New Jersey Statutes Title 39. Motor Vehicles and Traffic Regulation 39 § 10B-4

a. It shall be unlawful for a person to sell or offer for sale or transport a major motor vehicle component part or motor vehicle if a manufacturer's part number, an identification number required by section 2 of this act,  1 or a number assigned by the division under section 3 of this act  2 shall have been destroyed, removed, altered, defaced or so covered as to be concealed.

b. It shall be unlawful for a person to sell or offer for sale a component part from a motor vehicle less than three years old without providing the purchaser with an invoice indicating:

c. It shall be unlawful for a person to purchase a major motor vehicle component part from a motor vehicle less than three years old without obtaining from the seller the invoice defined in subsection b. of this section.

d. It shall be unlawful for a person to transport a major motor vehicle component part unless that component part has been marked with an identification number as required by section 2 of this act or an identification number assigned by the division under subsection e. of section 3 of this act and the transporter has in his possession an invoice indicating:

e. A person selling, offering to sell, transporting or purchasing a major motor vehicle component part or a motor vehicle in violation of the provisions of subsections a., b., c., or d. of this section is guilty of a crime of the fourth degree. A person who willfully removes, defaces, covers, alters or destroys a manufacturer's part number, an identification number required by section 2 of this act, or a number assigned by the division under section 3 of this act, is guilty of a crime of the third degree.

A person having possession of a major motor vehicle component part or a motor vehicle of which a manufacturer's part number, an identification number required by section 2 of this act, or a number assigned by the division under section 3 of this act, has been destroyed, removed, altered, defaced or so covered as to be concealed is guilty of a crime of the fourth degree. Upon prosecution under this section lack of knowledge of the condition of the number of the vehicle or part shall constitute a defense; but possession shall be prima facie evidence that the defendant had knowledge of the condition, and the burden of proof shall be upon him that he had no knowledge.