Case Half Components GMC Sierra II

Case Half Components

MP3023 LD ATC (with either 27T and 32T input shaft splines)

1. The rear output shaft seal (20) is smaller than the MP 3024 ATC. The inner lip diameter measures 46.1 mm (1.815 in).
2. The rear output shaft bushing (19) is smaller than the MP 3024 ATC. The inner diameter measures 48 mm (1.890 in).
3. The rear case half (15) has smaller bores than the MP 3024 ATC in order to accommodate the smaller rear output shaft seal and the rear output shaft bushing.
4. There is an additional external wire harness bracket for the 32T application.

MP3024 HD ATC

1. The rear output shaft seal (20) is larger than the MP 3023 ATC. The inner lip diameter measures 53.8 mm (2.118 in).
2. The rear output shaft bushing (19) is larger than the MP 3023 ATC. The inner diameter measures 56.08 mm (2.208 in).
3. The rear case half (15) has larger bores than the MP 3023 ATC in order to accommodate the larger rear output shaft seal and the rear output shaft bushing.

ALL

1. Double lip input shaft oil seals (3) are used on applications with a WET adapter cavity and with 4 speed transmission RPOs M30/M70/MW7/M99/ML9.
2. Single lip input shaft oil seals (3) are used on applications with a DRY adapter cavity and with 6 speed transmission RPOs MYC/MYD.