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Mercedes E420 Oxygen Sensor Reviews
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Shop Mercedes E420 Replacement Oxygen Sensor

Mercedes-Benz E420 drivers may realize their car has an oxygen sensor installed in the exhaust system as part of emissions control, but how many realize that this particular model vehicle is equipped with four separate O2 sensors? Each of these must be functioning properly in order for your car to realize maximum performance, as the O2 sensor is an essential element in the regulation of the air/fuel mixture being injected into the engine cylinders. Parks Geek stocks a complete line of oxygen sensors for the Mercedes E420, including OEM parts manufactured by Bosch. Buyers need to be certain to obtain the correct sensor, noting if the part is for the left side or right, upstream or down. The E420 was only made for three model years: 1994, 1995 and 1997 (no 1996s were manufactured), and it's also important to get a replacement sensor designed to fit your exact year.

We stock these Oxygen Sensor brands for the Mercedes E420: BoschWalker ProductsDensoWalkerNGKDIY SolutionsStandard Motor Products

Select your E420 year

Review Fitment Notes
Showing 19 of 64 Results
Upstream Right Bosch Oxygen Sensor - for 1997 Mercedes E420 4.2L V8 - 13862 Click to Enlarge
5 Stars
Bosch 13862
Oxygen Sensor
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Part Number: 13862
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 Right
Condition: New
Shipping Options: Ground
$65.43
(35) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
1997 Mercedes E420 4.2L V8
Upstream Left Bosch Oxygen Sensor - for 1997 Mercedes E420 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: Upstream Left
Condition: New
Shipping Options: Ground
$67.43
(42) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
1997 Mercedes E420 4.2L V8
Downstream Bosch Oxygen Sensor - for 1997 Mercedes E420 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
Condition: New
Shipping Options: Ground
$61.43
(99) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
1997 Mercedes E420 4.2L V8
Upstream Bosch Oxygen Sensor - for 1995 Mercedes E420 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
(25) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
1995 Mercedes E420 4.2L V8
Downstream Bosch Oxygen Sensor - for 1997 Mercedes E420 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: Downstream
Condition: New
Shipping Options: Ground
$55.43
(44) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
1997 Mercedes E420 4.2L V8
Upstream Left Bosch Oxygen Sensor - for 1997 Mercedes E420 - W0133-1606350 Click to Enlarge
Website Reviews
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Part Number: W0133-1606350
Brand: Bosch
Notes: OE Connector
Position: Upstream Left
Condition: New
Shipping Options: Ground, Overnight, 2 Day
List Price:
$195.00
Our Price: $65.58
(12) In Stock
This Part Fits:
Catalog: A
Vehicle
1997 Mercedes E420
Downstream Right Walker Products Oxygen Sensor - for 1997 Mercedes E420 - W0133-1916665 Click to Enlarge
Website Reviews
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Part Number: W0133-1916665
Brand: Walker Products
Notes: OE Connector
Position: Downstream Right
Condition: New
Shipping Options: Ground, Overnight, 2 Day
List Price:
$300.00
Our Price: $81.58
(4) In Stock
This Part Fits:
Catalog: A
Vehicle
1997 Mercedes E420
Bosch Oxygen Sensor - for 1995 Mercedes E420 - W0133-1606821 Click to Enlarge
5 Stars
Bosch W0133-1606821
Oxygen Sensor
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Part Number: W0133-1606821
Brand: Bosch
Notes: OE Connector
Condition: New
Shipping Options: Ground, Overnight, 2 Day
List Price:
$262.00
Our Price: $76.58
(5) In Stock
This Part Fits:
Catalog: A
Vehicle
1995 Mercedes E420
Upstream Left Walker Products Oxygen Sensor - for 1997 Mercedes E420 - W0133-1916885 Click to Enlarge
Website Reviews
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Part Number: W0133-1916885
Brand: Walker Products
Notes: OE Connector
Position: Upstream 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 E420
Downstream Right Bosch Oxygen Sensor - for 1997 Mercedes E420 - 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
(53) In Stock
This Part Fits:
Catalog: A
Vehicle
1997 Mercedes E420
Rear Left Bosch Oxygen Sensor - for 1997 Mercedes E420 - 000 540 71 17 Click to Enlarge
Website Reviews
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Part Number: 000 540 71 17
Brand: Bosch
Notes: Oxygen Sensor
Position: Rear Left
Condition: New
Shipping Options: Ground
$79.73
(8) In Stock
This Part Fits:
Catalog: G
Vehicle
1997 Mercedes E420
Downstream Denso Oxygen Sensor - for 1997 Mercedes E420 - 234-4172 Click to Enlarge
5 Stars
Denso 234-4172
Oxygen Sensor
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Part Number: 234-4172
Brand: Denso
Notes: OE Style -- O.E. Quality Replacement Sensor
Position: Downstream
Condition: New
Sensor Type: Heated
Shipping Options: Ground
$52.43
(44) In Stock
This Part Fits:
Catalog: B
Vehicle
1997 Mercedes E420
Bosch Oxygen Sensor - for 1994 Mercedes E420 - W0133-1606821 Click to Enlarge
5 Stars
Bosch W0133-1606821
Oxygen Sensor
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Part Number: W0133-1606821
Brand: Bosch
Notes: OE Connector
Condition: New
Shipping Options: Ground, Overnight, 2 Day
List Price:
$262.00
Our Price: $76.58
(5) In Stock
This Part Fits:
Catalog: A
Vehicle
1994 Mercedes E420
Upstream Right Walker Oxygen Sensor - for 1997 Mercedes E420 4.2L V8 FI Naturally Aspirated GAS - 350-34380 Click to Enlarge
Website Reviews
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Part Number: 350-34380
Brand: Walker
Notes: Aftermarket
  • Designed to meet or exceed OE specifications in form, fit and function. Global coverage for import and/or domestic applications. Direct fit replacement. Performance meets or exceeds OE performance. Increase fuel economy and lower emissions
Position: Upstream Right
Condition: New
Shipping Options: Ground
$50.43
(34) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
1997 Mercedes E420 4.2L V8 FI Naturally Aspirated GAS
Downstream Right Walker Oxygen Sensor - for 1997 Mercedes E420 4.2L V8 FI Naturally Aspirated GAS - 350-34508 Click to Enlarge
Website Reviews
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Part Number: 350-34508
Brand: Walker
Notes: Aftermarket
  • Designed to meet or exceed OE specifications in form, fit and function. Global coverage for import and/or domestic applications. Direct fit replacement. Performance meets or exceeds OE performance. Increase fuel economy and lower emissions
Position: Downstream Right
Condition: New
Shipping Options: Ground
$46.43
(99) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
1997 Mercedes E420 4.2L V8 FI Naturally Aspirated GAS
Downstream Left NGK Oxygen Sensor - for 1997 Mercedes E420 4.2L V8 - 25567 Click to Enlarge
Website Reviews
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Part Number: 25567
Brand: NGK
Notes: Direct Fit Oxygen Sensor -- B2S2; 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 Left
Condition: New
Shipping Options: Ground
$60.08
(4) In Stock
This Part Fits:
Catalog: H
Vehicle Engine
1997 Mercedes E420 4.2L V8
Upstream Right NGK Oxygen Sensor - for 1997 Mercedes E420 4.2L V8 - 25564 Click to Enlarge
Website Reviews
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Part Number: 25564
Brand: NGK
Notes: Direct Fit Oxygen Sensor -- B1S1; 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: Upstream Right
Condition: New
Shipping Options: Ground
$67.98
View Details
This Part Fits:
Catalog: C
Vehicle Engine
1997 Mercedes E420 4.2L V8
Downstream DIY Solutions Oxygen Sensor - for 1997 Mercedes E420 4.2L V8 - EMS00619 Click to Enlarge
Website Reviews
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Part Number: EMS00619
Brand: DIY Solutions
Notes: Oxygen Sensor -- V8 4.2L; Downstream
  • Quality Tested - built to a strict level of product standards.
  • Direct Fit Replacement
Position: Downstream
Condition: New
Shipping Options: Free Ground Shipping
$33.95
with FREE Shipping
(20) In Stock
This Part Fits:
Catalog: Q
Vehicle Engine
1997 Mercedes E420 4.2L V8
Standard Motor Products Oxygen Sensor - for 1997 Mercedes E420 4.2L V8 - SG300 Click to Enlarge
4.8 Stars
Standard Motor Products SG300
Oxygen Sensor
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Part Number: SG300
Brand: Standard Motor Products
Notes: Oxygen Sensor -- Right; Universal Upstream
Condition: New
Shipping Options: Ground
$53.98
(1) In Stock
This Part Fits:
Catalog: N
Vehicle Engine
1997 Mercedes E420 4.2L V8

Related Fuel Injection Parts

Oxygen Sensors available for the following Mercedes E420 years: 1997, 1995, 1994, 97, 95, 94. This part is also sometimes called Mercedes E420 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, S420, S320, 190E, SLK320, E55 AMG, C220, E500, S600, ML500, R350, 420SEL, C63 AMG, Sprinter 2500, SL320, 300SE, 500SL, GLK350, 560SEL, CLS550 and CLK350.

Mercedes E420 Oxygen Sensor Reviews
5 of 5
Verified Customer
10/23/13 07:29 AM - USA

I ordered the Denso Oxygen Sensors

and they arrived quickly.They solved the problem.

I am very satisfied. - Fast and Easy

- 1997 Mercedes E420 Oxygen Sensor
5 of 5
Verified Customer
10/12/14 03:39 PM - USA

I can't believe the selection of parts for my Mercedes. And the prices! A fraction of the cost at the dealer. Thanks Partsgeek - Robert Hayes

- 1997 Mercedes E420 Oxygen Sensor
5 of 5
Verified Customer
12/2/14 09:47 AM - USA

exact OEM fit. timely shipping great price. will order again - David

- 1997 Mercedes E420 Oxygen Sensor