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Welcome to the 2020 PDP Black Friday/Cyber Monday Sale!

89-98 Dodge 5.9L Cummins Tunnel Ram 12 Valve Intake Plenum Cover

Tunnel Ram 12 Valve

This is a Special Order Part, Please Allow 1-2 Weeks for shipping. 

The Tunnel Ram 12V is a new patented intake for the 89-98 Dodge Cummins 12V diesel engine. Proudly made in the USA from aircraft quality billet aluminum and pressure tested to over 200psi, The Tunnel Ram is able to withstand high boost pressures much better than the stock cast plate. It's unique patented design increases the airflow into the head, which is a known choke point, and distributes the air charge more uniformly between cylinders. What does that mean to you? Faster spool-up for your turbo, lower EGTs (especially in cylinders 1, 5 & 6 which are prone to run hot) and better MPGs.

How can it do this? basically all an engine is, is an air pump. The more air you can get into the engine, the more power it can potentially make.

The Tunnel Ram was built to be a direct bolt-in replacement for the stock plate and fits with all stock and most aftermarket performance intake/fueling accessories. The compound angles of The Tunnel Ram keep the factory location of the intercooler boot as well. No special tools needed and installation is a breeze, takes less than an hour to install on a cool engine.

*Please note that early non-intercooled engines will need modification to the air horn assembly to fit. If your engine has an intake where the grid heater and plenum cover are one piece, you will need to use a delete spacer or later model grid heater to install.


Don't suffocate your Cummins any longer, let it breathe with The Tunnel Ram!
Includes gaskets needed for install.

Part number: CC-TR12V

Dress up your new intake plate and never worry about your fasteners rusting with new stainless steel hardware. Click Here for SS intake bolts.

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