SKU: 37259404132

K&N Air Filter (33-2703)

Sale price$49.67 Regular price$55.19
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Ships within 48 hours · Estimated delivery Jul 21 - Jul 26

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Description

K&N Air Filter (33-2703)K&N's replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. We make over 1,200 different replacement air filters for the majority of vehicles on the road. These filters are washable and reusable and are custom designed to fit into your existing factory air box. Their drop in design means adding performance is simple. With most vehicles you simply remove the disposable air filter and replace

K&N's replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. We make over 1,200 different replacement air filters for the majority of vehicles on the road. These filters are washable and reusable and are custom designed to fit into your existing factory air box. Their drop-in design means adding performance is simple. With most vehicles you simply remove the disposable air filter and replace it with a K&N. See applicable instruction sheet for details. Our stock replacement air filters for street vehicles are covered by our famous K&N Million-Mile Limited Warranty and will be the last air filter your vehicle will ever need.

Features:

  • Designed to boost horsepower and rate of acceleration
  • Can be cleaned and used again
  • High air flow with exceptional filtration
  • Lasts up to 50,000 miles before cleaning is required depending on driving conditions
  • Works with original equipment manufacturer vehicle electronics
  • Emissions legal in all 50 US states
  • Will NOT void vehicle warranty

Most air filters on the market are a compromise. Many high-performance filters deliver better airflow, but sacrifice filtering ability and engine protection in the process. OEM filters, which are usually made of paper, filter adequately but at the expense of airflow. And airflow decreases as these air filters become dirty. Not so the K&N air filter. K&N air filters increase airflow without decreasing filtration ability, and the increased airflow remains consistent throughout the filter's service interval. The secret is in the K&N filter's construction.

K&N's initial goal was to develop a filter that would deliver increased airflow during dirty, dusty off-road racing conditions. Increased airflow improves the efficiency of the combustion process, increasing horsepower and torque. But just increasing airflow without ensuring adequate filtration under those conditions would result in a ruined engine. K&N's solution was a filter design consisting of 4 to 6 layers of cotton gauze sandwiched between two aluminum wire screens. The cotton is then treated with a specially formulated grade of oil that causes tackiness throughout the cotton’s microscopic strands. The resulting K&N filter not only delivers increased airflow while trapping dirt particles that could harm your engine, that level of airflow is maintained even as the filter gets dirty. The layers of oiled cotton fibers in the K&N filter trap dirt particles that are smaller than the holes in the filter media. The thickness of the layers also allows the K&N filter to trap dirt and dust on many levels, trapping more dirt without decreasing airflow. Contrast this with a paper filter that only traps dirt on its surface; as the surface area becomes clogged, the airflow rate goes down.

Each K&N air filter is custom designed to fit into your existing factory air box. The K&N filter is economical because it's the last air filter you'll have to buy for your car. It can be washed and reused many times, and since you can usually drive up to 50,000 miles between servicing, you won't have to clean it very often. And every K&N filter is backed by K&N's Million Mile Limited Warranty. By the way, check the CARiD reviews and read what the customers think of K&N porducts.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 37259404132

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4.3 ★★★★★
Based on 21 reviews
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S
Verified Purchase
Steve H
Houston, US
★★★★★ 5
It's the Genuine Part - Fits Large Selection of Mercedes Cars
Size: Pack of 1
There is no doubt that I like to take care of my vehicle. Therefore, with a car that calls for oil changes only every 10,000-13,000 miles, I want to be sure to use the approved oil filter that can survive that long. First, let me put this early in the review. I had had the Mercedes Branded and Box part side by side with this one. They are identical besides the labeling (and part of the labeling is the same as the Mercedes branded one still has the Mann logo and part number too). They are identical because Mann makes this filter, their own brand, and the filter for Mercedes. They are truly one in the same. These Mann HU 718/5 have a beautiful, strong construction, and indeed they are actually the OEM part. The OEM Mercedes-Genuine part has the Mann HU 718/5 part number right next to the Mercedes part number. The only thing missing on this filter is the Mercedes-Benz star logo, Mercedes part number, and the Mercedes-Benz box. Indeed, the filter is made in Germany as well for anyone wondering. Several of the other aftermarket brands actually use the OEM filter rebranded too, as of this writing, K&N oil, and Purolator oil. However, those products tend to be much more costly since those companies must buy the filters from Mann and resell them. The Mann branded filter is the best value and easiest to procure since it is right here on Amazon! How could it be any easier? I will only say that the OEM dealer Mercedes labeled filter is not too much more money than this one. Therefore, if you ever happen to be at the dealer or know of a dealer that has good parts pricing, you shouldn't necessary run from the genuine filter. It's the same as this and depending on the dealer, might just be a couple dollars more, if you're in a pinch and can't wait. Overall, extremely recommended filter. You can't argue with the original product! This OEM filter is designed to hold up for the extremely long oil change intervals recommended by Mercedes. Just be sure to use this filter along with an approved oil such as Mobil 1 0w40.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 8, 2012
N
Verified Purchase
Nathan S
Carnegie, US
★★★★★ 4
Good, inexpensive filter for Euro cars
Size: Pack of 1
I use these on my BMW, Mercedes, and Volvo cars ('02 and a '99, don't get any ideas) and they work great. Much nicer than the cheap STP / Fram crap at AutoZone or O'Reilly, and not that much more expensive. The Merc and Volvo share the same filter model, and these come with 2 different sets of o-rings and washers in little baggies labeled "Mercedes" and "Volvo" which I thought was pretty cool.
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Reviewed in the United States on June 19, 2024
A
Verified Purchase
al thompson
Belleville, US
★★★★★ 5
I use on my 2012 GL450
Size: Pack of 1
I use on my 2012 GL450 very pleased.
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Reviewed in the United States on April 2, 2026
J
Verified Purchase
Jeff
Pawtucket, US
★★★★★ 5
Top Quality Filter
Size: Pack of 1
I always go with Mann Filters, Trust me, all filters are not equal and these are one of the best you can buy
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Reviewed in the United States on February 24, 2026
A
Verified Purchase
A regular Joe
Los Angeles, US
★★★★★ 5
Nice Filter Wrench for my Volvo V70XC!
Size: 86mm x 16
I was needing a filter wrench for my 2001 Volvo V70XC and couldn't find anything that fit from the local auto parts stores. Not knowing what to expect, I took a chance on this one since most of the reviews were 5 star and the price was exceptional. When I received it, I was quite pleased with the construction and finish. I have a brand new oil filter housing for my Volvo (since the one currently on my car is chewed up from the former owner using slip-jaw pliers or something on it) and the fit is perfect! I have worked as a mechanic my whole life (aircraft & automotive), and spent a couple of years as a technician at an automotive dealership and I can say that the tool looks like it is designed for heavy-duty use. The stamped steel housing is thicker than those found in local auto parts stores and the drive adapter has a thick arc welded bead along the inside of the tool. So, it appears to be made to hold up to some fairly heavy torque. Although the product description states that it is 1/2", the drive adapter is actually made for direct attachment to a 3/8" drive. Perhaps this error stems from the fact that they offer a much larger wrench (118-131mm) and this is a more accurate description of their other offerings. The 3/8" drive adapter works perfectly and a 21mm socket fits nicely on the external hex. Fits with SAE sizes are a mixed bag, though. I was able to attach a 13/16" 12-pt. box-end wrench, but not the opposing open-end. A similarly sized 13/16" 6-pt. socket was extremely tight, so I wouldn't recommend this size and would just go with the 21mm if you had to use the external hex. Otherwise, just use the 3/8" drive adapter for easiest use of this tool. The adapter also incorporates ball detents on all four sides of the internal 3/8" drive, so your ratchet or extension won't easily fall off while in use. Since this tool is made for oil filter removal & installation, I'm sure that it will deliver as promised. I'll post an update after my next oil change and I get a chance to use it and install the new filter housing I have.
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Reviewed in the United States on January 25, 2014

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