Once an engine is checked it is security sealed to prevent modifications prior to a race. A variety of seals are available for this application in addition to the four shown below.
Security labels can be custom printed to include a QR code, barcode, unique serial number and more. QR codes have been used in some races to record car information including the time the engine was sealed.
Contact Harcor, the security specialists, for more information and assistance selecting a seal.