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Category Archives: P7100 Fuel System

How (and Why) the 4BT Cummins Is So Popular

By Featured Writer: Mike McGlothlin If it fits, it ships—but if it outperforms, outruns, and outlasts everything else at the same time then it’s probably worth having. We’re referring to the 4BT Cummins, of course. With its packageable dimensions, abundance of low-rpm torque, overland-friendly fuel efficiency, and decades-long durability it’s become a household name in…
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What’s Required to Outfit Your Jeep Wrangler With A 4BT Cummins

By Featured Writer: Mike McGlothlin It’s durable, it’s reliable, it provides unmatched off-idle torque, and it can double a vehicle’s fuel economy. No wonder the 4BT Cummins has become one of the premier engines for swap projects. And perhaps no other group of enthusiasts has taken to the industrial strength 3.9L diesel quite like Jeep…
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P7100 Fuel Pump Modifications for the 8 Valve 4BT

4BT Engine History and Background The Cummins 4BT has mostly been utilized in applications such as box trucks, small industrial vehicles and agricultural equipment. The 4BT is pretty much just a downsized version of the famous 5.9L 12V Cummins as these engines share almost all of their parts such as pistons, connecting rods, injectors and…
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