Product Description
Engine thermostat and gasket assembly for Clark lift trucks, OEM Part Number 911166, compatible with Mitsubishi 4G32 engines. Designed for OEM-spec cooling performance with a 180°F (82°C) opening temperature. Includes reinforced fiber gasket and robust brass/stainless steel thermostat construction. Direct-fit for Clark models GCS12G127, GCS15G127, GCS17G127, and GCS17SG127.
Specifications
Material & Construction
| Gasket Material | Nitrile rubber reinforced fiber |
| Thermostat Material | Brass and stainless steel |
Part Numbers
| Manufacturer Part Number | 911166 |
| OEM Part Number | 911166 |
| Compatible Engines | Mitsubishi 4G32 |
| Compatible Truck Models | Clark GCS12G127, GCS15G127, GCS17G127, GCS17SG127 |
Performance Specifications
| Rated Duty Cycle | Continuous coolant flow regulation |
Frequently Asked Questions
Q: Which Clark lift truck models does the 911166 engine thermostat and gasket assembly fit?
A: The 911166 is the OEM thermostat assembly for Clark lift trucks equipped with Mitsubishi 4G32 engines. Direct compatibility confirmed for Clark models GCS12G127, GCS15G127, GCS17G127, and GCS17SG127. Verify your truck model and serial range match this engine designation before ordering.
Q: What is the opening temperature and material specification of the 911166 thermostat?
A: The 911166 thermostat opens at 180 degrees Fahrenheit (82 degrees Celsius) for OEM-spec cooling performance in the Mitsubishi 4G32 engine. The thermostat body is constructed from brass with stainless steel internal components for corrosion resistance and durability. The gasket is reinforced fiber nitrile rubber for a reliable seal.
Q: What does the 911166 gasket assembly include and why is it important?
A: The 911166 includes a reinforced fiber nitrile rubber gasket that seals the thermostat housing to the engine block. This gasket prevents coolant leakage and maintains proper cooling system pressure. A damaged or deteriorated gasket causes coolant loss, overheating, and potential engine damage. Replace the gasket whenever the thermostat is removed.
Q: What symptoms indicate the 911166 thermostat needs replacement?
A: Replace the 911166 thermostat if the engine runs consistently hot, the temperature gauge stays high even after warmup, coolant is leaking from the thermostat housing, or the engine overheats during normal operation. A stuck thermostat prevents proper coolant flow and causes rapid engine temperature rise. Delayed replacement risks engine damage.
Q: What is the service life of the 911166 thermostat assembly and gasket?
A: The 911166 thermostat typically lasts 4 to 6 years or 4000 to 5000 operating hours in Clark lift trucks. The gasket may deteriorate sooner if exposed to high coolant temperatures or chemical breakdown. Replace the gasket whenever the thermostat housing is opened. Preventive replacement extends cooling system reliability and reduces downtime risk.
Q: Is the 911166 a direct replacement for Mitsubishi 4G32 engines in other lift truck brands?
A: The 911166 is designed specifically for Clark lift trucks with Mitsubishi 4G32 engines. While the Mitsubishi engine may be used in other brands, verify the thermostat housing design and connection points match your equipment before substituting. Cross-referencing with your OEM parts documentation confirms compatibility before ordering.