Interior trim, Ebony seats with Ebony interior accents, cloth

Years 2019 Models 1

Documented applications

Regal — E2XX (2018–2020)

2019 Confirmed

only in: Preferred (1SB); the table row covers Regal and Preferred, but footnote 1 on HBX1 says not available on 1SV, so the 1 reads as a footnote mark; seat A51 front bucket; 2019 (2019 Sportback order guide, p.32; no [FD] because the guide prints the code only with the attached footnote digit)

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