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Oxygen Sensor
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Oxygen Sensor - Downstream Left or Downstream Right (NGK) for 2015-2021 Mercedes-Benz NEW

Out of Stock
$ 170 .96
120-DayReturns
LifetimeWarranty
100%Money-Back

Product Notes Read before buying

Position: Downstream Left (Driver Side) or Downstream Right (Passenger Side)
Sell Out and Reorder 25270; B1S2 OE MFR: NTK
Direct Fit Oxygen Sensor
NTK 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, NTK 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.
Brand: NGK
Condition: New
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Specifications & Info


Attribute Value
Connector Gender Female
Connector Shape Rectangular
Grade Type Standard Replacement
Heated Yes
Hex Size 7/8" (22mm)
Mounting Type Threaded
Sensor Type Narrow-band
Technology Switching Zirconia Type
Terminal Gender Female
Terminal Quantity 4
Terminal Type Pin
Thread Diameter 18.00
Wire Quantity 4
Wiring Harness Length 15.00, 381.00
Wrench Size 7/8" (22mm)

Vehicle Fitment Guide

This part fits the following vehicles:

Mercedes-Benz 15 models (tapclick to expand)(tapclick to hide)
AMG GT 2017-2021 (tapclick to expand)(tapclick to hide)
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SubmodelSUB-
MODEL		 Body Style Years Engine Attributes
Base Convertible 2018 - 2021 V8 4.0L Turbo RWD Automatic Dual Clutch
Base Coupe 2017 - 2021 V8 4.0L Turbo RWD Automatic Dual Clutch
Base Hatchback 2017 - 2021 V8 4.0L Turbo RWD Automatic Dual Clutch
AMG GT Black Series 2021 (tapclick to expand)(tapclick to hide)
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SubmodelSUB-
MODEL		 Body Style Years Engine Attributes
Base Hatchback 2021 V8 4.0L Turbo RWD Automatic Dual Clutch
AMG GT C 2018-2021 (tapclick to expand)(tapclick to hide)
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SubmodelSUB-
MODEL		 Body Style Years Engine Attributes
Base Convertible 2018 - 2021 V8 4.0L Turbo RWD Automatic Dual Clutch
Base Hatchback 2018 - 2021 V8 4.0L Turbo RWD Automatic Dual Clutch
Roadster Convertible 2019 - 2020 V8 4.0L Turbo RWD Automatic Dual Clutch
AMG GT R 2018-2020 (tapclick to expand)(tapclick to hide)
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SubmodelSUB-
MODEL		 Body Style Years Engine Attributes
Base Convertible 2020 V8 4.0L Turbo RWD Automatic Dual Clutch
Base Hatchback 2018 - 2020 V8 4.0L Turbo RWD Automatic Dual Clutch
AMG GT R Pro 2020 (tapclick to expand)(tapclick to hide)
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SubmodelSUB-
MODEL		 Body Style Years Engine Attributes
Base Hatchback 2020 V8 4.0L Turbo RWD Automatic Dual Clutch
AMG GT S 2016-2019 (tapclick to expand)(tapclick to hide)
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SubmodelSUB-
MODEL		 Body Style Years Engine Attributes
Base Hatchback 2016 - 2019 V8 4.0L Turbo RWD Automatic Dual Clutch
Base Hatchback 2016 V8 4.0L Turbo RWD Manual
E400 2015-2017 (tapclick to expand)(tapclick to hide)
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SubmodelSUB-
MODEL		 Body Style Years Engine Attributes
4Matic Coupe 2015 - 2017 V6 3.0L Turbo AWD Automatic
4Matic Sedan 2015 - 2017 V6 3.0L Turbo AWD Automatic
4Matic Wagon 2015 - 2017 V6 3.0L Turbo AWD Automatic
4Matic Avantgarde Sedan 2017 V6 3.5L Turbo AWD Automatic
4Matic Exclusive Sedan 2017 V6 3.5L Turbo AWD Automatic
Base Convertible 2015 - 2017 V6 3.0L Turbo RWD Automatic
Base Coupe 2015 - 2017 V6 3.0L Turbo RWD Automatic
Base Sedan 2015 - 2016 V6 3.0L Turbo RWD Automatic
CGI Convertible 2017 V6 3.0L Turbo RWD Automatic
CGI Coupe 2017 V6 3.0L Turbo RWD Automatic
Hybrid Sedan 2015 V6 3.5L FULL HYBRID EV-GAS (FHEV) RWD Automatic
Sport Sedan 2015 - 2016 V6 3.0L Turbo RWD Automatic
GL450 2016 (tapclick to expand)(tapclick to hide)
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SubmodelSUB-
MODEL		 Body Style Years Engine Attributes
4Matic SUV 2016 V6 3.0L Turbo AWD Automatic
GLE400 2016-2019 (tapclick to expand)(tapclick to hide)
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SubmodelSUB-
MODEL		 Body Style Years Engine Attributes
4Matic SUV 2016 - 2019 V6 3.0L Turbo AWD Automatic
Guard VR4 SUV 2018 V6 3.0L Turbo AWD Automatic Dual Clutch
Sport SUV 2017 - 2019 V6 3.0L Turbo AWD Automatic Dual Clutch
Sport SUV 2016 V6 3.0L Turbo AWD Automatic
GLE43 AMG 2017-2019 (tapclick to expand)(tapclick to hide)
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SubmodelSUB-
MODEL		 Body Style Years Engine Attributes
4Matic SUV 2018 V6 3.0L Turbo AWD Automatic Dual Clutch
4Matic SUV 2017 - 2019 V6 3.0L Turbo AWD Automatic
4Matic Sport Utility Coupe 2017 - 2019 V6 3.0L Turbo AWD Automatic
GLE450 AMG 2016 (tapclick to expand)(tapclick to hide)
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SubmodelSUB-
MODEL		 Body Style Years Engine Attributes
4Matic SUV 2016 V6 3.0L Turbo AWD Automatic
4Matic Sport Utility Coupe 2016 V6 3.0L Turbo AWD Automatic
Sport Sport Utility Coupe 2016 V6 3.0L Turbo AWD Automatic
GLE550e 2016-2018 (tapclick to expand)(tapclick to hide)
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SubmodelSUB-
MODEL		 Body Style Years Engine Attributes
4Matic SUV 2016 - 2018 V6 3.0L PLUG-IN HYBRID EV-GAS (PHEV) Turbo AWD Automatic
GLS450 2017-2019 (tapclick to expand)(tapclick to hide)
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SubmodelSUB-
MODEL		 Body Style Years Engine Attributes
4Matic SUV 2017 - 2019 V6 3.0L Turbo AWD Automatic
S550e 2015-2017 (tapclick to expand)(tapclick to hide)
Swipe left/right to see more info
SubmodelSUB-
MODEL		 Body Style Years Engine Attributes
Base Sedan 2015 - 2017 V6 3.0L PLUG-IN HYBRID EV-GAS (PHEV) Turbo RWD Automatic
SL400 2016 (tapclick to expand)(tapclick to hide)
Swipe left/right to see more info
SubmodelSUB-
MODEL		 Body Style Years Engine Attributes
Base Convertible 2016 V6 3.0L Turbo RWD Automatic
Verify before ordering — please confirm your vehicle's year, make, model and sub-model specifications before placing your order. If anything is unclear, our customer service team is available to help.

Policies, in plain English.

Shipping Information

We offer fast, reliable shipping on all orders:

  • Ships to all countries via US Postal Service Priority Mail.
  • Most orders ship within 1 business day.
  • Delivery time: 1-4 business days after shipment.
  • International shipping available, including APO/FPO addresses.
  • Tracking information provided for all shipments.
  • Additional handling fees may apply for oversized/overweight packages.

Lifetime Warranty

This part comes with a limited lifetime warranty. Warranty begins on the original purchase date.

Warranty does NOT cover:

  • Shipping costs or labor expenses.
  • Installation errors.
  • Parts used for racing.
  • Commercial vehicle parts.

Returns (120 Days)

We want you to be 100% satisfied with your purchase. That's why we offer:

  • 120-Day Returns - Return any part within 120 days from date of receipt.
  • Must obtain RMA (Return Merchandise Authorization) number before returning.
  • Parts must be in original condition, uninstalled, unaltered, and in original packaging.
  • Important: Electrical parts are not returnable if unsealed.
  • Please inspect parts upon arrival and notify us within 5 days of receiving incorrect or damaged parts.
  • Refunds processed after warehouse receives return and credited to original payment method.
NTK 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, NTK 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.

Interchange Parts

Brand Part Number
DENSO Auto Parts 234-4586
Mercedes-Benz 0005421900

Fits Years: 2015 2016 2017 2018 2019 2020 2021

Fits Models: AMG GT, AMG GT Black Series, AMG GT C, AMG GT R, AMG GT R Pro, AMG GT S, E400, GL450, GLE400, GLE43 AMG, GLE450 AMG, GLE550e, GLS450, S550e, SL400

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120
Day Return Window

4× the Industry Standard

Most retailers stop at 30 days. We give you a full four months to install, test, and return for a 100% refund — return shipping on us.

NEW
Direct-Fit Replacement

Engineered To OEM Specs

Brand-new aftermarket parts from trusted suppliers — built to original-equipment specifications so they fit and function like the factory unit, at a fraction of the price.

What buyers are saying.

★★★★★ 4.9 1,451 verified reviews

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