1 Set New Full Head Gasket Set Fit For Caterpiller CAT C13 Engine. Full Head Gasket Set 1 Set. Fit For Caterpiller CAT C13 Engine. Some of the packages cannot be delivered to a PO Box. Package will be held until a valid physical address is provided. Customer service from Monday to Friday. Response will be within 24 hours, weekend or holidays not included. With your support, we will make a progress everyday, we always grow up with you.