The STM -10AN Mitsu-Series turbo oil drain fitting is typically used with the Mitsubishi DSM 14B, 16G, T25, T28 and bolt-on Evo 4-X turbos among many other applications. This is also the same fitting that fits the 4G63 oil pan side. Measures 1.5" from bolt hole to bolt hole. Machined aluminum. Gasket included. Turbo Fitment: Mitsubishi 14B, 16G, T25, T28 Bolt-on Evo 8/9/X Turbos Oil Pan Fitment: 4G63 Evo/DSM Oil Pans Dimensions: 1.5" from bolt hole to bolt hole Includes: (1) STM Fitting (1) OEM Mitsubishi Gasket (MR258477)