Are there gaskets required between the pacbrake and turbo and exhaust side, and if so what are the part numbers needed on the C40106B exhaust brake,
Thank You
( Bill Brainard, 03/03/2025 )
No, there are no gasket used, just the v-band clamps.
Does this item require a core return?
C40106B
( Bill Brainard, 02/26/2025 )
No, it does not. 
I have a 2005 Freightliner M6 chassis with a C7 Cat motor. I would like to add an exhuast brake. What parts do I need to complete the installation? ( ROBERT MATHERLY, 05/02/2024 )
You would need the brake part # C40106B, mounting group part # C11546 and control group part # C20123. PacBrake recommends using the factory Freightliner exhaust brake switch part # A06-37217-056 as well. 
I have a 2007 bluebird vision school bus with a CAT C7 wex series (built in 2006). What parts would I need to install the exhaust brake? Also, does it require any welding or can it all be done with clamps?

Thanks.
Mark.
( Mark Anderson, 12/16/2023 )
We do not have a vehicle specific listing for this but it can be done, we just need additional information. What would be really helpful, are some pictures of the turbo and the exhaust coming off of it. This will determine if the brake can be mounted to the backside of the turbo or if we would need to do an inline brake further back in the exhaust system. We also will need to know if you have on-board air to operate the brake. Last bit of info, we would want to verify you have a 4th generation Allison, if you could get the Allison serial # off the data plate on the side of the transmission we will be able to determine.
99 kw t300
Cat 3126
10spd gear box
What would i need to make this work?
( Chris, 05/03/2023 )

If it's a 3126 then you would want part # C40105, if it's a 3126B then you would want C40106B. Either brake will take mounting group part # C11558 and control group part # C10319.