1989-1998 Cummins 5.9L Gator Fasteners HD Main Stud Kit (MSK5912)

Gator Fasteners Heavy Duty Main Studs are design to hold the bottom end of your 12 Valve 5.9L together whether you're building a tow rig, race truck or just a daily driver.

Will not fit 1997.5 and later trucks with 12mm studs. If your not sure, see the image showing the turbo oil drain ports. 14mm engines have one port while 12mm engines have two.