Only items manufactured by PSC and intended for daily on-road use are eligible under this 12-Month Limited Warranty. All other parts will be deemed non-eligible under this 12-Month Limited Warranty and will only be guaranteed to work upon installation. If a part installed on an off-road, non-street legal, or competition vehicle is determined to be non-functional upon installation, contact must be made with PSC no more than 30 days from date of purchase for consideration of repair or replacement.