CATEGORIES HOMEDucar EnginesDucar 212 EngineDucar 212 Aftermarket Parts Head Stud Kit, GX160/GX200 Item Number: CL-2567 Price: $20.00 Add to Cart This head stud kit contains 4 x M8 x 60, 4 x M8 Nuts, 4 x Washers. For installation, lubricate all threads using motor oil or WD40. Install nuts and washers and torque to 20 ft lbs.