For starters, the ISC was treated to a stiffer block with integrated fluid lines rather than utilizing external, wear-prone hoses. The 6CT to ISC changeover took place during the same period and many of the same technologies were implemented. If you’re familiar with the story of how Cummins replaced the 6BT 5.9L with the ISB 5.9L, the story between the 6CT and ISC 8.3L will definitely rhyme. It’s an engine that is much-celebrated in the motorhome segment, and one that continues to power countless RV’s down the road today. Here, we’re highlighting the ISC 8.3L Cummins, an engine that replaced the mechanical 6CT with an electronically controlled injection system and cleaner emissions. Used in everything from school buses to excavators (known as the QSC 8.3L in off-highway applications), and gen-sets to dump trucks to motorhomes, the 8.3L Cummins continues to enjoy a reputation for reliability, longevity, sufficient power, and ease of serviceability. What began as the 6CT 8.3L and then transformed into the electronically controlled, CAPS-fueled ISC 8.3L, followed by the high-pressure common-rail (HPCR) ISC 8.3L yielded three decades of one of the most durable medium-duty diesel power plants ever produced. Nozzles & Injectors Most of the inj’s on our site are built/modified in house.In the long and storied history of Cummins engine lineage, it doesn’t get much more legendary than the 8.3L platform.4bt HE Series Turbo's & accessories 4bt HE Series Turbo’s & accessories.4bt HX Series Turbo's & accessories 4bt HX Series Turbo’s & accessories.4bt Engines & Parts 4bt Engines & Parts.4bt Fuel Supply Pumps 4bt Fuel Supply Pumps.4bt Injection Pumps 4bt Injection Pumps.4bt Injection Pump Parts 4bt Injection Pump Parts.4bt Nozzles & Injectors 4bt Nozzles & Injectors.Plus High volume oil pump & stronger VE pump gear Also performance injectors & turbo’s as well as $bt P7100’s and P7100 conversion kits. To performance fuel pin & 3200 gov spring. 4BT Cummins Your source for 4bt parts – from stock & performance Bosch VE pumps.

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