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External Engine Parts

Grid heater delete, radiator hoses, breathers, and more! From Cummins, Glacier Diesel, BD Power, Banks, and Mopar.

2003-2007 Dodge Cummins external engine upgraded and replacement parts.

'03-'07 5.9L "Air-Boss CR" Intake Plenum Cover & Grid Heater Delete Kit

EGT's running too high? Can't use all of the fuel you have available? The GDP Air-Boss intake plate gives the largest flow increase possible short of milling the cast plenum off the head and installing a fabricated intake plenum such as the ZZ Fab unit.

The Air-Boss plenum isn't just a replacement flat aluminum plate as seen in other designs. The Air-Boss is a true, elevated plate designed to flow as much air as possible to cylinders 4, 5, and 6. We've all have seen the head gasket failures between the hottest running #5 and #6 cylinders. With our plate design we open up the plenum area to the starving rear cylinder by a full 30%. By increasing airflow to the rear cylinders we reduce EGT's and allow you to run even higher fueling levels.

The Air-Boss plenum kit also includes a shortened grid heater delete block to maintain the factory IC piping to intake manifold connection geometry . Maintaining this geometry makes the Air-Boss plenum compatible with ALL aftermarket intake manifolds and the stock mounting hardware.

Grid Heater options:

A) The standard Air-Boss CR kit includes a custom height grid heater delete block.

B) For colder climates we now offer the Air-Boss CR with a grid heater option. This option uses the factory grid heater (no delete included) and custom length stainless steel studs to accomodate the increased plenum height of the Air-Boss CR.

C) For customers that want to swap back and forth between the heater and delete block we offer both item in one package.


Kit includes Air-Boss intake plate, factory gaskets, custom height grid delete block and/or optional stainless steel studs, and shortened injector line retaining brackets.


Do you have a high horsepower diesel truck or tractor puller? If so, ATI has the damper for you!
    Eliminates torsional crankshaft vibrations
    Exceeds SFI 18.1 specs
    Black zinc chromate finished

These Super Damper standard harmonic balancers from ATI are specifically designed for high-rpm engines. Their proven elastomer is designed and tuned to eliminate harmful crankshaft harmonics that cause parasitic horsepower loss. They are actually two dampers in one--a 4 in. diameter inner damper and a 6 3/8 in., 7 in., or 8 in. diameter outer damper in two shells that bolt to the crank hub. These dampers are engineered to all but eliminate worn parts and timing problems. They're tunable in the field, rebuildable, and extremely efficient at all rpm.

ATI: 917374

Picture for representation purposes only.

These Dampers do not come with bolts to install it on the crank. You will need to either use the stock bolts or buy new ones.  

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Tunnel Ram CR 03-07 Intake Plate The Tunnel Ram CR is a new patented intake for the 03-07 Dodge Cummins 24V diesel engine. Proudly made in the USA...


Stainless steel 5/8" boost bolt tapped for 1/8" senders or fittings. Great for installation of boost gauges without having to drill and tap your manifold....

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