Engine Overview

The ISB 5.9-Liter Cummins Engines are used in many applications including step vans, uniform and commercial delivery vehicles. NPD has recently added this product offering for CPL 8136 model years 2002-2006.
 

NPD utilizes torque plating methods on the ISB Cummins Engines for boring and honing to ensure block straightness, which reduces break-in time and crankcase pressure. In addition, NPD uses OEM or equivalent pistons, rings, bearings, valves and gaskets, making sure that this engine will stand the test of time. The ISB Cummins Engines depending on application utilize either the VP series or the CP3 Series (Common Rail) injection systems. 5.9-Liter ISB  Cummins Engine range from 175HP in the Freightliner, Sterlings, Bus, Yard Tractors,  to 325 HP in the Dodge Ram Cummins Engines.

Dynomometer Testing

All of NPD's Complete Drop-In Cummins ISB Engines are 100% dyno tested prior to shipment. Computer controls ensure that each engine dyno test is conducted under standard, repeatable settings. Every engine is run through a warm up cycle; three separate cruise segments simulating light, medium and heavy throttle conditions; maximum torque and horsepower tests; both high and low idle tests; and a black light leak detection test with dyed oil, coolant and fuel.