Many insurance companies will insist on the use of aftermarket parts for repairs. This is a cheaper option for them but means your vehicle may lose the warranties and value it had prior to your accident, not to mention the uncertainty of whether it will perform the same way if you’re involved in another accident.
OEM (Original Equipment Manufacturer) parts have the same specifications and will match the fit, finish and performance of the original parts. This preserves the warranties and ensures there is no decrease in the value due to repairs from the accident. Above all, the perfect fit of the replacement part will ensure the safety system of your vehicle works as it was designed.