Seal the thermostat housing and keep coolant where it belongs with the AISIN Engine Coolant Thermostat Gasket (THP112). This OE-manufactured gasket drops in as a direct-fit replacement on the 1975-1979 Toyota Corolla (L4-1.2L) and the 1981-1984 Toyota Starlet (L4-1.3L), restoring a clean seal between the thermostat housing and the engine to help prevent coolant leakage.
- OE-manufactured: built for exact form, fit and function so it seats like the original gasket.
- Seals against coolant leakage: forms the joint between the thermostat and housing to help contain engine coolant.
- Direct-fit replacement: designed to install in the factory thermostat location for the listed applications.
- Made in Japan: country of origin: Japan.
A hardened, cracked, or weeping thermostat gasket can let coolant seep from the housing and lead to low coolant level or overheating. If a failed thermostat gasket is the cause, this replaces it and re-establishes the seal. It is a common practice to fit a fresh gasket whenever the thermostat is serviced.
Interchange: 1677-62263 · 039-0056 · 16341-13010 · 16341-13011 · 16341-13040 · 16341-22010
167762263 · 0390056 · 1634113010 · 1634113011 · 1634113040 · 1634122010 · 12G10 · 2138 · 20962 · MG38 · 33624 · P40 · 21380 · 99038 · P2138 · 27138 · P112 · 9MG38 · 9MG38EA
This part cross-references / interchanges with the following part numbers:
12G10, 1677-62263, 039-0056, 2138, 20962, MG38, 33624, P40, 21380, THP-112, 99038, P2138, 27138, P112, 16341-13010, 16341-13011, 16341-13040, 16341-22010, 9MG38, 9MG38EA
Frequently Asked Questions
What does this gasket do?
It forms the seal between the engine coolant thermostat and its housing, helping to prevent coolant leakage at that joint.
Which vehicles does the THP112 fit?
It is a direct-fit replacement for the 1975-1979 Toyota Corolla (L4-1.2L) and the 1981-1984 Toyota Starlet (L4-1.3L). Check the "Vehicles it fits" section to confirm your vehicle.
How do I know if my thermostat gasket needs replacing?
Signs it may need replacing include coolant seeping from the thermostat housing, low coolant level, or a hardened or cracked gasket. Diagnose the cause before replacing.
Should I replace the gasket when I change the thermostat?
Yes, it is common practice to install a fresh gasket whenever the thermostat is removed or serviced to help ensure a clean seal.
Where is this gasket made?
Country of origin: Japan.
