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HomeShopFiltersAir FiltersMercedes-Benz R-Class (W251, V251) R 350 CDI 4-Matic (251.023, 251.123) Air Filter – A 642 094 30 04 / A 642 094 22 04 / A 642 094 03 04 / A 642 094 02 04 (2005 – 2017)
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Mercedes S350 CDI Air Filter

Mercedes-Benz R-Class (W251, V251) R 350 CDI 4-Matic (251.023, 251.123) Air Filter – A 642 094 30 04 / A 642 094 22 04 / A 642 094 03 04 / A 642 094 02 04 (2005 – 2017)

SKU: ST1760

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Original price was: ₹1,600.00.Current price is: ₹800.00.

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Product information
Weight 1 kg
OEM Cross Reference

A 642 094 30 04 / A 642 094 22 04 / A 642 094 03 04 / A 642 094 02 04
Vehicle Brand

Model

,

Year - Range

Brand of the Product

Compatibility

Mercedes-Benz R Class (W251, V251) 2005 – 2017
HSN Code

84212300
Description
Buy Mercedes R350 CDI 4-Matic Air Filter A6420943004 Genuine OEM Mercedes R350 CDI 4-Matic Air Filter A6420943004 is a 100% Genuine Mercedes-Benz OEM replacement air filter designed for Mercedes-Benz R-Class (W251, V251) R 350 CDI 4-Matic (251.023, 251.123) (2005 – 2017). Compatible with OEM part numbers A 642 094 30 04, A 642 094 22 04, A 642 094 03 04 and A 642 094 02 04, this premium air filter provides superior filtration, unrestricted airflow and maximum engine protection. It improves combustion efficiency, turbocharger response, throttle response, fuel economy and overall engine performance while extending the service life of the OM642 V6 turbo diesel engine. Buy genuine Mercedes-Benz air filters online from JK Automotive with fast shipping across India.

Description

Buy Mercedes R350 CDI 4-Matic Air Filter A6420943004 Genuine OEM.

Mercedes R350 CDI 4-Matic Air Filter A6420943004 is a genuine Mercedes-Benz OEM replacement air filter specifically designed for Mercedes-Benz R-Class (W251, V251) R 350 CDI 4-Matic (251.023, 251.123) (2005 – 2017). It is compatible with OEM part numbers A 642 094 30 04, A 642 094 22 04, A 642 094 03 04 and A 642 094 02 04, ensuring precise fitment and reliable performance.

The premium multi-layer filtration media efficiently captures dust, dirt, pollen, sand, soot and other airborne contaminants before they enter the engine intake system. It maintains unrestricted airflow while delivering excellent filtration efficiency for cleaner combustion and optimum engine performance.

Mercedes R350 CDI 4-Matic Air Filter A6420943004 improves combustion efficiency, turbocharger response, throttle response and fuel economy. It also provides smoother acceleration, consistent power delivery and reliable performance while protecting the OM642 V6 turbo diesel engine.

Regular replacement of the air filter protects essential engine components including the turbocharger, mass airflow sensor, intake manifold, intake valves, pistons and cylinder walls. Clean intake air helps extend engine life while maintaining factory performance and reducing engine wear.

Using a Genuine Mercedes-Benz OEM air filter guarantees factory-quality fitment, superior durability and long-lasting filtration performance. It is engineered to meet Mercedes-Benz quality standards for dependable operation and long service life.

Buy Mercedes R350 CDI 4-Matic Air Filter A6420943004 from JK Automotive for 100% genuine Mercedes-Benz OEM spare parts, competitive pricing, expert technical support, secure packaging and fast shipping across India.

Compatible vehicles

ManufacturerModelYear-Range
Mercedes-BenzR-Class (W251V251)

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Questions and Answers

How do I know if this air filter is the exact correct fit for my specific Mercedes-Benz R-Class premium diesel model?
This engine air filter is precision-engineered to fit the unique Mercedes-Benz R-Class W251 and long-wheelbase V251 crossover platforms, specifically the R 350 CDI 4-Matic turbo-diesel variants carrying the 251.023 or 251.123 chassis designations built within the vehicle production window of 2005 and 2017. To guarantee absolute compatibility with your vehicle, you must cross-reference your existing factory filter with the official original equipment manufacturer part numbers, which are designated as A 642 094 30 04, A 642 094 22 04, A 642 094 03 04, or A 642 094 02 04. This component is built specifically to accommodate the structural layout and unique high-pressure airflow requirements of the common-rail diesel V6 OM642 engine configuration, ensuring a flawless airtight seal inside the factory air box housing. If you are currently shopping for the official Mercedes-Benz R-Class (W251, V251) R 350 CDI 4-Matic (251.023, 251.123) Air Filter - A 642 094 30 04 / A 642 094 22 04 / A 642 094 03 04 / A 642 094 02 04 (2005 – 2017) element, checking your vehicle’s identification number against your owner's service manual or consulting a certified Mercedes-Benz technician will confirm if your luxury crossover uses this exact rectangular media configuration. Avoid ordering based solely on the model year, as mid-cycle refreshes or regional engine variations can alter the filtration system dimensions significantly across different markets globally. [1, 2, 3]
What are the primary performance benefits of upgrading to this premium engine air filter replacement?
Installing this premium replacement air filter directly restores and optimizes the internal combustion efficiency of your common-rail diesel V6 R 350 CDI power plant by maximizing clean volumetric airflow into the turbocharger intake system. The highly specialized synthetic or cellulose fiber blend media is structured with precise pleating density to capture micro-particles, road debris, soot, and pollen before they can compromise sensitive internal engine components or scratch cylinder walls. By minimizing airflow restriction while maintaining exceptional filtration efficiency, this component allows the turbocharger to compress clean air more effortlessly, which directly translates to crisper throttle response and smoother overall acceleration across the power band. Upgrading your vehicle to a fresh Mercedes-Benz R-Class (W251, V251) R 350 CDI 4-Matic (251.023, 251.123) Air Filter - A 642 094 30 04 / A 642 094 22 04 / A 642 094 03 04 / A 642 094 02 04 (2005 – 2017) prevents the vehicle's electronic control unit from adjusting fuel trims unnecessarily to compensate for a choked intake system, thereby preserving your luxury grand tourer's original factory performance specifications. Investing in a high-quality filter ensures that your luxury cruiser maintains its iconic mechanical refinement and structural longevity for thousands of miles to come.
3. Can a clogged air filter affect the fuel economy and emissions output of my Mercedes R 350 CDI 4-Matic?
Yes, a severely clogged or heavily contaminated engine air filter will drastically degrade your vehicle's fuel economy while simultaneously increasing harmful tailpipe emissions due to altered air-to-fuel ratios inside the combustion chamber. When air intake flow is constricted by trapped dirt and debris, the V6 diesel engine is forced to work substantially harder to draw in the necessary volume of oxygen required for clean, complete fuel combustion cycles. This restriction induces a richer fuel mixture, meaning the engine burns more diesel than necessary, which rapidly decreases your miles per gallon and limits the performance optimization managed by the 4-Matic all-wheel-drive system electronics. Over time, running a vehicle without a pristine Mercedes-Benz R-Class (W251, V251) R 350 CDI 4-Matic (251.023, 251.123) Air Filter - A 642 094 30 04 / A 642 094 22 04 / A 642 094 03 04 / A 642 094 02 04 (2005 – 2017) setup places excessive strain on the oxygen sensors and can prematurely foul or clog your expensive diesel particulate filter system due to excessive soot loading. Regularly replacing your filtration element ensures a crisp, clean burn that lowers environmental emissions, maximizes fuel efficiency, protects auxiliary exhaust electronics, and prevents unexpected diagnostic trouble codes or check engine lights from illuminating on your dashboard. [1]
What is the recommended service interval for changing the W251 R 350 CDI air filter?
The standard manufacturer recommendation for replacing the air filter element on a W251 Mercedes-Benz R 350 CDI generally falls between every fifteen thousand to thirty thousand miles, or approximately every two years under ordinary highway driving environments. However, if you frequently operate your premium luxury grand tourer in severe driving conditions, such as heavy family towing, long road trips, congested urban commuter traffic, or dusty regional roads, you should inspect and replace the filter much sooner, potentially every ten thousand miles. Neglecting this simple preventative maintenance task causes the filter media to become saturated with fine atmospheric dust particles, which slowly chokes off the engine's oxygen supply and reduces the vehicle's operational efficiency. A good rule of thumb for luxury vehicle care is to visually inspect the condition of your filtration system to determine if you need to install a new Mercedes-Benz R-Class (W251, V251) R 350 CDI 4-Matic (251.023, 251.123) Air Filter - A 642 094 30 04 / A 642 094 22 04 / A 642 094 03 04 / A 642 094 02 04 (2005 – 2017) unit to clear out excessive dark discoloration or trapped physical debris within the deep pleats. Replacing this inexpensive component proactively protects your precision-engineered turbocharged powertrain from accelerated internal wear and guarantees that the engine always operates under optimal thermodynamic and mechanical conditions.
What are the common symptoms that indicate my Mercedes-Benz W251 engine air filter needs urgent replacement?
When your Mercedes-Benz R-Class air filter becomes overly saturated with contaminants, your vehicle will exhibit several distinct physical warning signs that indicate an immediate replacement is required to prevent further mechanical degradation. You will likely notice a sluggish or delayed throttle response when pressing the gas pedal, as the heavy-duty V6 turbocharger struggles to pull enough fresh atmospheric oxygen through the blocked filtration media to accelerate efficiently. The engine may also exhibit a rough, unstable idle or produce unusual muffled coughing sounds from the intake tract when starting the car up cold in the morning. In more severe cases of air starvation, you might notice dark smoke or a strong smell of unburnt diesel exiting the exhaust pipe, accompanied by a noticeable drop in overall fuel economy, smooth shifting transitions, and all-wheel-drive power delivery under load. For those maintaining their vehicles regularly, swapping old parts for a fresh Mercedes-Benz R-Class (W251, V251) R 350 CDI 4-Matic (251.023, 251.123) Air Filter - A 642 094 30 04 / A 642 094 22 04 / A 642 094 03 04 / A 642 094 02 04 (2005 – 2017) avoids triggering the mass airflow sensor to send error signals to the primary engine control module, ultimately illuminating the check engine light on your dashboard. [1]
How does a premium air filter protect the sensitive Mass Air Flow sensor inside the W251 engine bay?
The Mass Air Flow sensor is a highly precise electronic component situated directly downstream from your air filter housing, and it relies on a clean environment to accurately measure the volume and temperature of air entering the engine. Fitting your luxury premium SUV with a high-grade Mercedes-Benz R-Class (W251, V251) R 350 CDI 4-Matic (251.023, 251.123) Air Filter - A 642 094 30 04 / A 642 094 22 04 / A 642 094 03 04 / A 642 094 02 04 (2005 – 2017) prevents microscopic dust particles, moisture droplets, and loose fibers from breaking away from the filter media and contaminating the delicate hot wire element inside the sensor housing. If a low-quality or degraded filter allows debris to pass through, these particles will bake onto the sensor's measuring wire, causing it to send incorrect data to the engine computer regarding the incoming air volume. This contamination results in poor engine driveability, frequent misfires, rough shifting patterns from the automatic transmission, and expensive diagnostic repair bills for a replacement sensor. By investing in a high-efficiency filter with durable, non-shedding media fibers and a secure rubber seal, you effectively isolate this sensitive electronic sensor from atmospheric hazards, ensuring stable engine management performance.
How do I properly install these new air filters into the W251 housing without damaging components?
A professional installation relies on patient alignment and tracking methods. Allow the engine bay to cool completely before unlatching the front air ducts and rear retaining clip on the throttle neck. Carefully lift the heavy plastic engine shroud upward off its rubber locating studs and flip it onto a clean workbench lined with a soft towel. Loosen the Torx backing screws in a balanced cross pattern, lift off the access lids, and use a dry microfiber cloth to completely clear out trapped leaves or sandy grit from the internal tracks. Press the fresh elements entirely flat into the lower seating guides, ensuring the rubber perimeter sealing rings remain level and un-pinched. Re-secure the backing plates, and firmly push the cover back onto the engine studs until it fully seats, checking that all duct pipes lock air-tight.
High-exposure terrain loads the pleated paper channels with fine abrasive elements significantly quicker than standard highway cruising. Under these severe operational environments, a quick inspection every 10,000 kilometres followed by a hard replacement at 15,000 kilometres will safeguard engine tolerances and optimize fuel atomization.

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