The Freeze Plug Factorycarries over 250 different plugs in stock. We carry them in several materials and finishes. Can’t find your size? No problem! The Freeze Plug Factory can custom make any size for you! Trying to find plugs for a De Soto or a Studebaker? How about those special camshaft plugs? The Freeze Plug Factory will get you out of the jam. Let us help you, we will ship them out immediately.

Brass Cup Plugs

To Order Click on Part #
Part No.
Plug Size.
Rec Bore Measurement.
102
5/16
.313
3/8
.375
13/32
.406
27/64
.422
7/16
.438
29/64
.453
1/2
.500
33/64
.516
17/32
.531
114
9/16
.563
37/64
.578
19/32
.593
39/64
.609
5/8
.625
41/64
.640
21/32
.656
123
11/16
.688
3/4
.750
13/16
.813
7/8
.875
29/32
.906
15/16
.938
1
1.0000
1 1/16
1.0625
1 1/8
1.1250
1 3/16
1.1875
1 7/32
1.2188
1 1/4
1.2500
1 5/16
1.3125
1 21/64
1.328
1 3/8
1.375
1 7/16
1.4375
1 31/64
1.4843
1 1/2
1.500
1 9/16
1.5625
1 5/8
1.625
1 41/64
1.6406
1 11/16
1.6875
1 45/64
1.703
1 3/4
1.750
153 A
1 3/4
1.750
154
1 49/64
1.766
1 25/32
1.781
157
1 51/64
1.796
1 13/16
1.813
160
1 7/8
1.875
161
1 29/32
1.906
1 59/64
1.922
163
1 15/16
1.938
165
1 61/64
1.953
166
1 31/32
1.969
167
1 63/64
1.984
2
2.000
170 A
2
2.000
2 1/64
2.016
172
2 3/64
2.047
2 1/16
2.063
175
2 3/32
2.094
176
2 7/64
2.109
177
2 1/8
2.125
178
2 9/64
2.141
180
2 5/32
2.156
181
2 3/16
2.188
182
2 13/64
2.203
183
2 7/32
2.219
184
2 1/4
2.250
185
2 3/8
2.375
186
2 1/2
2.500
187
2 9/16
2.563

Steel Cup Plugs

Part No.
Plug Size.
Rec Bore Measurement.
5/16
.313
3/8
.375
13/32
.406
27/64
.422
7/16
.438
29/64
.453
1/2
.500
111 S
1/2
.500
33/64
.516
17/32
.531
9/16
.563
19/32
.593
39/64
.609
5/8
.625
41/64
.640
21/32
.656
121 S
45/64
.703
11/16
.688
3/4
.750
13/16
.813
7/8
.875
29/32
.906
15/16
.938
1
1.0000
131 S
1 1/64
1.0156
1 1/16
1.0625
1 1/8
1.1250
1 3/16
1.1875
1 7/32
1.2188
1 1/4
1.2500
1 5/16
1.3125
1 21/64
1.328
1 3/8
1.375
142 S
1 25/64
1.3906
1 7/16
1.4375
144 S
1 31/64
1.4843
37/64
.578
1 1/2
1.500
1 9/16
1.5625
1 5/8
1.625
1 41/64
1.6406
1 11/16
1.6875
1 45/64
1.703
1 3/4
1.750
1 49/64
1.766
155 S
1 47/64
1.7343
1 25/32
1.781
1 51/64
1.796
1 13/16
1.813
1 7/8
1.875
1 29/32
1.906
1 59/64
1.922
1 15/16
1.938
1 61/64
1.953
1 31/32
1.969
1 63/64
1.984
2
2.000
2 1/64
2.016
2 3/64
2.047
2 1/16
2.063
2 3/32
2.094
2 7/64
2.109
2 1/8
2.125
2 9/64
2.141
2 5/32
2.156
2 3/16
2.188
2 13/64
2.203
2 7/32
2.219
2 1/4
2.250
2 3/8
2.375
2 1/2
2.500
2 9/16
2.563
2 3/4
2.750
10.8
.425
11.0
.433
12.0
.472
14.0
.551
16.0
.630
16.5
.650
17.0
.669
18.0
.709
19.0
.748
20.0
.787
21.0
.827
22.0
.866
23.0
.906
24.0
.945
25.0
.984
25.1
.988
26.0
1.024
27.0
1.063
28.0
1.102
29.0
1.142
30.0
1.181
31.0
1.220
31.5
1.240
32.0
1.260
32.4
1.276
33.0
1.299
34.0
1.339
34.3
1.350
35.0
1.378
35.4
1.394
35.5
1.398
36.0
1.417
36.5
1.437
37.0
1.457
38.0
1.496
38.4
1.512
39.0
1.535
40.0
.315
40.5
.315
41.5
.315
42.3
.315
44.0
.315
44.9
.315
45.0
.315
45.5
.315
47.0
.315
49.1
.315
49.5
.315
50.0
.315
50.4
.315
51.0
.315
52.5
.315
56.0
.315
58.0
.315

Stainless Steel Cup Plugs

PART NO
SIZE
Rec Bore Measurement
3/4
19.05
125 SS
13/16
20.64
7/8
22.23
129 SS
15/16
23.81
1
25.4
132 SS
1 1/16
26.99
1 1/8
28.58
1 1/4
31.75
240 SS
34.3
1 3/8
34.93
1 1/2
38.1
147 SS
1 9/16
39.69
1 5/8
41.28
149 SS
1 41/64
41.68
1 3/4
44.45
160 SS
1 7/8
47.63
34.3mm
1.350
34.3 esp
1.330
56mm
2.204

Concave Cup Plugs

PART NO
SIZE
130 CC
1"
137 CC
1" 1/4
140 CC
1" 3/8
146 CC
1" 1/2
148 CC
1" 5/8
153 CC
1" 3/4
170 CC
2"

Brass Metric Cup Plugs

Part No.
Plug Size.
Rec Bore Measurement.
10.8 MM
.425
11 MM
.4330
12 MM
.4724
203
12.7 MM
.5
14 MM
.5511
16 MM
.6299
16.5 MM
.650
17 MM
.6693
207
13 MM
.5118
18 MM
.7087
19 MM
.748
20 MM
.7874
21 MM
.8268
22 MM
.8662
23 MM
.906
24 MM
.9449
25 MM
.9842
25.1 MM
.9881
222
25.7 MM
1.0118
26 MM
1.024
27 MM
1.063
28 MM
1.102
29 MM
1.141
30 MM
1.1811
31 MM
1.220
31.5 MM
1.240
32 MM
1.259
32.4 MM
1.2755
33 MM
1.299
34 MM
1.339
238
34.1 MM
1.342
34.3 MM
1.3503
35 MM
1.3779
35.4 MM
1.3937
35.5 MM
1.3976
248
36 MM
1.4173
250
36.5 MM
1.4370
252
37 MM
1.4566
254
38.4 MM
1.5118
40 MM
1.574
257
40.8 MM
1.6062
258
40.3 MM
1.5866
260
40.5 MM
1.5944
261
41 MM
1.6141
262
41.5 MM
1.6338
264
42 MM
1.6535
42.3 MM
1.665
44 MM
1.732
270
44.5 MM
1.7519
272
44.9 MM
1.7677
45 MM
1.771
276
45.5 MM
1.7913
278
47 MM
1.8503
280
49.1 MM
1.9330
282
49.5 MM
1.9488
50 MM
1.968
286
50.4 MM
1.9842
287
52 MM
2.0472
288
52.5 MM
2.0669
295
56.7 MM
2.2322

Steel Metric Cup Plugs

Part No.
Plug Size.
Rec Bore Measurement.
199 S
200 S
11 MM
.4330
202 S
12 MM
.4724
203 S
12.7 MM
.5
14 MM
.5512
16 MM
.6299
17 MM
.6693
207 S
13 MM
.5118
18 MM
.7087
20 MM
.7874
21 MM
.8268
22 MM
.8662
216 S
24 MM
.9449
218 S
25 MM
.9842
220 S
25.1 MM
.9881
222 S
25.7 MM
1.0118
224 S
28 MM
1.1023
226 S
29 MM
1.1417
228 S
30 MM
1.1811
230 S
31 MM
1.2204
232 S
32 MM
1.2598
234 S
32.4 MM
1.2755
236 S
33 MM
1.2992
238 S
34.1 MM
1.3425
240 S
34.3 MM
1.3503
242 S
35 MM
1.3779
244 S
35.4 MM
1.3937
246 S
35.5 MM
1.3976
248 S
36 MM
1.4173
250 S
36.5 MM
1.4370
252 S
37 MM
1.4566
254 S
38.4 MM
1.5118
40 MM
1.5748
257 S
40.8 MM
1.6062
258 S
40.3 MM
1.5866
260 S
40.5 MM
1.5944
261 S
41 MM
1.6141
262 S
41.5 MM
1.6338
264 S
42 MM
1.6535
42.3 MM
1.6653
44 MM
1.7322
270 S
44.5 MM
1.7519
272 S
44.9 MM
1.7677
45 MM
1.7716
276 S
45.5 MM
1.7913
278 S
47 MM
1.8503
280 S
49.1 MM
1.9330
282 S
49.5 MM
1.9488
50 MM
1.9685
286 S
50.4 MM
1.9842
287 S
52 MM
2.0472
288 S
52.5 MM
2.0669
295 S
56.7 MM
2.2322

Pipe Plugs

PART NO
SIZE
MILLIMETER
500
1/16
C.S.Hex
501
1/8
C.S.Hex
502
1/4
C.S.Hex
503
3/8
C.S.Hex
503e
3/8 e (teflon)
C.S.Hex
504
1/2
C.S.Hex

Since 1967, Prokar continues to manufacture excellent quality plugs. Each plug is made to specifications as provided by the individual auto manufacturer. The Freeze Plug Factory will not be liable for any or all damages from plugs manufactured to the specifications of the auto manufacturer.