Mercruiser 93320A13 extension kit 3" high. Supplied with (4) full flow gaskets part number 27-863726 and all mounting hardware. Also includes XL studs for applications with remote mount oil filter attached to exhaust elbow. Replaces older Mercruiser part numbers 93320A3 and 93320A5. Order restrictor gasket 27-863724 or fresh water cooled block-off gasket 27-8637251 separately if needed.