HELLO i have a 2004 sterling L8500 with a 3126B it does not have a exhaust brake what will i need to install one thanks mike ( michael, 02/15/2023 )
We show an option on that truck to have either a 90 degree pipe off the turbo or an "S" pipe. If it has the 90 degree pipe then you would need turbo mount brake part # C40106B, mounting group part # C11558 and control group part # C10319. If it has the "S" pipe it would be an inline brake part # C40113, mounting group part # C11400 and control group part # C10319.
Hello,

I will like to know if i can put this on a steerling truck 2007 with C7 engine with a manual transmission . And what i need too install this and work good.
 ( Dave Rancourt, 01/25/2023 )

The part number for a 2007 Sterling L-Series, Cat C7 Engine with Onboard Air, you would need C40106B for the PRXB valve and C10319 for the harness and control group. For mounting, you would need C10310 Front Clamp, C11350 Rear Clamp and depending on your exhaust size, C11347 for a 3.5” adapter or a C11342 for a 4” adapter.

I want to install this on an 04 F650 that has hydraulic brakes and currently no exhaust brake. Is it true that this setup needs an air compressor to function? ( Sam Smith, 12/01/2022 )
Hello Sam, the Pacbrake exhaust brakes do require a compressor and also a " control group" , which vary depending on vehicle. Some engine/transmission combo's are not compatible with exhaust brake application.  If you can provide the chassis VIN , we can contact Pacbrake for the part #'s required if applicable .  An engine serial # may be helpful as well . 
I have a 2001 F750 with a 3126 cat engine
It currently does not come equipped with a engine brake and does not have air brakes or compressor. Could you please provide a list of all the parts I’d need to convert my truck to air brakes? ( Jacob Cable , 08/21/2022 )

Control group with air compressor: https://www.ultrarvproducts.com/C11775-Control-Group-w-Air-Compressor

Mounting group: https://www.ultrarvproducts.com/C11558-Mounting-Group-for-C40106

Exhaust Brake: https://www.ultrarvproducts.com/C40106B-Pacbrake-PRXB-Exhaust-Brake-Caterpillar-3126B-3126E-C7-4-Full-Marmon

does it take the C10310 to attach the valve to the turbo on a Cat c7 with about 1/2 inch thick flange with both? ( Luc Tremblay, 07/21/2022 )
For technical questions such as this, we recommend contacting PacBrake directly at 800-663-0096.