K&N has sold more than 20 million washable/reusable high flow
air filters over the last 36 years.

KN Air Filters are available for most Volvo cars and model years.

Are KN Air filters emissions legal?

All K&N direct replacement filters are emissions legal. They do not require any modifications and go directly in the stock air filter housing. Universal clamp-on filters may not be legal in states where under the hood modifications are not allowed. Since they can be used on just about anything, it would be impossible to have all the different filters tested for all possible applications. Check your local laws if you are unsure.

What increase in horsepower should I see from a KN Air filter?

K&H performs internal dyno (power curve) testing on all their product designs. Their replacement filters are designed to provide up to 4 horsepower. Your results will vary depending on your vehicle, driving habits, load on the engine (towing for example), existing air system restriction, and other factors.