For: Thermostat housing to port exhaust manifold| | Fits: MCM V-6 & V-8 (305, 350 & 377 cid) engines| | Fits: 262Mag w/ Fuel Cool, 4.3L-LX (1996&up) w/ 1pc. manifold, 5.0L-EFI (1998&up| | Fits: 5.7L-EFI (1996-97), 6.2L MPI (2001&up)| | Mercruiser Stern Drive.| | 32-860144