A51 Factory-verified

Buick · Regular Production Option

Seats, front bucket, with seatback map pockets

Years 2000–03, 2006–09, 2015–19, 2025–27 Models 7 Factory citations 15

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Also described as Seats, front bucketSeat, front, bucket, driver and passenger (includes D07, WO2)Seat, front, bucket, custom

Also documented for Cadillac Chevrolet Oldsmobile Pontiac Saturn

Documented applications

Envision — E2XX (2021–2027)

2025–2027 Factory-verified

2027: all trims: S

GM factory document — 2025 buick envision fleet order guide rpo codes, p.1.
GM factory document — 2027 buick envision fleet order guide rpo codes, p.1.
GM factory document — 2027 buick envision fleet order guide, p.4.

LaCrosse — E2XX, 3rd gen (2017–2019)

2017–2019 Factory-verified

2019: all trims: S

GM factory document — 2017 buick lacrosse fleet order guide wayback, p.1, p.2.
GM factory document — 2018 buick lacrosse order guide copy gm authority, p.3.
GM factory document — 2019 buick lacrosse order guide copy gm authority, p.4.

LaCrosse — Epsilon II, 2nd gen (2010–2016)

2015 Factory-verified

2015: all groups: S

GM factory document — 2015 buick lacrosse fleet order guide wayback, p.1, p.2.

LeSabre — H-body (2000–2005)

2000–2003 Factory-verified

The lists print DO7 (letter O) in the includes text; the code is D07.

GM factory document — 2000 buick lesabre rpo code list, p.1.
GM factory document — 2003 buick lesabre rpo code list, p.1.

Lucerne — G-body (2006–2011)

2006–2009 Factory-verified

GM factory document — 2006 buick lucerne rpo code list, p.1.
GM factory document — 2009 buick lucerne rpo code list, p.1.

Regal — E2XX (2018–2020)

2018–2019 Factory-verified

2019: Regal, Preferred, Preferred II, Essence, Avenir: S (2019 Sportback order guide)

GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
GM factory document — 2019 buick regal sportback order guide copy gm authority, p.4.

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

2016 Factory-verified

2016: 1SV, 1SL, 1SN: S; 1SP: in the group

GM factory document — 2016 buick regal order guide copy gm authority, p.3, p.18.

This page aggregates every documented appearance of A51 in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.