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Mercedes S420 Oxygen Sensor Reviews
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Shop Mercedes S420 Replacement Oxygen Sensor

Mercedes is an often-copied producer that is recognized for engineering cars that offer unusual detailing and superior reliability. Support your vehicle's critical components by buying the finest in quality parts and accessories. You picked that high-performance vehicle for its excellent engine power and performance, back up your investment by buying the best new parts. A Mercedes S420 Oxygen Sensor is the part used to check the level of O2 in the car or truck's emissions. Generally installed next to the exhaust manifold, your car's Oxygen Sensor forwards oxygen levels present in the engine's exhaust system to the engine computer. A vehicle's Oxygen Sensor is part of the emissions system and aids in modifications to the air to fuel ratio, eliminating the necessity for manual altitude adjustments. The Oxygen Sensor works in partnership with your car or truck's data processor to determine whether or not the fuel vapor fed to the engine needs to be altered. A properly installed Oxygen Sensor measures the amount of oxygen which is funneled your vehicle's cylinders. No matter the part, servicing your beloved car or truck with top quality parts should pay off, time after time.

We stock these Oxygen Sensor brands for the Mercedes S420: BoschWalker ProductsNGKDIY SolutionsStandard Motor Products

Select your S420 year

Review Fitment Notes
Showing 20 of 209 Results
Upstream Bosch Oxygen Sensor - for 1995 Mercedes S420 4.2L V8 - 13326 Click to Enlarge
4.5 Stars
Bosch 13326
Oxygen Sensor
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Part Number: 13326
Brand: Bosch
Notes: Actual OE Oxygen Sensor
  • Premium Bosch oxygen sensors are designed to improve fuel economy while reducing harmful emissions
  • Direct Fit includes OE Connector for easy installation
  • Performance meets or exceeds OE specifications
  • True Direct-fit OE connectors and harness
Position: Upstream
Condition: New
Shipping Options: Ground
$90.43
(24) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
1995 Mercedes S420 4.2L V8
Upstream Left Bosch Oxygen Sensor - for 1998 Mercedes S420 - W0133-1608938 Click to Enlarge
Website Reviews
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Part Number: W0133-1608938
Brand: Bosch
Notes: OE Connector
Position: Upstream Left
Condition: New
Shipping Options: Ground, Overnight, 2 Day
List Price:
$368.00
Our Price: $61.58
(17) In Stock
This Part Fits:
Catalog: A
Vehicle
1998 Mercedes S420
Downstream Right Bosch Oxygen Sensor - for 1997 Mercedes S420 4.2L V8 - 13782 Click to Enlarge
5 Stars
Bosch 13782
Oxygen Sensor
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Part Number: 13782
Brand: Bosch
Notes: Actual OE Oxygen Sensor
  • Premium Bosch oxygen sensors are designed to improve fuel economy while reducing harmful emissions
  • Direct Fit includes OE Connector for easy installation
  • Performance meets or exceeds OE specifications
  • True Direct-fit OE connectors and harness
Position: Downstream Right
Condition: New
Shipping Options: Ground
$61.43
(99) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
1997 Mercedes S420 4.2L V8
Downstream Left Bosch Oxygen Sensor - for 1998 Mercedes S420 4.2L V8 - 13798 Click to Enlarge
5 Stars
Bosch 13798
Oxygen Sensor
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Part Number: 13798
Brand: Bosch
Notes: Actual OE Oxygen Sensor
  • Premium Bosch oxygen sensors are designed to improve fuel economy while reducing harmful emissions
  • Direct Fit includes OE Connector for easy installation
  • Performance meets or exceeds OE specifications
  • True Direct-fit OE connectors and harness
Position: Downstream Left
Condition: New
Shipping Options: Ground
$67.43
(44) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
1998 Mercedes S420 4.2L V8
Downstream Left Bosch Oxygen Sensor - for 1996 Mercedes S420 4.2L V8 - 13798 Click to Enlarge
5 Stars
Bosch 13798
Oxygen Sensor
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Part Number: 13798
Brand: Bosch
Notes: Actual OE Oxygen Sensor
  • Premium Bosch oxygen sensors are designed to improve fuel economy while reducing harmful emissions
  • Direct Fit includes OE Connector for easy installation
  • Performance meets or exceeds OE specifications
  • True Direct-fit OE connectors and harness
Position: Downstream Left
Condition: New
Shipping Options: Ground
$67.43
(44) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
1996 Mercedes S420 4.2L V8
Upstream Left Bosch Oxygen Sensor - for 1999 Mercedes S420 - W0133-1608938 Click to Enlarge
Website Reviews
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Part Number: W0133-1608938
Brand: Bosch
Notes: OE Connector
Position: Upstream Left
Condition: New
Shipping Options: Ground, Overnight, 2 Day
List Price:
$368.00
Our Price: $61.58
(17) In Stock
This Part Fits:
Catalog: A
Vehicle
1999 Mercedes S420
Upstream Bosch Oxygen Sensor - for 1994 Mercedes S420 4.2L V8 - 13429 Click to Enlarge
5 Stars
Bosch 13429
Oxygen Sensor
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Part Number: 13429
Brand: Bosch
Notes: Actual OE Oxygen Sensor -- Standard
  • Premium Bosch oxygen sensors are designed to improve fuel economy while reducing harmful emissions
  • Direct Fit includes OE Connector for easy installation
  • Performance meets or exceeds OE specifications
  • True Direct-fit OE connectors and harness
Position: Upstream
Condition: New
Shipping Options: Ground
$85.43
(24) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
1994 Mercedes S420 4.2L V8
Downstream Right Bosch Oxygen Sensor - for 1996 Mercedes S420 4.2L V8 - 13782 Click to Enlarge
5 Stars
Bosch 13782
Oxygen Sensor
Loading Reviews...
Part Number: 13782
Brand: Bosch
Notes: Actual OE Oxygen Sensor
  • Premium Bosch oxygen sensors are designed to improve fuel economy while reducing harmful emissions
  • Direct Fit includes OE Connector for easy installation
  • Performance meets or exceeds OE specifications
  • True Direct-fit OE connectors and harness
Position: Downstream Right
Condition: New
Shipping Options: Ground
$61.43
(99) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
1996 Mercedes S420 4.2L V8
Downstream Right Bosch Oxygen Sensor - for 1998 Mercedes S420 4.2L V8 - 13782 Click to Enlarge
5 Stars
Bosch 13782
Oxygen Sensor
Loading Reviews...
Part Number: 13782
Brand: Bosch
Notes: Actual OE Oxygen Sensor
  • Premium Bosch oxygen sensors are designed to improve fuel economy while reducing harmful emissions
  • Direct Fit includes OE Connector for easy installation
  • Performance meets or exceeds OE specifications
  • True Direct-fit OE connectors and harness
Position: Downstream Right
Condition: New
Shipping Options: Ground
$61.43
(99) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
1998 Mercedes S420 4.2L V8
Upstream Left Walker Products Oxygen Sensor - for 1997 Mercedes S420 - W0133-1916922 Click to Enlarge
Website Reviews
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Part Number: W0133-1916922
Brand: Walker Products
Notes: OE Connector
Position: Upstream Left
Condition: New
Shipping Options: Ground, Overnight, 2 Day
List Price:
$368.00
Our Price: $92.58
View Details
This Part Fits:
Catalog: A
Vehicle
1997 Mercedes S420
Downstream Right Bosch Oxygen Sensor - for 1999 Mercedes S420 - W0133-1610101 Click to Enlarge
5 Stars
Bosch W0133-1610101
Oxygen Sensor
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Part Number: W0133-1610101
Brand: Bosch
Notes: OE Connector
Position: Downstream Right
Condition: New
Shipping Options: Ground, Overnight, 2 Day
List Price:
$300.00
Our Price: $73.58
(55) In Stock
This Part Fits:
Catalog: A
Vehicle
1999 Mercedes S420
Upstream Bosch Oxygen Sensor - for 1997 Mercedes S420 4.2L V8 - 15738 Click to Enlarge
4.6 Stars
Bosch 15738
Oxygen Sensor
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Part Number: 15738
Brand: Bosch
Notes: Universal Oxygen Sensor
  • Premium Bosch oxygen sensors are designed to improve fuel economy while reducing harmful emissions
  • Includes Smart Link Connector, no soldering required
  • No special tools required for installation
  • Seared protection tube due to 100% functional quality test
  • Performance meets or exceeds OE specifications
Position: Upstream
Condition: New
Shipping Options: Ground
$55.43
(41) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
1997 Mercedes S420 4.2L V8
Downstream Left Walker Products Oxygen Sensor - for 1997 Mercedes S420 - W0133-1916885 Click to Enlarge
Website Reviews
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Part Number: W0133-1916885
Brand: Walker Products
Notes: OE Connector
Position: Downstream Left
Condition: New
Shipping Options: Ground, Overnight, 2 Day
List Price:
$195.00
Our Price: $92.58
(1) In Stock
This Part Fits:
Catalog: A
Vehicle
1997 Mercedes S420
Downstream Left Bosch Oxygen Sensor - for 1997 Mercedes S420 4.2L V8 - 13798 Click to Enlarge
5 Stars
Bosch 13798
Oxygen Sensor
Loading Reviews...
Part Number: 13798
Brand: Bosch
Notes: Actual OE Oxygen Sensor
  • Premium Bosch oxygen sensors are designed to improve fuel economy while reducing harmful emissions
  • Direct Fit includes OE Connector for easy installation
  • Performance meets or exceeds OE specifications
  • True Direct-fit OE connectors and harness
Position: Downstream Left
Condition: New
Shipping Options: Ground
$67.43
(44) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
1997 Mercedes S420 4.2L V8
Downstream Left Bosch Oxygen Sensor - for 1999 Mercedes S420 4.2L V8 - 13798 Click to Enlarge
5 Stars
Bosch 13798
Oxygen Sensor
Loading Reviews...
Part Number: 13798
Brand: Bosch
Notes: Actual OE Oxygen Sensor
  • Premium Bosch oxygen sensors are designed to improve fuel economy while reducing harmful emissions
  • Direct Fit includes OE Connector for easy installation
  • Performance meets or exceeds OE specifications
  • True Direct-fit OE connectors and harness
Position: Downstream Left
Condition: New
Shipping Options: Ground
$67.43
(44) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
1999 Mercedes S420 4.2L V8
Front Right Bosch Oxygen Sensor - for 1999 Mercedes S420 - 000 540 76 17 Click to Enlarge
Website Reviews
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Part Number: 000 540 76 17
Brand: Bosch
Notes: Oxygen Sensor
Position: Front Right
Condition: New
Shipping Options: Ground
$69.73
(23) In Stock
This Part Fits:
Catalog: G
Vehicle
1999 Mercedes S420
Downstream Right NGK Oxygen Sensor - for 1999 Mercedes S420 4.2L V8 - 25567 Click to Enlarge
Website Reviews
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Part Number: 25567
Brand: NGK
Notes: Direct Fit Oxygen Sensor -- B1S2; OE Equivalent Design
  • NTK oxygen sensors are equipped with OEM specified connectors and attaching hardware for easy installation. Dual-coated platinum element to increase longevity and ensure the quickest response time.
  • NTK is constantly improving sensor designs to provide excellent performance and improve resistance to failure. NTK works with their OEM manufacturers through each phase of development from concept to production.
  • NTK oxygen sensors heat up rapidly to meet requirements of the vehicle to improve fuel economy and reduce emissions. NTK's proprietary ceramic element overcoat protects against sensor failure.
Position: Downstream Right
Condition: New
Shipping Options: Ground
$60.08
(4) In Stock
This Part Fits:
Catalog: H
Vehicle Engine
1999 Mercedes S420 4.2L V8
Downstream Left NGK Oxygen Sensor - for 1999 Mercedes S420 4.2L V8 - 25564 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: 25564
Brand: NGK
Notes: Direct Fit Oxygen Sensor -- B2S2; OE Equivalent Design
  • NTK is constantly improving sensor designs to provide excellent performance and improve resistance to failure. NTK works with their OEM manufacturers through each phase of development from concept to production.
  • NTK oxygen sensors are equipped with OEM specified connectors and attaching hardware for easy installation. Dual-coated platinum element to increase longevity and ensure the quickest response time.
  • NTK oxygen sensors heat up rapidly to meet requirements of the vehicle to improve fuel economy and reduce emissions. NTK's proprietary ceramic element overcoat protects against sensor failure.
Position: Downstream Left
Condition: New
Shipping Options: Ground
$67.98
View Details
This Part Fits:
Catalog: C
Vehicle Engine
1999 Mercedes S420 4.2L V8
Downstream Right DIY Solutions Oxygen Sensor with Socket Kit - for 1999 Mercedes S420 - EMS00158 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: EMS00158
Brand: DIY Solutions
Notes: Passenger Side; Downstream
  • Quality Tested - built to a strict level of product standards.
  • Direct Fit Replacement
Position: Downstream Right
Condition: New
Shipping Options: Free Ground Shipping
$47.95
with FREE Shipping
(20) In Stock
This Part Fits:
Catalog: Q
Vehicle
1999 Mercedes S420
Standard Motor Products Oxygen Sensor - for 1999 Mercedes S420 4.2L V8 - SG300 Click to Enlarge
4.8 Stars
Standard Motor Products SG300
Oxygen Sensor
Loading Reviews...
Part Number: SG300
Brand: Standard Motor Products
Notes: Oxygen Sensor -- Left; Universal Downstream
Condition: New
Shipping Options: Ground
$53.98
(1) In Stock
This Part Fits:
Catalog: N
Vehicle Engine
1999 Mercedes S420 4.2L V8

Related Fuel Injection Parts

Oxygen Sensors available for the following Mercedes S420 years: 1999, 1998, 1997, 1996, 1995, 1994, 99, 98, 97, 96, 95, 94. This part is also sometimes called Mercedes S420 O2 Sensor. We stock oxygen sensor parts for most Mercedes models including E320, C230, ML320, C280, E350, S500, CLK320, ML350, 300E, S430, C240, ML430, SL500, CLK430, C300, SLK230, GL450, S550, E430, C320, S320, 190E, E420, SLK320, E55 AMG, C220, E500, S600, ML500, R350, 420SEL, C63 AMG, Sprinter 2500, SL320, 300SE, 500SL, GLK350, 560SEL, CLS550 and CLK350.

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