Covering, floor mat, front and rear, auxiliary, deluxe

Years 2005–07, 2016–19, 2025–27 Models 3 Factory citations 10

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Also described as Floor mats, premium carpeted, front and rearFloor mats, carpeted, front with ST logo and rear

Also documented for Chevrolet Pontiac Saturn

Documented applications

Cascada — Delta II (2016–2019)

2016–2019 Factory-verified

all trims: S

GM factory document — 2016 buick cascada order guide copy gm authority, p.1, p.5.
GM factory document — 2017 buick cascada order guide copy gm authority, p.2, p.11.
GM factory document — 2018 buick cascada order guide copy gm authority, p.1, p.10.
GM factory document — 2019 buick cascada order guide copy gm authority, p.1, p.10.

Envision — E2XX (2021–2027)

2025–2027 Factory-verified

2027: Sport Touring: 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.2.

Terraza — U-body / GMT201 (2005–2007)

2005–2007 Factory-verified

GM factory document — 2005 buick terraza rpo code list, p.1.
GM factory document — 2006 buick terraza rpo code list, p.1.
GM factory document — 2007 buick terraza rpo code list, p.1.

This page aggregates every documented appearance of B50 in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.