Alternator Dimensions

Alternator ModelCase DiameterBolt-to-Bolt Tension to Mounting FootOverall HeightCase Length Front-to-BackOverall Length (Standard Pulley)Dual Foot Saddle Width (Inside)Rear Foot Width
(including Bushing)
Front Foot WidthFront Foot to Center of Inside SheaveStandard Pulley DiameterMounting Foot BoreTension Arm Bolt Dia. / Thread CountStator Poles
60
Series
5.35"
136 mm
6.6"
167 mm
7.5"
190 mm
5.08"
129 mm
SV: 6.63"
168 mm
3.28"
83 mm
0.94"
24 mm
0.61"
16 mm
0.5"
13 mm
SV: 2.7"
69 mm
0.39"
10 mm
M8 x 1.2512
621
Series
5.35"
136 mm
6.6"
167 mm
7.5"
190 mm
5.08"
129 mm
SV: 6.63"
168 mm
N/AN/A1.0 / 2.0"
25 / 51 mm
0.5"
13 mm
SV: 2.7"
69 mm
.39" / 0.5"
10 / 13 mm
M8 x 1.2512
604
Series
5.35"
136 mm
6.6"
167 mm
7.5"
190 mm
5.08"
129 mm
SV: 6.63"
168 mm
4.15"
105 mm
0.94"
24 mm
0.61"
16 mm
0.5"
13 mm
SV: 2.7"
69 mm
0.39"
10 mm
M8 x 1.2512
XT-170
Series (12/24)
5.26"
134 mm
6.53"
165 mm
7.43"
188 mm
3.54"
90 mm
DV: 8.00"
203 mm
3.28"
83 mm
.75"
19 mm
0.55"
14 mm
0.62"
16 mm
DV: 2.7"
69 mm
.39" / 0.5"
10 / 13 mm
M8 x 1.2516
XT-250
Series
5.59"
142 mm
6.88"
175 mm
7.81"
198 mm
5.30"
134 mm
DV: 7.15"
181 mm
3.28"
83 mm
.92"
23 mm
0.60"
15 mm
1.58"
40 mm
DV: 2.7"
69 mm
.38"
10 mm
M8 x 1.2516
XT-DF4-250
Series
5.59"
142 mm
8.07"
205 mm
9.61"
244 mm
5.70"
144 mm
DV: 7.17"
182 mm
4.10"
104 mm
1.00"
25 mm
0.60"
15 mm
1.58"
40 mm
DV: 2.7"
69 mm
0.50"
13 mm
3/8" x 16NC16
94
Series
6.0"
152 mm
8.0"
203 mm
9.0"
229 mm
5.0"
127 mm
DV: 7.0"
178 mm
N/AN/A2.0"
51 mm
1.0"
25 mm
DV: 2.9"
74 mm
0.5"
13 mm
3/8" x 16NC12
94LY
Series
6.0"
152 mm
8.0"
203 mm
9.0"
229 mm
5.0"
127 mm
DV: 7.0"
178 mm
3.28"
83 mm
0.55"
14 mm
0.88"
23 mm
1.0"
25 mm
DV: 2.9"
74 mm
0.5"
13 mm
3/8" x 16NC12
95
Series
6.0"
152 mm
7.7"
196 mm
9.0"
229 mm
6.5"
165 mm
DV: 8.7"
221 mm
4.1"
104 mm
.75"
19 mm
0.56"
14 mm
1.1"
28 mm
DV: 2.9"
74 mm
0.5"
13 mm
3/8" x 16NC12
96
Series (48V)
6.0"
152 mm
7.7"
196 mm
9.0"
229 mm
6.5"
165 mm
DV: 8.7"
221 mm
4.1"
104 mm
.75"
19 mm
0.56"
14 mm
1.1"
28 mm
DV: 2.9"
74 mm
0.5"
13 mm
3/8" x 16NC12
97XD
Series (24V)
6.30"
160 mm
8.5"
216 mm
9.17"
233 mm
6.7"
170 mm
K6: 8.71
221 mm
3.98"
101 mm
.93"
24 mm
.56
14 mm
1.77"
44 mm
K6: 2.6
65 mm
.5"
13 mm
1/2" x 13NC16
97EHD
Series
6.5"
165 mm
8.4"
213 mm
9.75"
248 mm
8.125"
207 mm
DV: 10.9"
277 mm
4.1"
104 mm
.75"
19 mm
0.65"
17 mm
1.2"
30 mm
DV: 2.9"
74 mm
0.5"
13 mm
1/2" x 13NC12
98
Series
8.25"
210 mm
8.25"
210 mm
9.6"
244 mm
8.0"
204 mm
DV: 11.0"
279 mm
4.1"
104 mm
0.75"
19 mm
0.58"
15 mm
1.1"
28 mm
DV: 2.9"
74 mm
0.5"
13 mm
1/2" x 13NC14

Notes:
In order to ensure quality, Balmar reserves the right to make changes which may affect alternator dimensions or specification.  Balmar is not liable for any damages or injuries resulting from faulty product installation.  See the Balmar Warranty and ordering instructions for more information.

Small case 60-Series Alternators are equipped standard with 10mm bore spacers and bushings.  8mm bore spacers and bushings are available for those units.  Call Balmar Customer Service at 360-435-6100 for assistance.

621-Series alternators are equipped with a removable bushed 1” spacer for use with 2” installations.  1” mounts feature a 0.50” bore.  2” mounts feature a 0.38” bore.  Always compare the existing alternator & replacement alternator dimensions.  Balmar cannot guarantee direct OEM replacement.