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57i Series Kits > Performance Intake Kit

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57-0425
 
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K&N 57i Series Induction Kits are specifically designed for each different vehicle and will free your car from the size restriction that comes with the factory air box. These economical kits can take a variety of different forms based on vehicle characteristics and available space under the hood. Each kit is designed to provide power throughout the RPM range. The extra surface area of these open-air air filters provide even more airflow at lower restriction than a K&N O/E replacement filter which is always limited to the size of the factory air box. The larger air filter also captures and holds more dirt increasing its service life before a cleaning is required (up to 100,000 miles). The filter is either directly attached to the engine carburetor or throttle body or indirectly through a tube assembly running from the filter to the engine. All adapters are made from high quality materials such as steel, aluminum, silicon or reinforced nylon to ensure long life. 57i Intakes are not legal for use in California and other US States adopting California emission standards. [MORE]
Available Information
Installation Instruction Sheet
Instructions Francaises - French
57-0425 Vehicle Applications


Part 57-0425 Product Specifications
Product Style: 57i Series International Kits
Replacement Filter: RC-4550
Street Legal In All US States: No
TUV Approved (Europe): No
Type: Gen I
Intake Pipe Color / Finish: Black
Base Outside Diameter: 5.375 in (137 mm)
California Restricted: Not legal for sale or use in California
Flange Inside Diameter: 4 in (102 mm)
Flange Length: 0.625 in (16 mm)
Flange Type: Centered
Height: 6 in (152 mm)
Top Material/Finish: Chrome
Top Outside Diameter: 4.5 in (114 mm)
Top Style: Metal
Weight: 3.1 lb (1.4 kg)
Product Box Length: 9 in (229 mm)
Product Box Width: 9 in (229 mm)
Product Box Height: 9 in (229 mm)



Accessories
99-5050.jpg
99-5050 - Filter Care Service Kit - Squeeze
RC-4550.jpg
RC-4550 - Replacement Filter
RF-1023DK.jpg
RF-1023DK - Air Filter Wrap
RF-1023DL.JPG
RF-1023DL - Air Filter Wrap
RF-1023DR.jpg
RF-1023DR - Air Filter Wrap

Customer Feedback      Be the first to review part 57-0425

Dear K&N,

I own a 2002 Volkswagen Bora 1.9 TDi Sport 150 with 85,000 miles on the clock. It's a high miler as I use it pretty much every day for work and I need to travel about rather a lot. The car is pretty quick but had developed a flat spot around the 800 to 1800rpm spot. In an effort to fix it, I purchased one of your replacement air filters (P/N 33-2128). It arrived yesterday and despite the rain, I went out and fitted it straight away, removing the extremely grotty original filter plus general muck and leaves from the air box in the process. And, of course, went out for a test drive to see if it had worked.

So, did it fix the flat spot? Hell, yes! It also enormously improved throttle responsiveness and there was a very noticeable increase in power with much better acceleration. My Bora felt like the sporty diesel it should have been in the first place! I managed to scare myself silly by activating the traction control system in *4th* while accelerating out of a corner. Now, that has *never* happened before!

I definitely recommend fitting one of your filters and only wish I'd done it earlier. Now, how do I claim for soiled underwear ..? :)

Thanks K&N!

P.S. Why aren't your filters fitted as standard equipment?
James McGregor, Islay, UK
Awesome product! Easy to install, and absolutely delivers what it promises! It was the first modification I made to my 2003 Cobra. I took it for a drive immediately before and after installation and instantly noticed a seat of the pants improvement. This system later became the perfect compliment to an upgraded Whipple supercharger, Steeda exhaust, and x-pipe. Worth every penny!!!
Duane, California
Bought it for a 2013 Volkswagen Passat 2.5L 5cyl. Not only did it make my car sound SOOOO much better, but it increased the power significantly. Also, I drive a little hard and I use to get about 8-12 mpg in the Brooklyn city. Now my average is 16.5 after driving it really hard. This is the best thing I ever bought for my car, and it only cost me about $50. Definitely reccomend everyone to put this in their car, not only for the power and sound, but for the gas savings. This filter will pay itself off just in gas money. Definitely putting this in all my cars!!!
DippingNYC, Brooklyn, New York

K&N 57-0425 fits the following:
2003 AUDI S3 1.8L L4 F/I - 210/225BHP, 20v Street Legal In All US States: No TUV Approved (Europe): No
2003 AUDI A3 1.8L L4 F/I - 210/225BHP Street Legal In All US States: No TUV Approved (Europe): No
2002 AUDI S3 1.8L L4 F/I - 210/225BHP, 20v Street Legal In All US States: No TUV Approved (Europe): No
2002 AUDI A3 1.8L L4 F/I - 210/225BHP, w/Aux. Air Pump Street Legal In All US States: No TUV Approved (Europe): No
2001 AUDI S3 1.8L L4 F/I - 210/225BHP, 20v Street Legal In All US States: No TUV Approved (Europe): No
2001 AUDI A3 1.8L L4 F/I - 210/225BHP Street Legal In All US States: No TUV Approved (Europe): No
2000 VOLKSWAGEN GOLF IV 2.3L L5 F/I - 150BHP Street Legal In All US States: No TUV Approved (Europe): No
2000 VOLKSWAGEN BORA 2.3L V5 F/I - 150BHP Street Legal In All US States: No TUV Approved (Europe): No
2000 SEAT TOLEDO II 2.3L V5 F/I - 150BHP Street Legal In All US States: No TUV Approved (Europe): No
2000 AUDI S3 1.8L L4 F/I - 210/225BHP, 20v Street Legal In All US States: No TUV Approved (Europe): No
2000 AUDI A3 1.8L L4 F/I - 210/225BHP Street Legal In All US States: No TUV Approved (Europe): No
1999 VOLKSWAGEN GOLF IV 2.3L L5 F/I - All Street Legal In All US States: No TUV Approved (Europe): No
1999 VOLKSWAGEN BORA 2.3L V5 F/I - All Street Legal In All US States: No TUV Approved (Europe): No
1999 SEAT TOLEDO II 2.3L V5 F/I - 150BHP Street Legal In All US States: No TUV Approved (Europe): No
1999 AUDI S3 1.8L L4 F/I - 210/225BHP, 20v Street Legal In All US States: No TUV Approved (Europe): No
1999 AUDI A3 1.8L L4 F/I - 210/225BHP Street Legal In All US States: No TUV Approved (Europe): No
1998 VOLKSWAGEN GOLF IV 2.3L L5 F/I - All Street Legal In All US States: No TUV Approved (Europe): No
1998 VOLKSWAGEN BORA 2.3L V5 F/I - All Street Legal In All US States: No TUV Approved (Europe): No
1997 VOLKSWAGEN GOLF IV 2.3L L5 F/I - All Street Legal In All US States: No TUV Approved (Europe): No