Description

Sierra’s 18-3568 Thermostat Kit fits GM V-6 and V-8 engines with closed cooling (1998 and newer), 5.7L MIE (0L002003 and up), MX6.2L MPI (0L680003 and up), 454 Horizon MIE (0L002200 and up), and 502 Mag MPI (0L01700 and up). The kit includes (1) 18-3555 Thermostat and (1) 18-1508 Thermostat Seal. It is interchangeable with Mercruiser Stern Drive 99155T1. Each Sierra product meets or exceeds the original equipment part it replaces.
Fits GM V-6 and V-8 engines with closed cooling (1998 and newer), 5.7L MIE (0L002003 and up), MX6.2L MPI (0L680003 and up), 454 Horizon MIE (0L002200 and up), and 502 Mag MPI (0L01700 and up)
Includes (1) 18-3555 Thermostat and (1) 18-1508 Thermostat Seal
Interchangeable with Mercruiser Stern Drive 99155T1
Each Sierra product meets or exceeds the original equipment part it replaces