Nissan S14/S15 Factory drain gasket from the factory bottom mount T28 to the block. This is a great replacement for S14/S15 motor with needing a new turbo drain gasket. This is also perfect for S13 guys upgrading to the many variations of the T28 (GT2560R/GT28R/GT28RS/GT2871R and many more). This will make the T28 series turbo drain system bolt on to the S13 SR20DET with no modification required. S14/S15 drain gasket is recommended to be used with Nissan drain tube/hose for absolute bolt on installation. This gasket is required to get your S13 motor running with T28 turbo.