- Where parts used are of matching quality as the component used for the assembly of a motor vehicle. (A Capristo or SECA exhaust is manufactured from a higher quality material than OEM exhausts: grade T304 / T309 stainless steel, and is manufactured using internationally-certified practices. Spare parts of "matching quality" identifies parts in the following way: spare parts made by any undertaking which can certify at any moment that the parts in question match the quality of the components which are or were used for the assembly of the motor vehicles in question).
- Where parts used are of the same specifications and production standards as those used by the Vehicle Assemblers. (A Capristo or SECA exhaust is designed to fit to OE mounting parts and components such as catalysts without any modifications (including cutting, welding and bending of any OE parts). Its fitting is a simple bolt-on bolt-off process which can be reversed or replaced at any time without causing damage to the vehicle or OE components).
- Where parts manufacturers / suppliers are able to issue a quality certificate. (Capristo and SECA exhausts are certified compliant by the strict guidelines set out by EU-recognised TÜV and internationally-recognised ISO 9001. Very few aftermarket exhaust manufacturers have such certifications.)
An interesting point is that if the vehicle manufacturer itself offers spare parts of differing quality (e.g. an "economy" or "premium line"), he/she cannot prohibit its contractual partners (i.e. dealers and authorised repairers) from buying spare parts of the same quality from the independent market. The BER also covers service and maintenance during the warranty period and prohibits vehicle manufacturers' warranties from including conditions requiring that all parts used must be the VA's "original spare parts". THE EUROPEAN COMMISSION DECLARED THAT SUCH CLAUSES IN A WARRANTY DOCUMENT WOULD REPRESENT 'AN UNJUSTIFIED RESTRICTION FOR THE CONSUMER.