This is a full set of OEM bolts for the Ecotec main girdle plate, also know as the main bolt set or crankshaft and perimeter bolts. 

Includes 20 main crank bolts and 10 outer bed plate bolts. 

Fits: 2.0 LNF, 2.0 LDK/LHU, 2.2L L61, and 2.4L LE5. 

Fitment note: May fit LSJ engines. Outer bed plate bolts on the LSJ are 5mm shorter. Ensure proper clearance to oil pan and that bolts take correct torque spec.