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Callies Durastar crankshafts are designed to be substantially stronger than OEM shafts currently found in GM’s popular Duramax diesel
Plus our upgraded turbine wheel and HFV technology help to lower EGTs which gives you even more confidence when towing a heavy load up a steep grade
Want More Power and excellent street manners
These studs are rated at 220
800 lbs for OEM
2009-2024 Cummins 6.7L Dirty EGR/Cooler Delete Kit (I67-EGR-A006) 6.0L Callies Durastar crankshafts are designed2009 2024 Cummins 6. 7L Dirty EGR Cooler Delete Kit (I67 EGR A006) Stop soot buildup and protect your engines hottest cylinders. The Dirty EGR Upgrade Kit for the 20092024 6. 7L Cummins is engineered to do more than just clean up your engine bay, it actively improves engine longevity by re routing coolant to the back of the head. By circulating coolant between cylinders 5 and 6, this kit addresses the notorious hot spots at the rear of the block where
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