Secrets of ORGA

This number shows the day when your BX was actually assembled on the production line. The dealers and parts stores use this number (often called ORGA or RP number, this latter stands for Replacement Parts) to identify the various parts and components fitted to your car. You'll find this number either in the engine bay, in front of the left front suspension sphere or on the A-pillar, in the door opening, below the hinge.

Calculating the production date is very easy using the following table. Locate the largest number in the table still less than or equal to your organization number. To see an example, let's assume the number is 3514. Then the largest number will be 3491 in the cell June 1986. Just subtract this number from your organization number to get the day of the month of the production of your BX (in our example, 3514-3491=23 yields June 23, 1986).

If you receive the non-existent date zero (this happens when your organization number is not greater than but equal to the number in the table), simply take the last day of the previous month (eg. organization number 5013, largest number in the table is 5013 in the cell August 1990, subtraction results in zero, hence the production date is July 31, 1990.)

Or, alternatively, use any spreadsheet, database or similar program that allows arithmetic operations carried out on dates. Add your organization number to the date November 8, 1976 and the resulting date is the production date of your car.