Alternator, 120 amps

Years 2012–13, 2016 Models 1 Factory citations 1

Also documented for Cadillac Chevrolet GMC Pontiac

Documented applications

Regal — Epsilon II, 5th gen (2011–2017)

2013, 2016 Factory-verified

2013 from GM's 2014 list, which lists it as deleted for 2014; 2016: 1SV: S; GM gives K09 and KY2 the same wording

GM factory document — 2016 buick regal order guide copy gm authority, p.5, p.23.
2012 Single-source

no longer available on the 4GR69 models for 2013 (GM Authority 2013 changes); single-source: GM Authority 2013 changes does not credit GM

This page aggregates every documented appearance of K09 in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.