Four Seasons 86041 Engine Coolant Air Bleeder Valve

Four Seasons Air Bleeder Screw 86041

Four Seasons 86041 is an engine coolant air bleeder valve made from metal for reliable service in cooling system maintenance. This coolant bleeder screw meets or exceeds OEM requirements and is built for applications where trapped air must be removed from the system during filling or service.

Compatible With Buick Rendezvous, Chevrolet Impala, Chevrolet Monte Carlo, Pontiac Aztek, Pontiac Montana, Oldsmobile Alero, Oldsmobile Silhouette, and Pontiac Trans Sport applications that use this style of coolant air bleeder screw. The Four Seasons Air Bleeder Screw line focuses on direct-fit engine coolant components for common radiator and cooling system service needs.

• Metal construction for cooling system use
• Engine coolant air bleeder valve / bleeder screw design
• Meets or exceeds OEM specifications
• Coolant-style component for radiator and related cooling service
• Gasket or seal not included
• Thermostat not included

Detailed Product Overview

Four Seasons 86041 is a replacement air bleeder screw used in engine coolant systems to help release trapped air during service. Proper air bleeding supports stable coolant circulation and helps restore normal cooling system operation after repairs, coolant replacement, or component service. This part cross-references 815861 and 902112 for the same application. It is a direct replacement option for select Buick Rendezvous, Chevrolet Impala, Chevrolet Monte Carlo, Pontiac Aztek, Pontiac Montana, Oldsmobile Alero, Oldsmobile Silhouette, and Pontiac Trans Sport models.

Common Cooling System Issues

• Air pockets remaining in the cooling system after coolant service
• Difficulty bleeding the radiator or coolant passages
• Cooling system service on vehicles using a bleeder screw design
• Replacement of a worn, damaged, or corroded bleeder valve
• Restoring proper coolant flow after maintenance on compatible GM applications

Installation Notes and Tips

Verify thread style and location before installation. Inspect the sealing surface and surrounding coolant components for wear, corrosion, or damage before reassembly. Because a gasket or seal is not included, reuse or replacement of the sealing component should be confirmed during service. Follow the vehicle service procedure for bleeding air from the cooling system after installation.

Quality Assurance

Four Seasons 86041 is an OEM-quality replacement part that meets or exceeds original equipment requirements for the listed applications. The metal construction supports dependable service in engine coolant systems.