N.J. Stat. Ann. § 2A:18-27

A writ of execution issued out of the Superior Court, Law Division, Special Civil Part shall remain valid and effective for the purpose of a levy, and shall be operative and effective against any goods and chattels levied upon, for two years from the date of its issuance, unless sooner satisfied. Thereafter it shall be void. The officer shall make a return to the clerk of the proceedings had by him on such writ forthwith after a satisfaction thereof, otherwise within two years.