Vehicle Warranty

Contrary to what you may have heard or read, a K&N Filtercharger will not void your vehicle warranty. The Magnuson-Moss Warranty Act passed in 1982 makes it illegal for a manufacturer to void a new vehicle warranty if the consumer uses non-OEM filters unless that manufacturer provides filters free of charge. If the manufacturer does not provide air filters free of charge, they cannot void the vehicle's warranty simply because you have installed an aftermarket air filter.


APT offers over 1000 K&N stock replacement applications, hundreds of universal clamp-on filters and dozens of Filtercharger Injection Performance Kits. Our goal is to provide the highest quality component at a competitive price. A K&N Filtercharger will be the last filter you will ever buy for your car, truck, motorhome, motorcycle, ATV, boat or jet ski - Guaranteed.

Warranties on New Vehicles

THE MYTH: A manufacturer's new-vehicle warranty is automatically voided once an aftermarket part (non-original equipment) is installed.

THE TRUTH: Rarely does the use of aftermarket parts violate a new-vehicle warranty.

THE RULES: Federal law, (the Clean Air Act), requires two emissions warranties: a "defect" warranty and a "performance" warranty.

"Defect" warranties require the vehicle manufacturer to produce a vehicle which, at time of sale, is free of defects that prevent it from meeting required emission levels for it's useful life, as defined in the law.

"Performance" warranties require that vehicle manufacturer to make repairs - at no cost to the owner - should the vehicle fail to meet certain levels of emissions performance during the warranty period. This period ranges from 2 years or 24,000 miles to 5 years or 50,000 miles for most parts, to 8 years or 80,000 miles for certain emission-controlled parts (specifically, the catalytic converter, the electronics emission-control unit and the on-board diagnostic device) on most 1995 and later vehicles (check owner's manual for specifics on your vehicle).

Consumers are protected under a parts self-certification program administered by the Environmental Protection Agency (EPA).

If a parts maker self-certifies it's parts under this program, the vehicle manufacturer cannot void the emissions warranty even if the certified part fails and/or is directly responsible for the emissions warranty claim. In this situation, the vehicle manufacturer must arrange a settlement with the parts manufacturer, but the new vehicle warranty is not voided under the law.

If a parts maker chooses not to self-certify it's parts, the only case where a vehicle manufacturer can void the emissions warranty is if a non-certified aftermarket part is proven to be responsible for an emissions claim.

All K&N direct replacement air filters AND all K&N F.I.P.K. kits - - Filtercharger Injection Performance Kits - - are emission control exempt and they will not void your new car warranty.

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