33-2051 Image

Replacement Filters > Replacement Air Filter

 List Price: $71.99
Your Price: $48.99

You Save 31.9%

Find a Local K&N Dealer


In Stock & Ready to Ship!
 Free Ground Shipping!

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 Information on Replacement Air Filters]
  • 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
  • Million Mile Limited Warranty®
Available Information
33-2051 Cross Reference
Installation Instruction Sheet
33-2051 Vehicle Applications

Part 33-2051 Product Specifications
Product Style: Panel Air Filter
Height: 1.063 in (27 mm)
Outside Length: 13.75 in (349 mm)
Outside Width: 4.125 in (105 mm)
Air Filter Shape: Panel
Filter Material: Cotton Gauze
Package Contents: 1 Air Filter
Package Quantity: 1
Filter Re-Oiling Amount: 0.8 oz (24 ml)
Inner Wire: No
Top Style: Open
Weight: 1.1 lb (0.5 kg)
Product Box Length: 8.31 in (211 mm)
Product Box Width: 1.75 in (44 mm)
Product Box Height: 17.19 in (437 mm)

Customer Feedback      Be the first to review part 33-2051

K&N Air Filter

I drive a 1996 Buick Roadmaster with the LT-1, 5.7 litre engine and 128K miles. I was familiar with your products from seeing them installed on shows on Speed Channel.

My friend recently put an air filter in his 4.0 litre V-8 Dodge truck on recommendations from friends. He experienced both power and gas mileage increase...primary reason for his buying K&N was gas mileage increase.

On his recommendation, I put one in my car and found an immediate increase in power and smoother, quicker transitions through the gears of my transmission...requiring less pedal to effect a downshift. (Transmission new at 118K miles.)

I usually get 16.5 mpg around town and 27 mpg on the highway. (A 2:56 rear helps!) I look forward to increasing my mileage with your product, as I no doubt will. Fellow who sold me the filter says he gets more power and 2 mpg more on his old Ford Explorer. Will let you know how I make out.

UPDATE July 9, 2007
Results for '96 Roadmaster

The mileage results for '96 Roadmaster with 129K miles are exciting. For a 215 mile around town route my mileage improved from 16.5 mpg to 19.7 mpg with the A/C on about half the time.

On a 300 mile loop to NJ and back my gas mileage went from 27 mpg to 29.55 mpg. It was a 93° day and the A/C was running both ways. No attempt was made to hold the car back to 65 mph to improve the mileage. Speeds averaged between 70 and 80 mph.

Vincent H. D'Agostino, Honesdale, Pennsylvania
Excellent oil filter. Been using it for approximately 15 years now with no issues. I use it on my 1994 Chevrolet Silverado 1500 extended cab 2 wheel drive with over 254000 miles on it with the original motor that has never been rebuilt.
Anthony Clark II, Nashville, Arkansas
I've had K&N in all my cars for the past 20 years. The response after install is always noticeable whether on my C5 Vette, Honda van, wife's Buick or my 49 Ford w/LS3 engine. My biggest problem has been my wife has gon in for oil changes and the dummies do not read the notice and replace my K&N with paper. Keep up improving em.
Lewis, Pflugerville, Texas