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Your Vehicle 2014 Mercedes Benz GLK350 4Matic Sport Utility 204.988 V6 3.5L
ES#5506547 - 0009052205 - Exhaust Temperature Sensor - Catalytic Converter Forward - Two Required Per Vehicle - Bosch - Mercedes Benz

Exhaust Temperature Sensor

Catalytic Converter Forward - Two Required Per Vehicle
Bosch
Mfg Part #
0009052205 0009052205
ECS Part #
ES#5506547
Brand
Bosch

166.99
This product is lifetime replacement eligible Lifetime Replacement
This product is backed by our
Lifetime Replacement Program! Read more here
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Product Details

Your modern Mercedes-Benz diesel is an engineering marvel, designed to produce massive torque while keeping tailpipe emissions incredibly clean. To achieve this, the Engine Control Module (ECM) relies heavily on the Exhaust Gas Temperature (EGT) sensor. Threaded directly into the blazing hot exhaust stream, this critical component measures the exact temperature of the exhaust gases exiting the engine and flowing through the emissions system.

The ECM uses this real-time temperature data to optimize the air-fuel mixture, prevent catastrophic overheating of the turbocharger, and ensure the catalytic converter and Diesel Particulate Filter (DPF) operate safely within their thermal limits. The engine also requires this precise temperature data to trigger the critical "burn-off" phase (regeneration) of the DPF. When the EGT sensor fails, the engine computer loses its ability to monitor exhaust heat, immediately throwing your emissions system into disarray.

Common Signs of a Failing EGT Sensor:

  • Check Engine Light & Stored Codes: The most immediate sign is an illuminated Check Engine Light as the ECM detects abnormal temperature readings or electrical inconsistencies, logging specific diagnostic trouble codes (DTCs) in the system.

  • Failed DPF Regeneration: A dead sensor will prevent the ECM from initiating a DPF regeneration cycle, quickly leading to a heavily clogged particulate filter and severe exhaust restriction.

  • Poor Fuel Economy: A faulty EGT sensor can give wildly inaccurate temperature readings, leading the ECM to adjust the fuel-air mixture improperly. This inefficient combustion results in noticeably higher fuel consumption.

  • Engine Performance Issues & Limp Mode: If the ECM receives incorrect temperature data, it may proactively reduce engine power to prevent potential overheating during heavy acceleration or high-load situations. This causes sluggish acceleration or forces the vehicle into a heavily power-restricted "limp mode."

ECS Tuning Recommends for BlueTEC Owners: Don't let a faulty sensor lead to poor fuel mileage or a completely clogged, multi-thousand-dollar Diesel Particulate Filter! Replacing this EGT sensor is a highly rewarding DIY fix, but requires the right approach.

Tech Tip: Because this sensor lives in an environment of extreme heat and rapid cooling cycles, the threads almost always seize inside the exhaust bung. We highly recommend soaking the base of the old sensor in a quality penetrating oil for several hours before attempting to loosen it. Always use a proper line wrench or a slotted EGT/O2 sensor socket to avoid rounding off the hex head. Finally, ensure you apply a dab of extreme high-temp anti-seize to the threads of your new Bosch sensor before threading it in!

Uncompromising Bosch OE Quality (OE # 0009052205)

When dealing with the hyper-sensitive electronics that control your diesel emissions system, you should never compromise with cheap, inferior aftermarket sensors. As an Original Equipment (OE) supplier to Mercedes-Benz, Bosch likely manufactured the exact sensor your vehicle left the factory with.

Since Robert Bosch founded the “Workshop for Precision Mechanics and Electrical Engineering” in Stuttgart, Germany in 1886, the company has been at the absolute forefront of automotive innovation. In fact, Bosch literally paved the way for cleaner exhaust gases by bringing the first lambda sensors to market in 1976.

By choosing this direct-replacement OE Bosch Exhaust Gas Temperature Sensor, you are skipping the expensive dealer markup while guaranteeing perfect plug-and-play fitment, the factory-correct wire harness length, and the uncompromising accuracy and reliability your European diesel demands.

This Part Fits the Following Vehicles

Make Model Submodel Engine Year Chasis Special Fitment Notes
Mercedes Benz C300 4Matic V6 3.5L 276.957 2013 204.080 Use vehicle selector to confirm fitment
Mercedes Benz C300 4Matic Luxury V6 3.5L 276.957 2014 204.080 Use vehicle selector to confirm fitment
Mercedes Benz C300 4Matic Sport V6 3.5L 276.957 2013 204.080 Use vehicle selector to confirm fitment
Mercedes Benz C300 4Matic Sport V6 3.5L 276.957 2014 204.080 Use vehicle selector to confirm fitment
Mercedes Benz C350 4Matic V6 3.5L 2015 204.388 Use vehicle selector to confirm fitment
Mercedes Benz C350 4Matic V6 3.5L 276.957 2013 204.388 Use vehicle selector to confirm fitment
Mercedes Benz C350 4Matic V6 3.5L 276.957 2014 204.388 Use vehicle selector to confirm fitment
Mercedes Benz C350 Base V6 3.5L 2015 204.357 Use vehicle selector to confirm fitment
Mercedes Benz C350 Base V6 3.5L 276.957 2012 204.057 Use vehicle selector to confirm fitment
Mercedes Benz C350 Base V6 3.5L 276.957 2012 204.357 Use vehicle selector to confirm fitment
Mercedes Benz C350 Base V6 3.5L 276.957 2013 204.357 Use vehicle selector to confirm fitment
Mercedes Benz C350 Base V6 3.5L 276.957 2014 204.357 Use vehicle selector to confirm fitment
Mercedes Benz C350 Sport V6 3.5L 276.957 2013 204.057 Use vehicle selector to confirm fitment
Mercedes Benz C350 Sport V6 3.5L 276.957 2014 204.057 Use vehicle selector to confirm fitment
Mercedes Benz E350 4Matic V6 3.5L 2015 212.088 Use vehicle selector to confirm fitment
Mercedes Benz E350 4Matic V6 3.5L 2015 212.288 Use vehicle selector to confirm fitment
Mercedes Benz E350 4Matic V6 3.5L 2016 212.088 Use vehicle selector to confirm fitment
Mercedes Benz E350 4Matic V6 3.5L 2016 212.288 Use vehicle selector to confirm fitment
Mercedes Benz E350 4Matic V6 3.5L 276.952 2012 212.088 Use vehicle selector to confirm fitment
Mercedes Benz E350 4Matic V6 3.5L 276.952 2012 212.288 Use vehicle selector to confirm fitment
Mercedes Benz E350 4Matic V6 3.5L 276.952 2013 212.088 Use vehicle selector to confirm fitment
Mercedes Benz E350 4Matic V6 3.5L 276.952 2013 212.288 Use vehicle selector to confirm fitment
Mercedes Benz E350 4Matic V6 3.5L 276.952 2014 212.088 Use vehicle selector to confirm fitment
Mercedes Benz E350 4Matic V6 3.5L 276.952 2014 212.288 Use vehicle selector to confirm fitment
Mercedes Benz E350 4Matic V6 3.5L 276.957 2013 207.388 Use vehicle selector to confirm fitment
Mercedes Benz E350 4Matic V6 3.5L 276.957 2014 207.388 Use vehicle selector to confirm fitment
Mercedes Benz E350 Base V6 3.5L 2015 212.059 Use vehicle selector to confirm fitment
Mercedes Benz E350 Base V6 3.5L 2016 212.059 Use vehicle selector to confirm fitment
Mercedes Benz E350 Base V6 3.5L 276.952 2012 212.059 Use vehicle selector to confirm fitment
Mercedes Benz E350 Base V6 3.5L 276.952 2013 212.059 Use vehicle selector to confirm fitment
Mercedes Benz E350 Base V6 3.5L 276.952 2014 212.059 Use vehicle selector to confirm fitment
Mercedes Benz E350 Base V6 3.5L 276.957 2012 207.359 Use vehicle selector to confirm fitment
Mercedes Benz E350 Base V6 3.5L 276.957 2012 207.459 Use vehicle selector to confirm fitment
Mercedes Benz E350 Base V6 3.5L 276.957 2013 207.359 Use vehicle selector to confirm fitment
Mercedes Benz E350 Base V6 3.5L 276.957 2013 207.459 Use vehicle selector to confirm fitment
Mercedes Benz E350 Base V6 3.5L 276.957 2014 207.359 Use vehicle selector to confirm fitment
Mercedes Benz E350 Base V6 3.5L 276.957 2014 207.459 Use vehicle selector to confirm fitment
Mercedes Benz E400 4Matic V6 3.0L 2015 212.067 Use vehicle selector to confirm fitment
Mercedes Benz E400 Base V6 3.0L 2015 212.065 Use vehicle selector to confirm fitment
Mercedes Benz E400 Hybrid V6 3.5L 2015 212.095 Use vehicle selector to confirm fitment
Mercedes Benz E400 Hybrid V6 3.5L 276.952 2014 212.095 Use vehicle selector to confirm fitment
Mercedes Benz GLK350 4Matic V6 3.5L 2015 204.988 Use vehicle selector to confirm fitment
Mercedes Benz GLK350 4Matic V6 3.5L 276.957 2013 204.988 Use vehicle selector to confirm fitment
Mercedes Benz GLK350 4Matic V6 3.5L 276.957 2014 204.988 Use vehicle selector to confirm fitment
Mercedes Benz GLK350 Base V6 3.5L 2015 204.957 Use vehicle selector to confirm fitment
Mercedes Benz GLK350 Rear Wheel Drive V6 3.5L 276.957 2014 204.957 Use vehicle selector to confirm fitment
Mercedes Benz GLK350 Rear Wheel Drive V6 3.5L 276.984 2013 204.957 Use vehicle selector to confirm fitment
*The above product applications have been written by ECS Tuning. All warranties, product application, fitment, and performance are the responsibility of ECS Tuning. For additional information see the terms of use.

This Product Is Covered By Our Lifetime Replacement Program

Products protected by our Lifetime Replacement Program are covered for as long as you own the product, no need to worry about an expiration date. Purchase your products and enjoy some worry-free motoring, knowing we've got you covered.

If you have any questions, would like to learn more or are ready to place a replacement claim, click here!

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Return and Exchanges

Need to set up a return? Click here to begin: Return Process

All you need is your order number and email address.


New/Unused Product Returns

ECS Tuning will accept returns for unused products within 90 days of the ship date for a refund to the original payment method used. The customer is responsible for the return shipping costs and fees. If selecting to use a prepaid shipping label, the shipping cost will be deducted from the total refunded amount. All new/unused products must be new, unused and must be in the original packaging, including labeling, manuals, hardware, etc. Special order parts are non-refundable.

In the event that we find an error on our website or on behalf of an ECS Tuning Representative, we will provide a return shipping label from the original delivery location.

Refused Packages

Any domestic orders that are returned to ECS Tuning as refused by receiver or non-deliverable will be subject to a return handling fee and will be processed as a return in compliance with our standard return policy, including a 15% restocking fee.

Any international orders that are refused at the time of delivery will be subject to carrier abandonment of the package, at which time the ordered products would be discarded by the carrier. The customer will not be refunded for the value of the order and the discarded products are no longer retrievable.

Return Process

Return Process

ECS Tuning now offers an online returns solution! To get started, simply log into your ECS Tuning account, Click the "View Orders" button on the My Account home page and select the order that you wish to make a return on to begin. If you have any questions, feel free to reach out to our Customer Service Team for assistance!

Please note: Refunds will be processed to the original payment method used on the order or to an in store credit, respective to the type of return that is made as well as any pre-existing arrangements with an ECS Tuning Customer Service Representative. In the event that multiple forms of payment were used, we will refund the value to an in store credit. In the event that a return label is provided, these charges may be deducted from the total refund you receive.

Original shipping costs are non-refundable and the buyer is responsible for return shipping charges. ECS Tuning will not accept COD deliveries.


All in store credit balances will expire after one year from the original purchase date.

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Shipping Policy

Free Shipping On Orders $49 & Up

Items marked with a 'Free Shipping On Orders $49 and Up' logo may qualify for free standard economy ground shipping to the contiguous United States (48 states) for most orders with a value greater or equal to $49.00 USD. Oversized products and direct ship products are excluded from this offer unless otherwise noted.

Free Shipping

Items marked as 'Free Shipping' may qualify for free standard economy ground shipping to the contiguous United States (48 states). Oversized products and direct ship products are excluded from this offer unless otherwise noted.


The policies listed above are subject to change at any time without notice.

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Lifetime Replacement

Want to know more about our Lifetime Replacement program?

Click here to learn more.

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Why You Should Shop From ECS Tuning

ECS Tuning stands out as more than an automotive parts supplier-it's a vibrant community fueled by a shared passion for cars. Born from the enthusiasm of car lovers, we offer an unmatched understanding and commitment to the automotive world, providing high-quality parts and accessories sourced from our own experiences. Our selection is meticulously crafted to meet the highest standards of performance, quality, and design, catering to both the latest trends and classic styles.


Our distinct advantage lies in our passionate team and comprehensive support, offering expert advice and seamless service from selection to installation. Shopping with ECS brings exclusive perks, including our Lifetime Replacement Guarantee and free shipping on orders over $49, enhancing the value of every purchase. As a central hub for car enthusiasts, ECS Tuning fosters a rich community where ideas and experiences flourish, transforming us from a mere supplier into a platform where automotive dreams come to life.

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Cancellation Policy

At ECS Tuning, we understand that plans can change. That's why we offer a flexible cancellation policy for our customers. You may cancel your order at any time before you receive the shipment confirmation. This policy is designed to provide you with peace of mind and the flexibility to make adjustments to your purchases as needed. Should you decide to cancel your order, simply reach out to our customer service team, and we will assist you with the process swiftly and efficiently.

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