- About This Product
- Install And Tech Information
DescriptionThis is an OEM replacement vacuum pump diaphragm for the 2003 to 2007 5.9L Dodge Ram trucks equipped with the Jacobs Brake.
1-year manufacturer warranty.
ReviewsWrite a review
May 10, 2020 | By Thomas
I purchased the HD version of this diaphragm replacement. It works great. I used Amsoil 5w-30 in the housing where it specifies a 30 viscosity oil. Jake brake works again, super smooth and quiet operation. Thanks guys for keeping replacements in stock.
Oct 5, 2017 | By Jeff
Thank you for a fast and accurate delivery on the vacuum pump. Your prices are so reasonable I order another one just to have since this is the truck I'm going to have for a life time !!!!
Install and Tech Information
Download Jacob Exhaust Brake Installation Instructions.pdf