K&N Engineering is the world's leading manufacturer of washable performance air filters and air intake systems. K&N invented the reusable high flow cotton air filter in 1969. Take a virtual tour through our Riverside, California facility and see some of what it takes to make the World's Best Air Filter. To get started select one of the starting point images below then use your mouse to browse around in 3D. Look for the white arrows to move around the facility.
When entering the building through the main lobby, you will find friendly staff who are ready to help you with whatever you may need.
View K&N Main Lobby
K&N's automotive and motorcycle horsepower and torque testing is performed on wheel-based dynamometers, which measure actual brake horsepower and torque at the wheel(s) receiving power from the drive train. K&N's Riverside facility has automotive dynamometers, motorcycle/ATV dynamometers and an oversize vehicle 2-wheel-drive chassis dynamometer.
View K&N Automotive and Motorcycle Dyno Area
The K&N race shop is used to support K&N and K&N partner race vehicles. Custom filter applications are also manufactured for leading race teams in all forms of motorsports.
View K&N Race Shop
K&N builds over 3 million air filters annually using a variety of materials and production equipment depending upon the design requirements of each individual filter.
View K&N Air Filter Manufacturing Floor
K&N designs and builds much of the tooling and machinery used to manufacture their air filters. K&N's automated warehousing system enables efficient delivery of materials required for manufacturing and packaging K&N products.
View K&N Air Filter Manufacturing from Above
We maintain an enormous inventory of products. The automated warehousing and shipping system works in conjunction with our business management system to enable outstanding fill rates and short lead times.
View K&N Shipping Department
K&N feels it is important to be a leader in scientific testing of air filtration products in order to provide consumers with the best products available. Select a K&N laboratory virtual tour below to see the different types of testing performed at our Riverside facilities.
The K&N engine dyno room houses our SuperFlow 902 dyno. The facility is used for testing air filter products on engines for R&D product development and race team support.
View K&N Engine Dyno Testing Laboratory
K&N operates an in-house filtration test laboratory with two different testing machines built in consultation with Southwest Research Institute, one of the pre-eminent testing companies in the world. We perform tests of air filters both in the factory air box and in SAE/ISO recommended test housing fixtures. Our goal is to design air filters with the maximum possible airflow achievable while providing outstanding engine protection.
View K&N Air Filter Efficiency Laboratory
K&N Engineering performs airflow testing on a SuperFlow Corporation SF-1020 flow bench capable of measuring airflow rates up to 1020 cubic feet per minute (cfm) at test pressures of up to 65 inches of water. K&N uses this equipment to measure the restriction created by air filter and air intake designs.
View K&N Air Flow Laboratory
The K&N Chemical Laboratory houses a variety of equipment for R&D testing and analysis of various media, oils, and cleaners.
View K&N Chemical Laboratory
K&N design engineers use a vibration test stand to put extreme stress on air filters, air filter assemblies, and air intake parts. The vibration stand is designed for vertical, horizontal and lateral testing and helps determine product durability in simulated driving conditions.
View K&N Vibration Testing Laboratory