
Detailed Photos





Installation Instructions
Product Description
17685-91D00-000
GASKET,THERMOSTAT COVER, Suzuki,
For Outboard: Suzuki DT9.9A, Suzuki DT15A, Suzuki DT15, Suzuki DT9.9
Functions:
1. Sealing the Thermostat Housing: The primary function of the thermostat cover gasket is to create a leak-proof seal between the thermostat housing and the engine block or cooling system. This prevents coolant or water from leaking out, ensuring the cooling system is effective and maintains proper pressure. |
2. Maintaining Pressure in the Cooling System: The gasket helps maintain the right pressure within the cooling system, which is essential for the thermostat to regulate water flow efficiently. Any leaks could cause a drop in pressure and affect the engine's cooling performance. |
3. Preventing Coolant Loss: A tight seal prevents coolant from leaking out of the thermostat housing, which could lead to engine overheating and a loss of the cooling fluid required for the engine to operate safely. |
4. Protecting Engine Components: By preventing leaks, the gasket also protects sensitive engine components from potential damage caused by exposure to heat, excess moisture, or corrosion. |
5. Supporting Thermostat Functionality: The gasket ensures that the thermostat is properly enclosed and functioning in a controlled environment. By sealing the housing, it helps the thermostat maintain a consistent temperature by ensuring that coolant is directed through the system as needed. |
Maintenance Tips:
1. Inspect Regularly: The gasket should be checked during routine maintenance intervals, especially when performing other cooling system maintenance tasks, such as replacing the thermostat or flushing the engine. Look for signs of wear, cracking, or deterioration. |
2. Replace When Damaged: If the gasket shows any visible signs of wear (such as cracks, brittleness, or compression), it should be replaced immediately. A worn or damaged gasket can lead to coolant leaks and engine overheating. |
3. Use Proper Torque: When reattaching the thermostat cover, ensure that the bolts are tightened to the manufacturer's recommended torque specifications. Over-tightening can crush the gasket, while under-tightening can lead to leaks. |
4. Clean Mating Surfaces: Before installing a new gasket, ensure that the mating surfaces of the thermostat housing and the engine block are clean and smooth. Old gasket material, dirt, or debris can prevent a proper seal, leading to leaks or a poor fit. |
5. Flush the Cooling System: Flushing the cooling system regularly, especially after use in saltwater, helps remove debris, sediment, or scale buildup. This can reduce the risk of clogging and help preserve the integrity of the thermostat housing and gasket. |
Common Signs of Wear or Failure:
1. Coolant Leaks: One of the most obvious signs that the thermostat cover gasket is failing is coolant leaking around the thermostat housing. This may be visible as coolant drips or puddles under the engine. A leak can reduce the efficiency of the cooling system and potentially lead to overheating. |
2. Engine Overheating: If the gasket fails to seal properly, it may result in coolant loss or insufficient cooling, causing the engine to overheat. If you notice the engine temperature gauge reading too high or the engine running hotter than usual, check the gasket for leaks. |
3. Visible Cracks or Damage to the Gasket: During routine inspections, look for cracks, holes, or signs of wear on the gasket. If the gasket appears brittle, dry, or cracked, it will need to be replaced. |
4. Coolant Pressure Problems: A worn or damaged gasket can lead to a drop in the pressure within the cooling system. This may affect the thermostat's ability to regulate the engine's temperature properly, potentially causing inconsistent engine performance or overheating. |
5. Corrosion or Stains Around the Housing: Signs of rust or corrosion around the thermostat housing may indicate that the gasket is no longer sealing properly. This could lead to leaks and coolant or water buildup around the engine. |
6. Inconsistent Temperature Regulation: If the engine temperature fluctuates unexpectedly or the thermostat fails to open and close properly, it could be a sign that the gasket is not providing a proper seal, allowing coolant to escape and disrupting the cooling system's performance. |
More Gaskets for Suzuki:
GASKET |
2-STOKE POWER |
SUZUKI 11141-93950 GASKET,CYLINDER |
9.9/15HP |
SUZUKI 11141-94440/11141-94441/11141-94450 GASKET,CYLINDER |
40HP |
SUZUKI 11141-96343/11141-96344 GASKET,CYLINDER |
20/25/30HP |
SUZUKI 11162-94410/11162-92L00 GASKET, CYLINDER HEAD COVER |
40HP |
SUZUKI 11141-98411 GASKET, CYLINDER HEAD COVER |
2/2.2HP |
SUZUKI 11433-93901/11433-93911/11433-93912 GASKET, UNDER OIL SEAL |
9.9/15HP |
SUZUKI 11433-94411 GASKET, UNDER OIL SEAL |
40HP |
SUZUKI 11433-94412 GASKET, UNDER OIL SEAL |
40HP |
SUZUKI 11433-96330/11433-96302 GASKET, UNDER OIL SEAL |
20/25/30HP |
SUZUKI 11434-94411 GASKET, UNDER OIL SEAL |
40HP |
SUZUKI 52113-93910 GASKET,DRIVE SHAFT HOUSING |
9.9/15HP |
SUZUKI 52113-96330 GASKET,DRIVE SHAFT HOUSING |
20/25/30HP |
SUZUKI 14212-94413/14212-94411 GASKET,EXHAUST TUBE |
40HP |
SUZUKI 14212-96310 GASKET,EXHAUST TUBE |
20/25/30HP |
SUZUKI 14151-93912 GASKET,EXHAUST |
9.9/15HP |
SUZUKI 14151-94411 GASKET, EXHAUST COVER |
40HP |
SUZUKI 14151-96311 GASKET, EXHAUST COVER |
20/25/30HP |
SUZUKI 17472-96301/17472-96303 GASKET PUMP CAS |
20/25/30/40HP |
SUZUKI 17472-93910 GASKET, PUMP CASE UNDER |
9.9/15HP |
SUZUKI 17472-87E10 GASKET, PUMP CASE |
90/100HP |
SUZUKI 17452-93910 GASKET, WATER INLET HOUSING |
9.9/15HP |
SUZUKI 09168-10022 GASKET |
2/2.2/3.5/4/5/6/8/9.9/15/16/20/25/28/30/35/40/50/55/60/65/75/85/90/100/115/140/150/175/200/225HP |
Company Profile

