The Sierra 18-3647 Thermostat Kit is interchangeable with the following: GLM 13101, Mallory 9-43157, Mercruiser 807252Q5, 807252T8. Each Sierra product meets or exceeds the original equipment part it replaces. Contains 18-2552 Thermostat Cover Gasket, 18-2553 Thermostat Cover Gasket, 18-2844 Thermos...

The Sierra 18-2844-9 Thermostat Gasket is interchangeable with the following: Barr MC472748818, GLM 31510, Mallory 9-60010, Mercruiser 27-488181, 27-48818Q01, 27-48818. Each Sierra product meets or exceeds the original equipment part it replaces.