Four Seasons 85999 Engine Coolant Thermostat / Water Outlet Assembly

Reliable Engine Coolant Thermostat and Water Outlet Assembly

The Four Seasons Water Outlet assembly 85999 is designed to maintain optimal engine temperature for select Mercedes-Benz models. This aluminum engine coolant thermostat and water outlet assembly includes a thermostat and gasket, ensuring a complete replacement solution for your vehicle's cooling system.

• Constructed from durable aluminum for long-lasting performance
• Includes thermostat and gasket for a full assembly replacement
• Maximum height of 5.000 inches and precise bolt hole spacing of 3.81 inches
• Inlet diameter of 1.84 inches and mounting flange width of 0.4195 inches
• Meets or exceeds OEM specifications for reliable fit and function
• Compatible with multiple Mercedes-Benz models including C230, C250, C280, C300, C350, CLK350, E250, E300, E350, GLK300, GLK350, ML350, ML450, R350, S350, S400, SLK200, SLK280, SLK300, and SLK350

About the Four Seasons Water Outlet Product Line

The Four Seasons Water Outlet product line focuses on engine coolant components designed to meet or exceed original equipment manufacturer standards. This line provides integrated thermostat and water outlet assemblies that simplify installation and ensure proper engine temperature regulation. The 85999 part number is part of this line, offering a reliable replacement for Mercedes-Benz vehicles requiring precise fitment and quality materials.

Detailed Product Description

This engine coolant thermostat and water outlet assembly is crafted from aluminum, providing corrosion resistance and durability under high-temperature conditions. The assembly includes a thermostat and gasket, eliminating the need for separate purchases and ensuring a proper seal. With a maximum height of 5.000 inches and a bolt hole center-to-center distance of 3.81 inches, this part is engineered for exact fitment. The inlet diameter of 1.84 inches and mounting flange width of 0.4195 inches are designed to match OEM specifications, ensuring compatibility and reliable operation in the cooling system.

Common Applications and Issues Addressed

• Replacement of faulty or leaking water outlet assemblies
• Thermostat failure causing engine overheating or poor temperature regulation
• Corrosion or damage to original aluminum water outlet components
• Coolant leaks around the thermostat housing area
• Maintaining proper coolant flow in Mercedes-Benz C-Class, E-Class, GLK, ML, R, S, SLK, and CLK models

Installation Notes and Tips

Ensure the engine is cool before beginning installation. Remove the old water outlet assembly carefully to avoid damaging surrounding components. Clean the mounting surface thoroughly before installing the new gasket and assembly. Torque bolts to manufacturer specifications to prevent leaks. Verify coolant levels and check for leaks after installation and during initial engine operation.

Quality Assurance and Warranty

The Four Seasons 85999 water outlet assembly meets or exceeds OEM standards for fit, form, and function. Manufactured with high-quality aluminum and including all necessary seals, this part is designed for durability and reliable performance. While specific warranty details may vary, Four Seasons products typically come with a limited warranty against defects in materials and workmanship.