Contact seller" link.
We will respond within 1 business day or less.
On Jul-15-21 at 02:54:12 PDT, seller added the following information: