Sierra Marine Parts Catalog
SHIELDS EXHAUST
SHIELDS HOSE CLAMPS
PROTECTOR vALvES
All components are manufactured from marine
grade 316 stainless steel. These clamps are
Specially compounded rubber flapper valves designed
designed to fit many applications from 5/16" to 7"
to prevent water from entering the exhaust system in
diameter hoses.
following seas or when backing down. Made with weather
resistant EPDM with U/V stabilizer.
Sierra No.
Bulk No.
Diameter Size
Std. No.
/16" to 7/8"
N-187307
006
5
/16" to 11/16"
N-187308
010
9
Pipe
/16" to 11/4"
N-187309
012
Code #
Size
mm
O.E.M.
O.E. #
9
/16" to 11/2"
N-187310
016
11
3"
76.2
Mercury
34765A1
/4" to 13/4"
4"
101.6
Mercury
12644A1
N-187311
020
3
18-4458*➀
5" or 6"
127 or 152.4
--
--
11/16" to 2"
N-187312
024
N-184456
3"
76.2
--
--
1 9/16" to 21/2"
N-187313
032
N-184457
4"
101.6
--
--
2 9/16" to 31/2"
097R
048
N-184458➀
5" or 6"
127 or 152.4
--
--
21/2" to 41/2"
590R
064
* Display Packaged
18-7316 ➂
096R
3" to 5"
072
➀ Must be cut at marks to fit 5" pipe
N-187317
5" to 7"
104
18-#'s include stainless steel hose clamp.
➂ PKG OF 2
N-#'s are bulk flappers only
SHIELDS EXHAUST HOSE
CLAMPS T-BOLT BAND CLAMPS
These exhaust hose clamps are designed to fit Shields series 200,
250, and are perfect for any application below the water line. The band
is 316 stainless steel and is .025 thick by .75 wide. Other hardware
includes an extra long 1/4" bolt and a nylon inset locknut. The bolt,
nut and trunion are 18-8 (304) stainless steel. Maximum torque of 75
inch pounds.
Diameter
Hose
Wt.
Range
mm
I.D.
mm
"C"
Code No.
18-720-1000 ➁
1.18 - 1.47
30.0 - 37.3
1"
25.4
9.4
1 1/2"
18-720-1120 ➁
1.70 - 2.03
43.2 - 51.6
38.1
12.5
18-720-2000
2.27 - 2.67
57.7 - 67.8
2"
50.8
12.8
2 1/2"
18-720-2120
2.68 - 3.34
68.1 - 84.8
63.5
15.6
18-720-3000
3.10 - 3.76
78.7 - 95.5
3"
76.2
15.8
3 1/2"
18-720-3120
91.2 - 108
3.59 - 4.25
88.9
17.2
18-720-4000
4.18 - 4.84
106.2 - 122.9
4"
101.6
18.8
4 1/8"
18-720-4180
4.25 - 4.91
108.0 - 124.7
104.8
18.9
4 1/2"
18-720-4120
120.7 - 137.4
4.75 - 5.41
114.3
20
4 1/2"
18-720-4120S ✱
4.68 - 5.34
118.9 - 135.6
114.3
20
18-720-5000
5.30 - 5.96
134.6 - 151.4
5"
127.0
22
18-720-5000S ✱
131.6 - 148.3
5"
127.0
22
5.18 - 5.84
5 1/2"
18-720-5120
5.75 - 6.41
146.1 - 162.8
139.7
25
5 1/2"
18-720-5120S ✱
5.68 - 6.34
144.3 - 161.0
139.7
25
18-720-6000
6.38 - 7.04
162.1 - 178.8
6"
152.4
27
18-720-6000S ✱
6.18 - 6.84
157.0 - 173.7
6"
152.4
27
18-720-8000
8.42 - 9.08
213.9 - 230.6
8"
203.2
29
18-720-8000S ✱
8.18 - 8.84
207.8 - 224.5
8"
203.2
29
18-720-10000
10.45 - 11.11
265.4 - 282.2
10"
254.0
31
18-720-10000S ✱
10.18 - 10.84
258.6 - 275.3
10"
254.0
31
18-720-12000
12.38 - 13.04
314.5 - 331.2
12"
304.8
33
18-720-12000S ✱
12.18 - 12.84
309.4 - 326.1
12"
304.8
33
18-720-14000
14.50 - 15.16
368.3 - 385.1
14"
355.6
41.1
18-720-14000S ✱
14.30 - 14.96
363.2 - 380.0
14"
355.6
41.1
➁ Clamps for 1" and 1 1/2" are 5/8" wide
✱ Designed to fit Series 202 silicone exhaust hose
99