Blue Ox Exhaust Brakes

WM902/WM903 Mounting Kit

WM902 series mounting kits are used to install WM770 series exhaust brakes in exhaust systems with diameters between 4 and 5 inches. A turbo-mount kit, WM902A is available to mount the WM770 exhaust brake in the turbo outlet of some Cummins and Caterpillar engines.

WM903 series mounting kits install the WM789 series exhaust brake in exhaust systems with diameters of 3 1/2 inches or less

Blue Ox wm902aBlue Ox 902bBlue Ox 902c

Blue Ox 902cBlue Ox 903

WM902/WM903 Kit Breakdown:

771/770 Mounting Kit

Item
Description
Qty.
WM902A
117558
WM902B
117559
WM902C
117560
WM902C2
130100
WM902D
117561
WM902E
117562
1
Adapter
1
117488
117487
2
U Clamp
1
117505
117505
117504
117504
117504
117503
3
V Band Clamp
2
117507
117507
117507
117507
117507
117507
4
Gasket
2
118394
118394
118394
118394
118394
118394
5
Adapter
2
118179
1
117490
117491
130099
1
117491
1
160013
6
Gasket
1
130095
Pipe Size
5" O.D.
TURBO
5" ID
4" ID
4" O.D.
4"
FLANGE
3 1/2" ID

780 Mounting Kit

Item
Description
Qty.
WM903A
117835
WM903B
117836
WM903C
117837
WM903H
131495
1
Adapter
1
2
U Clamp
1
117503
117502
117843
117502
3
V Band Clamp
2
118396
118396
118396
118396
4
Gasket
2
118395
118395
118395
118395
5
Adapter
2
118029
118030
118064
131480
Pipe Size
3.5 ID
3.0 ID
2.5 ID
3.0 ID

781/790 Mounting Kit

Item
Description
Qty.
WM904A
(781)
WM904B
(790)
WM904C
(781)
1
Adapter
1
2
U Clamp
1
117503
117503
117504
3
V Band Clamp
2
160029
160027
(1)
160029
4
Gasket
2
118397
118397
118397
5
Adapter
2
160014
160014
(1)
160039
Pipe Size
3 1/2" ID
3 1/2"
4" ID