I couldn't find that number in the parts book. It may be the part number for the individual part rather than the assembly part number.

The parts book states:
Right and left part numbers are on same line, first number is right, second number is left.

This statement only occurs in the part number section of Section 23 - Body. I don't know if this holds true for the other sections. I have found part numbers in other sections that have an odd number before an even number.