SU-4000 Image

Replacement Filters > Replacement Air Filter

 List Price: $71.03
Your Price: $55.99

You Save 21.2%

Find a Local Dealer


In Stock & Ready to Ship!
 Free Ground Shipping!

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-4000 Cross Reference
Installation Instruction Sheet
SU-4000 Vehicle Applications

Part SU-4000 Product Specifications
Product Style: Tapered Conical Air Filter
Air Filter Shape: Tapered Conical
Filter Material: Cotton Gauze
Base Outside Diameter: 6.313 in (160 mm)
Height: 3 in (76 mm)
Inner Wire: No
Top Outside Diameter: 5.438 in (138 mm)
Top Style: Rubber
Top Material/Finish: None
Flanges: None
Package Contents: 1 Air Filter, 1 K&N 1oz Sealing Grease
Package Quantity: 1
Filter Re-Oiling Amount: 0.64 oz (19 ml)
Weight: 1.1 lb (0.5 kg)
Product Box Length: 8.5 in (216 mm)
Product Box Width: 3.63 in (92 mm)
Product Box Height: 8.63 in (219 mm)

99-5050 - Filter Care Service Kit - Squeeze
SU-4000PK - Air Filter Wrap

Customer Feedback      Be the first to review part SU-4000

I put K&N filters in my motorcycles, SUZUKI , DRZ400 2000, Cagiva Navigator 1000cc, and Honda MINITRAI, 1968, AND GOT EXTRA POWER, IMMEDIATLY, I'M VERY HAPPY !!!
Alfonzo Perez, Caracas, Venezuela
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

K&N SU-4000 fits the following:
2013 SUZUKI DRZ400SM 398 - All
2013 SUZUKI DRZ400S 398 - All
2012 SUZUKI DRZ400S 398 - All
2011 SUZUKI DRZ400S 400 - All
2010 SUZUKI DRZ400SM 400 - All
2010 SUZUKI DRZ400S 400 - All
2009 SUZUKI DRZ400SM 400 - All
2009 SUZUKI DRZ400S 400 - All
2008 SUZUKI DRZ400SM 400 - All
2008 SUZUKI DRZ400S 400 - All
2008 SUZUKI DRZ400E 400 - All
2007 SUZUKI DRZ400SM 400 - All
2007 SUZUKI DRZ400S 400 - All
2007 SUZUKI DRZ400E 400 - All
2006 SUZUKI DRZ400SM 400 - All
2006 SUZUKI DRZ400S 400 - All
2006 SUZUKI DRZ400E 400 - All
2005 SUZUKI DRZ400SM 400 - All
2005 SUZUKI DRZ400S 400 - All
2005 SUZUKI DRZ400E 400 - All
2004 SUZUKI DRZ400S 400 - All
2004 SUZUKI DRZ400E 400 - All
2004 SUZUKI DRZ400 400 - All
2003 SUZUKI DRZ400S 400 - All
2003 SUZUKI DRZ400E 400 - All
2003 SUZUKI DRZ400 400 - All
2003 KAWASAKI KLX400SR 400 - All
2003 KAWASAKI KLX400R 400 - All
2002 SUZUKI DRZ400S 400 - All
2002 SUZUKI DRZ400E 400 - All
2002 SUZUKI DRZ400 400 - All
2001 SUZUKI DRZ400S 400 - All
2001 SUZUKI DRZ400E 400 - All
2001 SUZUKI DRZ400 400 - All
2000 SUZUKI DRZ400S 400 - All
2000 SUZUKI DRZ400E 400 - All
2000 SUZUKI DRZ400 400 - All