Genuine 1199970445 Engine Coolant Thermostat Seal

Engine Coolant Thermostat Seal for Mercedes-Benz V8

This Genuine engine coolant thermostat seal is a direct-fit sealing component for select Mercedes-Benz V8 applications. It is used to maintain a secure seal at the thermostat housing, helping preserve proper coolant control in the cooling system.

Key Features

• Genuine OE replacement thermostat seal
• Part number 1199970445
• Used in Mercedes-Benz cooling system service
• Supports a leak-resistant thermostat housing seal
• Fits select Mercedes-Benz CL500, S420, S500, SL500, E420, E500, 400E, 400SEL, 500E, 500SEC, 500SEL, 500SL, and 400SE applications

Detailed Description

Genuine part 1199970445 is an engine coolant thermostat seal for Mercedes-Benz vehicles equipped with the listed V8 engines. This seal is used at the thermostat housing to help maintain the cooling system’s sealed connection, which is important for stable coolant flow and temperature control. It is a practical OE-style service part for maintenance on Mercedes-Benz CL500, S500, and SL500 models, along with other compatible applications shown in the fitment data.

This part cross-references no additional part numbers in the provided data.

What It Is Used For

• Coolant seepage at the thermostat housing
• Visible staining or residue around the thermostat seal area
• Cooling system service on Mercedes-Benz V8 engines
• Replacing a hardened, flattened, or damaged thermostat seal
• Restoring a proper seal after thermostat housing removal

Installation Notes and Tips

Confirm engine code and model-year fitment before installation, especially on vehicles with engine-specific notes such as From Engine 013778, From Engine 020772, From Engine 026751, From Engine 056886, and From Engine 010205. Clean the sealing surfaces thoroughly before installing the new thermostat seal, and inspect the thermostat housing for wear, corrosion, or distortion that could affect sealing.

Quality Assurance

Genuine OE replacement part 1199970445 is supplied for the listed Mercedes-Benz applications and is identified by the manufacturer part number for accurate service matching.