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Replacement Filters > Replacement Air Filter

 List Price: $87.46
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K&N off-road replacement air filters are ideal for extended use in dirty and dusty off-road riding and provide clean carburetion even at high altitude. Generally, no jet changes are required with just a K&N filter element. K&N replacement air filters are washable and reusable and provide high air-flow with excellent filtration.
Available Information
SU-4002 Cross Reference
Installation Instruction Sheet
SU-4002 Vehicle Applications

Part SU-4002 Product Specifications
Product Style: Tapered Conical Air Filter
Air Filter Shape: Tapered Conical
Filter Material: Cotton Gauze
Base Inside Diameter: 2.875 in (73 mm)
Base Outside Diameter: 4.5 in (114 mm)
Height: 5.375 in (137 mm)
Inner Wire: No
Top Outside Diameter: 3.5 in (89 mm)
Top Style: Metal
Top Material/Finish: Black Oxide
Flanges: None
Package Contents: 1 Air Filter, 1 K&N 1oz Sealing Grease
Package Quantity: 1
Filter Re-Oiling Amount: 0.74 oz (22 ml)
Weight: 1.1 lb (0.5 kg)
Product Box Length: 5.63 in (143 mm)
Product Box Width: 4.63 in (117 mm)
Product Box Height: 9.25 in (235 mm)

99-5050 - Filter Care Service Kit - Squeeze
SU-4002PK - Air Filter Wrap

Customer Feedback      Be the first to review part SU-4002

Filters were back ordered upon order. No problem though as the other filter was delivered within 6 days. A few days later another order arrives with 1 of the SN-2530 filters and 3 days later the second filter arrives. By the way filters are being used to fabricate a breather system for a 650 Kawasaki dirt tracker.
Gary McNary, Clearwater, Florida
I installed my first K&N filter in 1975 while I was the manager at Small Car Accessories, a high performance VW shop in Sunnyvale CA. At the time I ran these filters on both of my Corvair powered VW's, a '58 Single Cab pickup, which I still drive, and a '71 bug. They worked really well on the street, giving me an extra mile or two per gallon with pretty much 'filter-less' performance, and worked especially well in the shop's sand rail. Other filters would pack it in when running the dunes at Pismo and until the K&N's came along, you carried a couple of extra filters. The K&N's not only kept the sand out, but did well when packed with sand. A quick stop and a quick tap or two and they were ready to go again. Because they flowed air so well and were so easy to clean. We sold a lot of them to our off-roading customers, and they loved them. At the time, RURA racers ran their buggies and Bajas at a track near the old Fremont Drag Strip where they used them for their performance value and reusability. These days I run a K&N filter in my '99 Ranger, where I picked up just over 1 mpg with just the filter change. I still use a K&N in my old Single Cab, which since 1981 has sported a 351 Ford Windsor engine and Ford drive train (over 60,000 miles). My '82 Yamaha 650 Seca still has the K&N air filter I installed at the first filter change over 52,000 miles back. There is also a K&N on my Café style Iron Head Sporty (48,000 miles), my wife's modified 750 Virago (two pod style filters), my '05 Triumph Tiger (added three HP on the dyno) and the '97 GS500 Suzuki I recently saved from the back of a neighbor's yard. I'm taking the time to write this because the K&N filter is a product which is truly as excellent as the manufacture claims. Besides the maximum star rating I also give K&N filter a 'two thumbs up.'
Kim Crumb, Forestville, California
Lisa Kubo was awesome! She answered my questions thoroughly and got me what I needed in record time. Totally satisfied with my new air intake filter for my Suzuki GSX-R1000. Thank you K&N!
Pete, Yucca Valley, California

K&N SU-4002 fits the following:
2013 SUZUKI LTZ400 QUADSPORT Z 398 - All
2012 SUZUKI LTZ400 QUADSPORT Z 398 - All
2009 SUZUKI LTZ400 QUADSPORT Z 398 - All
2008 SUZUKI LTZ400 QUADSPORT Z 398 - All
2008 ARCTIC CAT DVX400 400 - All
2007 SUZUKI LTZ400 QUADSPORT Z 398 - All
2007 ARCTIC CAT DVX400 TS 400 - All
2007 ARCTIC CAT DVX400 400 - All
2006 SUZUKI LTZ400 QUADSPORT Z 398 - All
2006 KAWASAKI KFX400 400 - All
2006 ARCTIC CAT DVX400 TS 400 - All
2006 ARCTIC CAT DVX400 400 - All
2005 SUZUKI LTZ400 QUADSPORT Z 398 - All
2005 KAWASAKI KFX400 400 - All
2005 ARCTIC CAT DVX400 400 - All
2004 SUZUKI LTZ400 QUADSPORT Z 398 - All
2004 KAWASAKI KFX400 400 - All
2004 ARCTIC CAT DVX400 400 - All
2003 SUZUKI LTZ400 QUADSPORT Z 398 - All
2003 KAWASAKI KFX400 400 - All