Specifications: Condition: New Manufacturer Part Number:PH306 Warranty:1 Year Surface Finish:COPPER / INLAY Brand: Aftermarket Features: 1.Fits for all SB Chevy 283-327-350-383-400 engines. 2.Made of copper. 3.Reusable, no sealant required. 4.Seal perfectly every time by creating a tight leak proof seal by using a clad o-ring design that will last. 5.Fits all SB Chevy engines oval port. 6.These gaskets provide an excellent seal & we guarantee it. 7.Package: Including all items in the picture.