Four Seasons 86159 Engine Coolant Outlet Flange

Overview of Four Seasons Coolant Flange 86159

The Four Seasons Coolant Flange 86159 is designed for reliable engine coolant management in select BMW models. Engineered to meet or exceed OEM specifications, this plastic coolant flange ensures proper coolant flow and sealing for BMW 318i, 318is, 318ti, and Z3 vehicles.

• Material: Durable plastic construction
• Includes gasket or seal for secure installation
• Two mounting holes with precise bolt hole diameters of 0.232 inches
• Two coolant outlets with barb attachments for secure hose connections
• Base width of 0.375 inches and symmetrical mounting hole spacing of 1.9375 inches
• Designed without thermostat lip, compatible with systems without thermostat integration
• Meets or exceeds OEM quality standards

Four Seasons Coolant Flange Product Line

The Four Seasons Coolant Flange product line focuses on engine coolant components that provide reliable sealing and coolant routing solutions. This line includes flanges designed to fit specific vehicle applications, such as the BMW 318i, 318is, 318ti, and Z3, ensuring compatibility and performance. The Coolant Flange 86159 is part of this line, offering a plastic construction flange with included gasket for effective coolant outlet management.

Detailed Product Description

This engine coolant outlet flange features two coolant outlets, each with barb attachments to facilitate secure hose connections. The flange is constructed from plastic, providing resistance to corrosion and heat typical in engine cooling systems. It includes a gasket or seal to ensure a leak-free installation, although mounting hardware and screws are not included. The flange base measures 0.375 inches in width, with two mounting holes spaced 1.9375 inches apart center-to-center, each with a diameter of 0.232 inches. The flange does not include a lip for thermostat mounting, making it suitable for cooling systems without integrated thermostat housings.

Common Applications and Issues Addressed

• Replacement of cracked or damaged coolant outlet flanges in BMW 318i, 318is, 318ti, and Z3 models
• Resolving coolant leaks caused by worn or failed flange seals
• Restoring proper coolant flow through dual outlet design
• Addressing coolant system overheating due to faulty flange components
• Maintaining OEM-level coolant system integrity with a compatible replacement part

Installation Notes and Tips

Ensure the engine is cool before beginning installation to avoid injury. Remove the old coolant flange carefully to prevent damage to surrounding components. Clean the mounting surface thoroughly before installing the new flange and gasket to ensure a proper seal. Note that mounting hardware and screws are not included, so retain or replace these as needed. Tighten mounting bolts evenly to the manufacturer’s torque specifications to prevent leaks.

Quality Assurance and Warranty

The Four Seasons Coolant Flange 86159 meets or exceeds OEM standards for fit, form, and function. Manufactured with quality plastic materials and including a gasket for sealing, this part is designed for durability and reliable performance in BMW 318i, 318is, 318ti, and Z3 cooling systems. Warranty information should be confirmed with the point of purchase or manufacturer documentation.