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3 Powerstroke OBS (94-98)
4mm on the original to 7
cleaner exhaust
considerably deeper nitride layer and unique machining features
HC-2: For large-journal cams (2
2007-2018 Cummins 6.7L Main Stud Kit (247-5405) 2017 - 2023 GM Exhaust Systems 3 Powerstroke OBS (94-98)2007 2018 Cummins 6. 7L Main Stud Kit (247 5405) The ARP 247 5405 Main Stud Kit for your 2007. 5 2018 Dodge 6. 7L Diesel is recommended over bolts whenever possible for several key reasons. First is the ability to obtain more accurate torque readings because studs don't "twist" into the block. All clamping forces are on one axis. By the same token, there is less force exerted on the block threads, which contributes to improved block life. Finally, the