1979 Cadillac Eldorado Oxygen Sensors

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Keep Your 1979 Cadillac Eldorado in Top Shape with a Quality Oxygen Sensor

When it comes to maintaining or upgrading your 1979 Cadillac Eldorado, choosing high-quality parts is crucial for ensuring your vehicle stays in top shape, whether you’re tackling a repair or enhancing performance. At Advance Auto Parts, we know how important it is to find the right Oxygen Sensor for your Eldorado. We currently carry a top Oxygen Sensor in stock that is built to last. Whether you’re replacing a damaged Oxygen Sensor or looking to upgrade, our selection for the 1979 Cadillac Eldorado ensures you’ll find exactly what you need to keep your vehicle looking and performing its best.

Explore Related Parts

And while you’re here, don’t forget to check out related part categories like Fuel Pumps and Gas Caps to complete your upgrade or repair project. At Advance Auto Parts, we’re proud to offer the parts and expertise to keep your 1979 Cadillac Eldorado running smoothly and looking great.

Essential 1979 Cadillac Eldorado Oxygen Sensors

Bosch – "Bosch Oxygen Sensor: 4 Wire, 21.65"" Long, Heated, Exact Fit, 13029" (Part No.13029)

"Bosch Oxygen Sensor: 4 Wire, 21.65"" Long, Heated, Exact Fit, 13029"

from

$49.99
Bosch is the world’s leading supplier and original equipment manufacturer of Oxygen Sensors. Bosch invented the automotive oxygen sensor and leads the way in sensor technology and innovation. From overall sensor design to the critical ceramic element, Bosch is known worldwide for quality and performance.
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NTK – "NTK Switching Oxygen Sensor: 2 Wire, 13.75"" Long, Non-Heated, Direct Fit, 21553" (Part No.21553)

"NTK Switching Oxygen Sensor: 2 Wire, 13.75"" Long, Non-Heated, Direct Fit, 21553"

from

$59.99
NGK is the sensor specialist for import and domestic applications. Established under the NGK product family, oxygen sensors are part of our ongoing commitment to streamlining product types and increasing coverage. A ceramic company at our core, uses cutting-edge technology to control the ceramic used in our oxygen sensors from raw material to finished product. NTK is the world’s largest supplier and manufacturer of OE oxygen sensors. Combining expertise and innovation, oxygen sensors deliver superior fit, form, and function. oxygen sensors undergo extensive testing during manufacturing to ensure quality and reliability that meets or exceeds OE specifications. As new vehicles incorporate connected and automated technologies, trust The Sensor Specialist for comprehensive market support and OE application technology.
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GM Genuine Parts – GM Genuine Parts Oxygen Sensor: 4 Wires, 254.4 mm Long, Heated, Exact Fit, AFS73 (Part No.AFS73)

GM Genuine Parts Oxygen Sensor: 4 Wires, 254.4 mm Long, Heated, Exact Fit, AFS73

from

$97.99
GM Genuine Parts Oxygen (O2) Sensors are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These sensors are special feedback sensors on your vehicle’s exhaust system and measure the proportion of oxygen in exhaust gases. Using this measurement, the engine control module (ECM) can adjust the air/fuel ratio to near the optimal value of 14.7:1. At this ratio, engine performance, emissions, and fuel economy are all optimized. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).
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DENSO – "DENSO Oxygen Sensor: 4 Wire, 15.35"" Long, Heated, Exact Fit, 234-4018" (Part No.234-4018)

"DENSO Oxygen Sensor: 4 Wire, 15.35"" Long, Heated, Exact Fit, 234-4018"

from

$71.99
DENSO Oxygen Sensors are manufactured and tested to the strictest OE standards for unparalleled performance. Each component is precision built for exact replacement, and a first time fit. This innovative line features DENSO’s exclusive aluminum oxide trap layer, designed to protect the ceramic element from silicone and lead poisoning for improved engine performance, greater fuel efficiency, and unparalleled longevity. DENSO gives you the right part and the right fit.
See More

Bosch – "Bosch Oxygen Sensor: 4 Wire, 16.93"" Long, Heated, Exact Fit, 15895" (Part No.15895)

"Bosch Oxygen Sensor: 4 Wire, 16.93"" Long, Heated, Exact Fit, 15895"

from

$84.99
Bosch is the world’s leading supplier and original equipment manufacturer of Oxygen Sensors. Bosch invented the automotive oxygen sensor and leads the way in sensor technology and innovation. From overall sensor design to the critical ceramic element, Bosch is known worldwide for quality and performance.
See More

NTK – NTK Oxygen Sensor, 21002 (Part No.21002)

NTK Oxygen Sensor, 21002

from

$39.99
NGK is the world’s largest supplier and manufacturer of OEM oxygen sensors. Oxygen sensors play a critical role as part of the vehicle’s on-board diagnostic system in maintaining optimal engine performance, maximizing fuel efficiency and reducing harmful emissions. Providing constant closed loop feedback to the ECU, oxygen sensors help to control the air-fuel ratio while alerting OBDII systems of possible problems with fuel delivery or catalytic converter efficiency. A ceramics company at our core, uses state-of-the art technology enabling control of the ceramic element used in our oxygen sensors from raw material to finished product. Trust The Sensor Specialist for full-line market support and OE application technology.
See More

DENSO – "DENSO Oxygen Sensor: 4 Wire, 16.54"" Long, Heated, Exact Fit, 234-4025" (Part No.234-4025)

"DENSO Oxygen Sensor: 4 Wire, 16.54"" Long, Heated, Exact Fit, 234-4025"

from

$68.99
DENSO Oxygen Sensors are manufactured and tested to the strictest OE standards for unparalleled peformance; Each component is precision built for exact replacement, and a first time fit; This innovative line features DENSO’s exclusive aluminum oxide trap layer, designed to protect the ceramic element from silicone and lead posining for improved engine performance, greater fuel efficiency, and unparalleled longevity; DENSO gives you the right part and the right fit, the first time.
See More

DENSO – "DENSO Oxygen Sensor: 4 Wire, 15.55"" Long, Heated, Exact Fit, 234-4650" (Part No.234-4650)

"DENSO Oxygen Sensor: 4 Wire, 15.55"" Long, Heated, Exact Fit, 234-4650"

from

$79.99
DENSO Oxygen Sensors are manufactured and tested to the strictest OE standards for unparalleled peformance; Each component is precision built for exact replacement, and a first time fit; This innovative line features DENSO’s exclusive aluminum oxide trap layer, designed to protect the ceramic element from silicone and lead posining for improved engine performance, greater fuel efficiency, and unparalleled longevity; DENSO gives you the right part and the right fit, the first time.
See More

Bosch – "Bosch Oxygen Sensor: 4 Wire, 24.02"" Long, Heated, 15740" (Part No.15740)

"Bosch Oxygen Sensor: 4 Wire, 24.02"" Long, Heated, 15740"

from

$69.99
Bosch is the world€™s leading supplier and original equipment manufacturer of Oxygen Sensors. Bosch invented the automotive oxygen sensor and leads the way in sensor technology and innovation. From overall sensor design to the critical ceramic element, Bosch is known worldwide for quality and performance.
See More

NTK – "NTK Switching Oxygen Sensor: 4 Wire, 10"" Long, Heated, Direct Fit, 21506" (Part No.21506)

"NTK Switching Oxygen Sensor: 4 Wire, 10"" Long, Heated, Direct Fit, 21506"

from

$82.99
NGK is the world’s largest supplier and manufacturer of OEM oxygen sensors. Oxygen sensors play a critical role as part of the vehicle’s on-board diagnostic system in maintaining optimal engine performance, maximizing fuel efficiency and reducing harmful emissions. Providing constant closed loop feedback to the ECU, oxygen sensors help to control the air-fuel ratio while alerting OBDII systems of possible problems with fuel delivery or catalytic converter efficiency. A ceramics company at our core, uses state-of-the art technology enabling control of the ceramic element used in our oxygen sensors from raw material to finished product. Trust The Sensor Specialist for full-line market support and OE application technology.
See More

GM Genuine Parts – GM Genuine Parts Heated Oxygen Sensor, AFS109 (Part No.AFS109)

GM Genuine Parts Heated Oxygen Sensor, AFS109

from

$119.99
GM Genuine Parts Oxygen (O2) Sensors are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These sensors are special feedback sensors on your vehicle’s exhaust system and measure the proportion of oxygen in exhaust gases. Using this measurement, the engine control module (ECM) can adjust the airfuel ratio to near the optimal value of 14.7:1. At this ratio, engine performance, emissions, and fuel economy are all optimized. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).
See More

NTK – "NTK Switching Oxygen Sensor: 1 Wire, 7"" Long, Non-Heated, Direct Fit, 21500" (Part No.21500)

"NTK Switching Oxygen Sensor: 1 Wire, 7"" Long, Non-Heated, Direct Fit, 21500"

from

$57.99
NGK is the world’s largest supplier and manufacturer of OEM oxygen sensors. Oxygen sensors play a critical role as part of the vehicle’s on-board diagnostic system in maintaining optimal engine performance, maximizing fuel efficiency and reducing harmful emissions. Providing constant closed loop feedback to the ECU, oxygen sensors help to control the air-fuel ratio while alerting OBDII systems of possible problems with fuel delivery or catalytic converter efficiency. A ceramics company at our core, uses state-of-the art technology enabling control of the ceramic element used in our oxygen sensors from raw material to finished product. Trust The Sensor Specialist for full-line market support and OE application technology.
See More

PowerStop – PowerStop Z16 Low-Dust Ceramic Brake Pads, 16-623 (Part No.16-623)

PowerStop Z16 Low-Dust Ceramic Brake Pads, 16-623

from

$67.99
The Power Stop Z16 Evolution ceramic brake pads feature a ceramic formula designed to maximize stopping power while reducing brake dust & eliminating noise. Using OE positive mold technology along with a thermal scorched pad surface, Z16 pads maintain consistent wear and performance while ensuring a fast break-in. The Z16 Evolution ceramic brake pads are an affordable stock replacement for all vehicles.
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Bosch – "Bosch Oxygen Sensor: 1 Wire, 5.31"" Long, Non-heated, Universal Fit, 11027" (Part No.11027)

"Bosch Oxygen Sensor: 1 Wire, 5.31"" Long, Non-heated, Universal Fit, 11027"

from

$39.99
Bosch is the world’s leading supplier and original equipment manufacturer of Oxygen Sensors. Bosch invented the automotive oxygen sensor and leads the way in sensor technology and innovation. From overall sensor design to the critical ceramic element, Bosch is known worldwide for quality and performance.
See More

DENSO – "DENSO Oxygen Sensor: Upstream, 4 Wire, 12.80"" Long, Heated, Exact Fit, 234-4006" (Part No.234-4006)

"DENSO Oxygen Sensor: Upstream, 4 Wire, 12.80"" Long, Heated, Exact Fit, 234-4006"

from

$61.99
DENSO Oxygen Sensors are manufactured and tested to the strictest OE standards for unparalleled peformance; Each component is precision built for exact replacement, and a first time fit; This innovative line features DENSO’s exclusive aluminum oxide trap layer, designed to protect the ceramic element from silicone and lead posining for improved engine performance, greater fuel efficiency, and unparalleled longevity; DENSO gives you the right part and the right fit, the first time.
See More

Bosch – "Bosch Oxygen Sensor: 4 Wire, 16.54"" Long, Heated, Exact Fit, 13444" (Part No.13444)

"Bosch Oxygen Sensor: 4 Wire, 16.54"" Long, Heated, Exact Fit, 13444"

from

$45.99
Bosch is the world’s leading supplier and original equipment manufacturer of Oxygen Sensors. Bosch invented the automotive oxygen sensor and leads the way in sensor technology and innovation. From overall sensor design to the critical ceramic element, Bosch is known worldwide for quality and performance.
See More

PowerStop – PowerStop Z16 Low-Dust Ceramic Brake Pads, 16-508 (Part No.16-508)

PowerStop Z16 Low-Dust Ceramic Brake Pads, 16-508

from

$63.99
The Power Stop Z16 Evolution ceramic brake pads feature a ceramic formula designed to maximize stopping power while reducing brake dust & eliminating noise. Using OE positive mold technology along with a thermal scorched pad surface, Z16 pads maintain consistent wear and performance while ensuring a fast break-in. The Z16 Evolution ceramic brake pads are an affordable stock replacement for all vehicles.
See More

NTK – "NTK Switching Oxygen Sensor: 4 Wire, 16.75"" Long, Heated, Direct Fit, 21544" (Part No.21544)

"NTK Switching Oxygen Sensor: 4 Wire, 16.75"" Long, Heated, Direct Fit, 21544"

from

$77.99
NGK is the world’s largest supplier and manufacturer of OEM oxygen sensors. Oxygen sensors play a critical role as part of the vehicle’s on-board diagnostic system in maintaining optimal engine performance, maximizing fuel efficiency and reducing harmful emissions. Providing constant closed loop feedback to the ECU, oxygen sensors help to control the air-fuel ratio while alerting OBDII systems of possible problems with fuel delivery or catalytic converter efficiency. A ceramics company at our core, uses state-of-the art technology enabling control of the ceramic element used in our oxygen sensors from raw material to finished product. Trust The Sensor Specialist for full-line market support and OE application technology.
See More

DENSO – "DENSO Oxygen Sensor: 4 Wire, 11.77"" Long, Heated, Universal Fit, 234-4000" (Part No.234-4000)

"DENSO Oxygen Sensor: 4 Wire, 11.77"" Long, Heated, Universal Fit, 234-4000"

from

$81.99
DENSO Oxygen Sensors are manufactured and tested to the strictest OE standards for unparalleled peformance; Each component is precision built for exact replacement, and a first time fit; This innovative line features DENSO’s exclusive aluminum oxide trap layer, designed to protect the ceramic element from silicone and lead posining for improved engine performance, greater fuel efficiency, and unparalleled longevity; DENSO gives you the right part and the right fit, the first time.
See More

DENSO – "DENSO Oxygen Sensor: 4 Wire, 11.77"" Long, Heated, Universal Fit, 234-4209" (Part No.234-4209)

"DENSO Oxygen Sensor: 4 Wire, 11.77"" Long, Heated, Universal Fit, 234-4209"

from

$83.99
DENSO Oxygen Sensors are manufactured and tested to the strictest OE standards for unparalleled peformance; Each component is precision built for exact replacement, and a first time fit; This innovative line features DENSO’s exclusive aluminum oxide trap layer, designed to protect the ceramic element from silicone and lead posining for improved engine performance, greater fuel efficiency, and unparalleled longevity; DENSO gives you the right part and the right fit, the first time.
See More

Bosch – "Bosch Oxygen Sensor: 4 Wire, 24.02"" Long, Heated, Universal Fit, 15732" (Part No.15732)

"Bosch Oxygen Sensor: 4 Wire, 24.02"" Long, Heated, Universal Fit, 15732"

from

$89.99
Bosch is the world’s leading supplier and original equipment manufacturer of Oxygen Sensors. Bosch invented the automotive oxygen sensor and leads the way in sensor technology and innovation. From overall sensor design to the critical ceramic element, Bosch is known worldwide for quality and performance.
See More

Bosch – "Bosch Oxygen Sensor: 4 Wire, 12.01"" Long, Heated, Exact Fit, 15702" (Part No.15702)

"Bosch Oxygen Sensor: 4 Wire, 12.01"" Long, Heated, Exact Fit, 15702"

from

$61.99
Bosch is the world’s leading supplier and original equipment manufacturer of Oxygen Sensors. Bosch invented the automotive oxygen sensor and leads the way in sensor technology and innovation. From overall sensor design to the critical ceramic element, Bosch is known worldwide for quality and performance.
See More

DENSO – "DENSO Oxygen Sensor: 2 Wire, 11.77"" Long, Not Heated, Universal Fit, 234-2000" (Part No.234-2000)

"DENSO Oxygen Sensor: 2 Wire, 11.77"" Long, Not Heated, Universal Fit, 234-2000"

from

$50.99
DENSO Oxygen Sensors are manufactured and tested to the strictest OE standards for unparalleled peformance; Each component is precision built for exact replacement, and a first time fit; This innovative line features DENSO’s exclusive aluminum oxide trap layer, designed to protect the ceramic element from silicone and lead posining for improved engine performance, greater fuel efficiency, and unparalleled longevity; DENSO gives you the right part and the right fit, the first time.
See More

Bosch – "Bosch Oxygen Sensor: 4 Wire, 15.24"" Long, Heated, Exact Fit, 13474" (Part No.13474)

"Bosch Oxygen Sensor: 4 Wire, 15.24"" Long, Heated, Exact Fit, 13474"

from

$66.99
Bosch is the world’s leading supplier and original equipment manufacturer of Oxygen Sensors. Bosch invented the automotive oxygen sensor and leads the way in sensor technology and innovation. From overall sensor design to the critical ceramic element, Bosch is known worldwide for quality and performance.
See More

NTK – "NTK Switching Oxygen Sensor: 4 Wire, 15.25"" Long, Heated, Direct Fit, 21514" (Part No.21514)

"NTK Switching Oxygen Sensor: 4 Wire, 15.25"" Long, Heated, Direct Fit, 21514"

from

$102.99
NGK is the sensor specialist for import and domestic applications. Established under the NGK product family, oxygen sensors are part of our ongoing commitment to streamlining product types and increasing coverage. A ceramic company at our core, uses cutting-edge technology to control the ceramic used in our oxygen sensors from raw material to finished product. NTK is the world’s largest supplier and manufacturer of OE oxygen sensors. Combining expertise and innovation, oxygen sensors deliver superior fit, form, and function. oxygen sensors undergo extensive testing during manufacturing to ensure quality and reliability that meets or exceeds OE specifications. As new vehicles incorporate connected and automated technologies, trust The Sensor Specialist for comprehensive market support and OE application technology.
See More

NTK – "NTK Switching Oxygen Sensor: 4 Wire, 15.25"" Long, Heated, Direct Fit, 21539" (Part No.21539)

"NTK Switching Oxygen Sensor: 4 Wire, 15.25"" Long, Heated, Direct Fit, 21539"

from

$72.99
NGK is the sensor specialist for import and domestic applications. Established under the NGK product family, oxygen sensors are part of our ongoing commitment to streamlining product types and increasing coverage. A ceramic company at our core, uses cutting-edge technology to control the ceramic used in our oxygen sensors from raw material to finished product. NTK is the world’s largest supplier and manufacturer of OE oxygen sensors. Combining expertise and innovation, oxygen sensors deliver superior fit, form, and function. oxygen sensors undergo extensive testing during manufacturing to ensure quality and reliability that meets or exceeds OE specifications. As new vehicles incorporate connected and automated technologies, trust The Sensor Specialist for comprehensive market support and OE application technology.
See More

DENSO – "DENSO Oxygen Sensor: Upstream, 2 Wire, 14.80"" Long, Not Heated, Exact Fit, 234-2001" (Part No.234-2001)

"DENSO Oxygen Sensor: Upstream, 2 Wire, 14.80"" Long, Not Heated, Exact Fit, 234-2001"

from

$43.99
DENSO Oxygen Sensors are manufactured and tested to the strictest OE standards for unparalleled peformance; Each component is precision built for exact replacement, and a first time fit; This innovative line features DENSO’s exclusive aluminum oxide trap layer, designed to protect the ceramic element from silicone and lead posining for improved engine performance, greater fuel efficiency, and unparalleled longevity; DENSO gives you the right part and the right fit, the first time.
See More

GM Genuine Parts – GM Genuine Parts Oxygen Sensor: 2 Wires, Heated, Exact Fit, AFS98 (Part No.AFS98)

GM Genuine Parts Oxygen Sensor: 2 Wires, Heated, Exact Fit, AFS98

from

$135.99
GM Genuine Parts Oxygen (O2) Sensors are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These sensors are special feedback sensors on your vehicle’s exhaust system and measure the proportion of oxygen in exhaust gases. Using this measurement, the engine control module (ECM) can adjust the air/fuel ratio to near the optimal value of 14.7:1. At this ratio, engine performance, emissions, and fuel economy are all optimized. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).
See More

Most Popular Oxygen Sensor for 1979 Cadillac Eldorados

Enhance your 1979 Cadillac Eldorado with this popular Oxygen Sensor we have in stock, for $57.99.

NTK – "NTK Switching Oxygen Sensor: 1 Wire, 7"" Long, Non-Heated, Direct Fit, 21500" (Part No.21500)

"NTK Switching Oxygen Sensor: 1 Wire, 7"" Long, Non-Heated, Direct Fit, 21500"

from

$57.99
NGK is the world’s largest supplier and manufacturer of OEM oxygen sensors. Oxygen sensors play a critical role as part of the vehicle’s on-board diagnostic system in maintaining optimal engine performance, maximizing fuel efficiency and reducing harmful emissions. Providing constant closed loop feedback to the ECU, oxygen sensors help to control the air-fuel ratio while alerting OBDII systems of possible problems with fuel delivery or catalytic converter efficiency. A ceramics company at our core, uses state-of-the art technology enabling control of the ceramic element used in our oxygen sensors from raw material to finished product. Trust The Sensor Specialist for full-line market support and OE application technology.
See More

FAQs for 1979 Cadillac Eldorado Oxygen Sensors

What’s the price range for 1979 Cadillac Eldorado Oxygen Sensors?

We currently have just one Oxygen Sensors for the 1979 Cadillac Eldorado in stock: "NTK Switching Oxygen Sensor: 1 Wire, 7"" Long, Non-Heated, Direct Fit, 21500" and it costs $57.99.

Does Advance Auto Parts sell Oxygen Sensors for other Cadillac Eldorado model years?

Yes, we carry Oxygen Sensors for 22 model years of Cadillac Eldorados between 1980 and 2002. The following model years are the most popular for Oxygen Sensor purchases: 2002, 2001, 2000, 1999, 1998, 1997, 1996, 1995, and 1994.

What types of Oxygen Sensors do you sell for my 1979 Cadillac Eldorado?

We currently have just 1 Oxygen Sensor in stock for a 1979 Cadillac Eldorado, and as of 8/2/26, it is an Oxygen Sensor.

Can I get help with 1979 Cadillac Eldorado Oxygen Sensor orders?

Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about Cadillac Oxygen Sensors and more.

What is your return policy for Cadillac Eldorado Oxygen Sensors?

Advance Auto Parts keeps returns simple. For new Cadillac Eldorado Oxygen Sensors and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.