The Legos were seized and four people in Los Angeles and Orange counties were arrested, according to the CHP.
The suspects were involved in stealing the Legos from stores like Target, Home Depot and Lowe's and selling them to fences - people or groups who purchase stolen products and then sell them to the public, often through businesses that seem legitimate like swap meets or on websites, according to CHP investigators.
The suspects were identified as Jeremy Johnson, 44, of Orange, Marta Hardt, 39, of Huntington Beach, Chung-Pei Yu, 47, of Studio City, and Shen Li, 35, of Brea.
They were booked on theft and conspiracy charges.
The bust was made by CHP officers who are part of a retail crime task force which has been cracking down on a surge in thefts from stores.