Here I am

Jacobs Exhaust Brake

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Out withe the old, In with the Adrenaline

aftermarket mileage/performance

Straight from Cummins... I bought mine for a little over $1k from my local Cummins shop, where the dealer wanted close to $1,600
 
i have three we pulled off of 06's we replaced them with bd's the bd works 2x better than the jacobs if you are really stuck on the jacobs these only have about 1000 miles on them i reused the wiring harness and threw the bolts in the bolt bin you would need new harness belt bolts and switch but you really should go with the bd
 
They seem to have very good prices on pretty much everything they sell. I've bought some sensors from them and was very satisfied.
 
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