This ARC side cover kit fits the old style, non-hemi Harbor Freight Predator. It features side-by-side dual ball bearings that support the crank, and gives it another fulcrum point to help eliminate any crankshaft flexing. It has an integral O-ring along the perimeter, in it's machined groove, that guarantees an effective seal. A total of 4 solid pin receptacles mate with solid dowels to increase mating shear strength. Bronze bushing support for the camshaft main increases strength and minimizes potential for wear. It has 2 venting holes at the top with 1/8" NPT plugs. It also has 2 oil fill ports with billet aluminum, hand-tighten plugs. This kit ncludes bearings, seal, gasket, O-rting, plugs and caps, and installation hardware.