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Replacement Filters > Custom Air Filter

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E-3780
 
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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 virtually every vehicle 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. [MORE]
Available Information
E-3780 Vehicle Applications


Part E-3780 Product Specifications
Product Style: Round Air Filter
Height: 2.25 in (57 mm)
Inner Wire: No
Inside Diameter: 13.375 in (340 mm)
Outside Diameter: 16.188 in (411 mm)
Top Style: Open
Top Material/Finish: None
Air Filter Shape: Round
Filter Material: Cotton Gauze
Flanges: None
Package Contents: 1 Air Filter
Package Quantity: 1
Filter Re-Oiling Amount: 2.08 oz (62 ml)
Weight: 3.8 lb (1.7 kg)
Product Box Length: 18.38 in (467 mm)
Product Box Width: 18.38 in (467 mm)
Product Box Height: 4.75 in (121 mm)



Accessories
99-5050.jpg
99-5050 - Filter Care Service Kit - Squeeze

Customer Feedback      Be the first to review part E-3780

I have now received the oil and air filters for all my cars- Range Rover Sport Supercharged, Jeep Grand Cherokee Limited, Jeep Rubicon, Mercedes Benz E430 and Porsche Cayenne S (only air filters for this one). I have used your products for a long time and am fully satisfied, so I keep the oil filters in stock for regular oil changes.
Humberto Pacheco, Costa Rica
Firstly I want to say your filters are AMAZING! I will never have any car without them again. My first experience with K&N filters was in my 1976 El Camino back in high school, Flipped the air cleaner lid and BOOM cheap open element air cleaner haha.

But my review isn't about that it is about my 2004 Mercedes Benz CLK55 AMG cabrio. I joined the military a few years ago and this was my purchase to reward myself. When I first got it I was not averaging great MPG as you can expect from any 19 year old with a 400 HP car. However once I got used to it I drove it for maybe one month without the K&N's in. Once I put them in the car was a lot smoother with it's acceleration it wasn't on or off power it was a more linear pull. I realized my Mileage went up about 1.5 MPG. Well the real story is in the last few years I have put 50000 miles on my car with the K&N filter. Doing math today for fun assuming gas was 4.00 a gallon ( which it was never that cheap you guys have saved me around $1310 dollars NOT including the price of factory mercedes filters for 50K miles. AMAZING Product Great quality I reccomend them to ALL of my friends and every car in our family has one.

Family car list just for fun
1968 Buick Skylark Custom
1976 Mercedes 450SEL
1976 Chevy El Camino Classic
1981 Mercedes 380SL
1986 Mercedes 420SEL
1988 Mercedes 190e 2.3
1988 Mercedes 420SEL
1991 Mercedes 190e 2.3
and 1995 Mercedes E320 Wagon
Domineque Jones, San Diego , California
Hello,
I installed the KN air filter in my 1975 Mercedes Benz 280SE and I noticed a very positive improvement in horsepower and gasoline consumption.  I've always taken very good care of my 37 year old car and this air filter was like nitro for my car
Well done KN folks
Stephen, Lompoc, California

K&N E-3780 fits the following:
1985 MERCEDES BENZ 250 2.5L L6 F/I - All
1984 MERCEDES BENZ 250 2.5L L6 F/I - All
1983 MERCEDES BENZ 250 2.5L L6 F/I - All
1982 MERCEDES BENZ 250T 2.5L L6 F/I - All
1982 MERCEDES BENZ 250 2.5L L6 F/I - All
1981 MERCEDES BENZ 250T 2.5L L6 F/I - All
1981 MERCEDES BENZ 250 2.5L L6 F/I - All
1980 MERCEDES BENZ 250T 2.5L L6 F/I - All
1980 MERCEDES BENZ 250 2.5L L6 F/I - All
1979 MERCEDES BENZ 250T 2.5L L6 F/I - All
1979 MERCEDES BENZ 250 2.5L L6 F/I - All
1978 MERCEDES BENZ 250T 2.5L L6 F/I - All
1978 MERCEDES BENZ 250 2.5L L6 F/I - All
1977 MERCEDES BENZ 250 2.5L L6 F/I - All
1976 MERCEDES BENZ 250 2.5L L6 F/I - All
1973 MERCEDES BENZ 250C 2.8L L6 CARB - All
1972 MERCEDES BENZ 250CE 2.5L L6 CARB - All
1972 MERCEDES BENZ 250C 2.8L L6 CARB - All
1972 MERCEDES BENZ 250C 2.5L L6 CARB - All
1971 MERCEDES BENZ 250CE 2.5L L6 CARB - All
1971 MERCEDES BENZ 250C 2.8L L6 CARB - All
1971 MERCEDES BENZ 250C 2.5L L6 CARB - All
1970 MERCEDES BENZ 250CE 2.5L L6 CARB - All
1970 MERCEDES BENZ 250C 2.8L L6 CARB - All
1970 MERCEDES BENZ 250C 2.5L L6 CARB - All
1969 MERCEDES BENZ 250S 2.5L L6 CARB - All
1969 MERCEDES BENZ 250CE 2.5L L6 CARB - All
1969 MERCEDES BENZ 250C 2.5L L6 CARB - All
1968 MERCEDES BENZ 250S 2.5L L6 CARB - All