Buick Oxygen Sensor




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Tested to ensure highest level of quality and reliability; Helps reduce harmful emissions and extends catalyst lifeNotes: May not be compatible with flanges. May require minor modifications.
  • Replacement
  • Universal Product, 3-wire, 6.69 In. Long, Butt Type Connector
  • Sold Individually
Price: $36.43


All Engines All Submodels
OE-Equivalent. ; Walker Oxygen SensorWalker Product's Oxygen Sensors are precision made for outstanding performance and manufactured to meet and exceed all original equipment specifications and test requirements. .
  • Walker Products
  • Rear
  • Sold Individually
Price: $70.95


6 Cyl 4.2L CXL
ALUMINUM-OXIDE TRAP LAYER — Keeps silicone and lead outside the ceramic element through DENSO’s exclusive design, preventing damage to the platinum electrode. ; Denso Oxygen SensorDenso First Time Fit® oxygen sensors are constructed of the highest quality materials available. High-quality stainless steel, porous polytetrafluoroethylene (PTFE), fluorine rubber, aluminum oxide, high-grade platinum and ceramics are used in each DENSO sensor. FEATURES: .
  • Denso
  • Rear
  • Sold Individually
Price: $54.95


8 Cyl 4.6L Super
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Rigorously tested for perfect performance while saving money in fuel costsDirect plug-in, no cutting or splicing required; 4-wire.
  • Bosch
  • Before Catalytic Converter
  • Sold Individually
Price: $57.35


6 Cyl 3.9L CX, CXL
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AC DELCO OXYGEN SENSOR ASSEMBLY4-wire, heated, position 1; A high quality, OE replacement oxygen sensor assembly.
  • AC Delco
  • Sold Individually
Price: $61.87


All Engines CX, CXL
Are you experiencing surging and or hesitation while driving, or how about an unexplainable decline in fuel economy, unacceptable exhaust emissions, and premature failure of the catalytic converter? If you answered yes to any of it then you are most likely to have a malfunctioning oxygen sensor. All modern automobiles including most of the 1980s cars are equipped with an oxygen sensor. This oxygen sensor is one of the components belonging to the emissions control system. It works by feeding data to the engine management computer, and designed to facilitate and ensure that the engine will run as efficiently as possible, thereby limiting the emissions to a certain degree.

An oxygen sensor like the Buick oxygen sensor is an electronic device that measures the proportion of oxygen in the gas or of the liquid being analyzed. A gasoline engine cannot burn gasoline without oxygen, and a certain ratio of air and gasoline should be maintained. If the air is less than the perfect ratio which 14.7 of air is to 1 gasoline, then there would be a fuel left over after combustion resulting to pollution, and this is called a rich mixture. A lean mixture on the other hand, happens when there is an oxygen excess resulting to additional production of nitrogen-oxide pollutants and might lead to poor performance and even engine damage.

Moreover, oxygen sensors are usually located in the exhaust manifold or exhaust pipe to strategically detect the richness or leanness of the air and gasoline mixture going into the engine. Upon knowing the score, the information is then sent to the electronic control unit computer for make the proper adjustments of the mixture thus giving the engine the best possible fuel economy and lowest possible exhaust emissions. It is highly advised that you constantly keep on eye on your oxygen sensor to prevent damage of your car's catalytic converter and other expensive repairs.

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