The Buick Roadmaster battery sizes are: 78 (model years 1995 to 1996), 34/78 (model years 1993 to 1994), or 75/86 (model years 1991 to 1994) as specified in our data below, organized by trim, option package, and model year.
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Buick Roadmaster Battery Size(s)
Year |
Trim |
Battery Size Code |
Battery Size (L X W X H) Inches |
Get Here (paid link) |
1996 |
V8/5.7L |
78 |
10 1/4" x 7 1/16" x 7 11/16" |
Amazon |
1995 |
V8/5.7L |
78 |
10 1/4" x 7 1/16" x 7 11/16" |
Amazon |
1994 |
Wagon |
34/78 |
10 1/4" x 6 13/16" x 7 7/8" |
Amazon |
1994 |
Standard |
75/86 |
9 1/2" x 7 1/4" x 8 3/8" |
Amazon |
1993 |
Wagon |
34/78 |
10 1/4" x 6 13/16" x 7 7/8" |
Amazon |
1993 |
Standard |
75/86 |
9 1/2" x 7 1/4" x 8 3/8" |
Amazon |
1992 |
Standard |
75/86 |
9 1/2" x 7 1/4" x 8 3/8" |
Amazon |
1991 |
Standard |
75/86 |
9 1/2" x 7 1/4" x 8 3/8" |
Amazon |
(1) The Battery Council International (BCI) uses battery group codes consisting of letters and numbers (ie. H6, T4, 24, 34r). These refer to the battery size that will best fit (physical dimensions, terminal locations and type) a specific vehicle.
Check out the Battery Size specifications for other makes and models.
1996 Buick Roadmaster Battery Size
The recommended 1996 Buick Roadmaster battery size is 78 (Height: 10 1/4" x Width: 7 1/16" x Length: 7 11/16").
1996 Buick Roadmaster Battery Size(s)
Trim |
Battery Size Code |
Battery Size (L X W X H) (Imp.) |
Battery Size (L X W X H) (Metric) |
V8/5.7L |
78 |
10 1/4" x 7 1/16" x 7 11/16" |
26.0 cm x 17.9 cm x 19.6 cm |
1995 Buick Roadmaster Battery Size
The recommended 1995 Buick Roadmaster battery size is 78 (Height: 10 1/4" x Width: 7 1/16" x Length: 7 11/16").
1995 Buick Roadmaster Battery Size(s)
Trim |
Battery Size Code |
Battery Size (L X W X H) (Imp.) |
Battery Size (L X W X H) (Metric) |
V8/5.7L |
78 |
10 1/4" x 7 1/16" x 7 11/16" |
26.0 cm x 17.9 cm x 19.6 cm |
1994 Buick Roadmaster Battery Size
The recommended 1994 Buick Roadmaster battery sizes are 34/78 (Height: 10 1/4" x Width: 6 13/16" x Length: 7 7/8") or 75/86 (Height: 9 1/2" x Width: 7 1/4" x Length: 8 3/8").
1994 Buick Roadmaster Battery Size(s)
Trim |
Battery Size Code |
Battery Size (L X W X H) (Imp.) |
Battery Size (L X W X H) (Metric) |
Wagon |
34/78 |
10 1/4" x 6 13/16" x 7 7/8" |
26.0 cm x 17.3 cm x 20.0 cm |
Standard |
75/86 |
9 1/2" x 7 1/4" x 8 3/8" |
24.0 cm x 18.0 cm x 20.1 cm |
1993 Buick Roadmaster Battery Size
The recommended 1993 Buick Roadmaster battery sizes are 34/78 (Height: 10 1/4" x Width: 6 13/16" x Length: 7 7/8") or 75/86 (Height: 9 1/2" x Width: 7 1/4" x Length: 8 3/8").
1993 Buick Roadmaster Battery Size(s)
Trim |
Battery Size Code |
Battery Size (L X W X H) (Imp.) |
Battery Size (L X W X H) (Metric) |
Wagon |
34/78 |
10 1/4" x 6 13/16" x 7 7/8" |
26.0 cm x 17.3 cm x 20.0 cm |
Standard |
75/86 |
9 1/2" x 7 1/4" x 8 3/8" |
24.0 cm x 18.0 cm x 20.1 cm |
1992 Buick Roadmaster Battery Size
The recommended 1992 Buick Roadmaster battery size is 75/86 (Height: 9 1/2" x Width: 7 1/4" x Length: 8 3/8").
1992 Buick Roadmaster Battery Size(s)
Trim |
Battery Size Code |
Battery Size (L X W X H) (Imp.) |
Battery Size (L X W X H) (Metric) |
Standard |
75/86 |
9 1/2" x 7 1/4" x 8 3/8" |
24.0 cm x 18.0 cm x 20.1 cm |
1991 Buick Roadmaster Battery Size
The recommended 1991 Buick Roadmaster battery size is 75/86 (Height: 9 1/2" x Width: 7 1/4" x Length: 8 3/8").
1991 Buick Roadmaster Battery Size(s)
Trim |
Battery Size Code |
Battery Size (L X W X H) (Imp.) |
Battery Size (L X W X H) (Metric) |
Standard |
75/86 |
9 1/2" x 7 1/4" x 8 3/8" |
24.0 cm x 18.0 cm x 20.1 cm |
Buick Roadmaster Battery Size Comparisons By Year