89-02 5.9 CUMMINS RACE GIRDLE. COUNTER BORED DESIGN AROUND 14MM STUD NUT. DOES NOT RELY ON STACKED WASHERS THAT SHIFT. NO STUDS INCLUDED IN THIS KIT. 5/16 A572 STEEL LASER CUT GIRDLE. CNC COUNTER BORE STUD HOLES. MINOR CAP NUT SURFACE MACHING HAS TO BE PERFORMED IN ORDER TO INSTALL THIS GIRDLE. YOUR OIL PAN SURFACE TO CAP NUT SURFACE IS NOT FLAT THATS WHY THIS HAS TO BE PERFORMED. THIS IS THE BEST ENGINE GIRDLE OFFERED IN THE DIESEL MARKET TODAY FROM DESIGN TO LOAD FUNCTION. NOTE: XL 14MM STUDS ARE NOT INCLUDED.