My fuel pump appears to be leaking where it is crimped together. In looking up the options here at Pelican, I am greeted with an " early or late " option depending upon the number of the chassis number.

Where do I find this chassis number or is it important..? (I can not see any difference between the two pictures)

Thanks,
Jase

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'83 240D
'85 300D
'86 300SDL
'88 300E