Found some info
Gear box models APA,CBU,ANZ,CEA use dipstick with the letter C ,tube 097321405B for these gear box no’s.
Models AEM the letter A and later succeeded by the letter E.
The AEM box , 097321405F tube used in conjunction with the these other options:
097321406B,097321431E,003321419B.
www.oemepc.com