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Cummins 4 Cyl 4BT 3.9L Cams Print this Article

We've been working hard on new grinds for your Cummins 3.9L 4BT series diesel engine. We have 4 stages available, with profiles that are meant for driveability or for out-and-out racing. The first 3 stages will increase your mpg, decrease smoke output and drop your EGT temperatures significantly!

Click here for complete information. Get your cummins 3.9L 4BT series engine working to its full potential!