New CAT Aftermarket O-Ring Seal Kits 4C4782 O-Ring Seal Kits 4C4782 Made to fit Caterpillar 4C4782 Meets OEM Specs for Fit and Performance This is a new item O-Ring Seal Kits 4C4782 Items are sold by part number only. Picture is for illustration purposes and the part or parts may be different in color or quantity. Use of any OEM manufacturer name is not intended to represent any relationship between the two companies, instead it indicates that we sell replacement parts that are compatible with OEM components.