Legacy variant · S12A2
S12A2-MPTA
This exact configuration isn't sold new in Australia — Australian rules require new marine engines to meet IMO Tier II emissions requirements, and the S12A2-MPTA doesn't carry a Tier II rating. If you're running one, OPS still stocks genuine parts for it and can supply the current Australian Tier II S12A2 equivalent below.
S12A2-MPTA — as supplied
Auxiliary Genset679–761 kW1500–1800 rpm
Australian Tier II equivalent
The S12A2 is still in our current range. The Tier II variants we sell new in Australia today are:
- S12A2-T2MPTK
- S12A2-T2MPTAW2
Just need parts for the S12A2-MPTA itself? Start a parts enquiry →

