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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.

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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Help Eliminate Excessive Crank Case Pressure With The PDP Oil Cap Breather Kit! We made a replacement for the current breathers on the market that did...


Installing a new exhaust manifold, or simply removing a stock or aftermarket manifold to change gaskets? If so, you'll find that it is a real hassle to keep...


Features Pump to Pump Design for Ease of Installation, Better Looks, and More Efficiency Custom Billet Wheel (with optional polishing) Custom...


Part is item #2 in the picture only. Part Number: PDP4090102


'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.


From Bosch Bosch

Old Style Fuel Connector Tube for 2003-2007 Cummins 5.9L Diesel Includes O-rings. *Price is for one, 6 are needed for complete set. Bosch...

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Custom Side Draft Intake Manifold for the 03-18 Cummins 5.9L or 6.7L Features: Equal Air Distribution Outflows Competitors...

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