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Chrysler date codes and how to identify them

Car manufactures have used several methods to Date Code various parts used in vehicles.

Wheel-type date code

The Wheel-Type Code has the last two numbers of the year in the center of 12 slashes arranged around it.

Box-type code

The Box-Type Code has two numerals. These two numerals represent the last two digits of the year. EXAMPLE (1968 would be 68) followed by 12 boxes cast into the part. The number of these boxes marked , indicates the month.

An EXAMPLE would be if 3 of these "boxes" are marked it would tell you its March.

10,000-day calendar

July 29,1961 was when the 10,000 day calendar began. It started at ooo1.

To use the chart below, find the DATE CODE on the part in question; find where the CODE falls on the chart. Subtract the CODE on your part from the closest number that is less than your CODE and add this number to the closest lower number on the chart.

Below is a chart of 10,000 day calender Chart

 DATE CODE NOTES
7-29-1961
 0001 "Day 1"
 1-1-1962 0157 
 1-1-1963 0522 
 1-1-1964 0887 Leap Year, 29 days in Feb
 1-1-1965 1253 
 1-1-1966 1618 
 1-1-1967 1983 
 1-1-1968 2348 Leap Year, 29 days in Feb
 1-1-1969 2714 
 1-1-1970 3079 
 1-1-1971 3444 
 1-1-1972 3809 Leap Year, 29 days in Feb
 1-1-1973 4175 
 1-1-1974 4540 
 1-1-1975 4905 
 1-1-1976 5270 Leap Year, 29 days in Feb
 1-1-1977 5636 
 1-1-1978 6001 
 1-1-1979 6366 
 1-1-1980 6732 Leap Year, 29 days in Feb
 1-1-1981 7097 
 1-1-1982 7462 
 1-1-1983 7827 
 1-1-1984 8193 Leap Year, 29 days in Feb
 1-1-1985 8558 
 1-1-1986 8923 
 1-1-1987 9288 
 1-1-1988 9654 Leap Year, 29 days in Feb
 12-13-1988 9999 End