Four Seasons 86348 Engine Coolant Water Inlet

Engine Coolant Water Inlet for Ford and Lincoln

Four Seasons 86348 is an engine coolant water inlet built for cooling system service on select Ford and Lincoln applications. It features a thermoplastic housing, an included gasket or seal, and a design without a thermostat for direct replacement of the inlet assembly.

Key Features

• Engine coolant water inlet for cooling system repair
• Thermoplastic construction
• Gasket or seal included
• Style: without thermostat
• Thermostat not included
• Inlet diameter: 1.48 in.
• Overall height: 3.980 in.
• Mounting flange width: 0.387 in.

Product Details

Four Seasons Water Inlet 86348 is part of the brand’s Water Inlet line, focused on engine coolant components for cooling system service. Four Seasons draws on more than 50 years of mobile A/C and thermal management experience, and this inlet is engineered and tested for dependable operation in the vehicle’s coolant circuit. This part cross-references Ford OE-style numbers such as CH4821 and HL3Z8592A for the same application. It fits 2017-2025 Ford F-150, 2018-2025 Ford Expedition, and 2018-2025 Lincoln Navigator.

Common Cooling System Issues It Can Address

• Cracked or leaking coolant inlet housing
• Failed seal at the inlet connection
• Coolant seepage around the thermostat housing area
• Restricted coolant flow caused by a damaged inlet assembly
• Service replacement for worn plastic coolant components

Installation Notes and Tips

Verify the inlet diameter, mounting flange width, and overall height against the original part before installation. Inspect the mating surfaces carefully and replace any damaged seals or residue before assembly. Because this unit is supplied without a thermostat, transfer or replace the thermostat separately only if your vehicle application requires one.

Quality Assurance

Four Seasons states that its products are engineered and tested for years of trouble-free operation. The brand backs this part with its long-standing experience in mobile A/C and thermal management components.