Acura ILX Battery Sizes by Year
Engine-specific battery groups by model year.
| Year | Engine / groups |
|---|---|
| 2022 | K25V7: 51R-2 |
| 2021 | K25V7: 51R-2 |
| 2020 | K25V7: 51R-2 |
| 2019 | K25V7: 51R-2 |
| 2018 | K25V7: 51R-2 |
| 2017 | K25V7: 51R-2 |
| 2016 | K25V7: 51R-2 |
| 2015 | K24Z7: 51R-2 R20A5: 51R-2 |
| 2014 | K24Z7: 51R-2 R20A1: 51R-2 R20A5: 51R-2 |
| 2013 | K24Z7: 51R-2 R20A1: 51R-2 R20A5: 51R-2 |