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K&N SU-1598 Air Filter

Replacement Filters > Replacement Air Filter
Rating Star 1 Rating Star 2 Rating Star 3 Rating Star 4 Rating Star 5   4.7 out of 5 stars   6 Customer Reviews
  • Designed to provide increased horsepower and torque
  • Pleated media provides a large filtration area offering long service intervals
  • Multiple layers of woven cotton gauze media offers excellent filtration
  • Application specific base seal and sealing bead
  • Made in the USA for over 40 years
  • Washable & reusable, pre-oiled and ready to ride!
  • Million-Mile Limited Warranty
The K&N SU-1598 Air Filter fits some Suzuki Boulevard C90, Suzuki Boulevard C90 Black, Suzuki Boulevard C90T, and Suzuki VL1500LC Intruder models. See vehicle applications link for details.
K&N's high-flow air filters are available as a replacement for your stock motorcycle air filter element. They are custom engineered to fit your specific application and are designed to provide low restriction and increased performance, while providing excellent engine protection for your motorcycle.

[More Information on K&N Replacement Air Filters]

Product Specifications

Air Filter ShapeUnique
Filter MaterialCotton Gauze
Height4.375 in (111 mm)
Package Contents1 Air Filter
Package Quantity1
Product StyleUnique Air Filters
Weight1 lb (0.5 kg)
Filter Re-Oiling Amount0.84 oz (25 ml)
Product Box Height7.13 in (181 mm)
Product Box Length7.06 in (179 mm)
Product Box Width7.06 in (179 mm)

K&N SU-1598 Air Filter Product Reviews

Monday, October 23, 2017 - Part SU-1598
Very good service. The Filter was a bit damaged when I recieved it. And 3 days later I had a new one at my address.

Jakob Gislund
Hjoerring, Denmark
Tuesday, July 4, 2017 - Part SU-1598
I wish it had a few more air vents or a bigger center. I had to put holes in it. My bike was running rich. More ventilation helped make it run leaner and better. I had the carbs re-jetted and the stock filter was definitely not able to let it breathe enough. I am hoping that the extra air will solve the problem. I am always pleased with K&N oil filters for my motorcycle and have used your air filters in the past with little or no issues. Thank You for the chance to give my feed back.

Michael Donnelly
Binghamton, New York
Tuesday, August 9, 2016 - Part SU-1598
Working great.

Jeffery Pflanzer
Yorkton, Canada
Wednesday, March 23, 2016 - Part SU-1598
I didn't ride the bike before I installed the K&N filter, but when I do ride it now, I can sure hear the air being sucked in. If I can hear it then it must be working. Install was simple and easy. Thanks K&N for such a great product.

Anthony Ryan
Southaven, Mississippi
Friday, September 4, 2015 - Part SU-1598
Excellent on-line experience, fast shipping, great product. I have three motorcycles and use K&N air and oil filters in all three. I love the welded on nut, it makes changing the filter a breeze.

Steve Tyler
Brooksville, Florida
Friday, July 10, 2015 - Part SU-1598
Quick and easy,and I saved $18 from ordering direct instead of going through a shipping,no brainer. I'll be back.

Mishawaka, Indiana