Four Seasons 85149 Engine Coolant Water Inlet

Engine Coolant Water Inlet for Toyota Cooling Systems

Four Seasons 85149 is an aluminum engine coolant water inlet for select Toyota cooling system applications. It includes the gasket or seal and is built to meet or exceed OEM requirements for a direct-fit replacement on Tacoma, 4Runner, and T100 models.

The Four Seasons Water Inlet line focuses on engine coolant components that restore proper coolant routing at the thermostat housing area. This Four Seasons 85149 inlet is supplied without a thermostat and is specified as an inlet type part for vehicles that use a separate thermostat assembly.

Key Features

• Aluminum construction for corrosion-resistant cooling system service
• Gasket or seal included for installation at the mating surface
• Engine coolant water inlet, type: inlet
• Style: without thermostat
• Inlet diameter: 1.117 in.
• Maximum height: 3.062 in.
• Bolt hole center to bolt hole center: 2.96 in. and 3.000 in.
• Mounting flange width: 0.351 in.
• Meets or exceeds OEM specifications

Detailed Description

Four Seasons 85149 is an OE-style engine coolant water inlet designed for Toyota cooling system service where the inlet housing is serviced separately from the thermostat. The aluminum body supports consistent fitment and thermal durability, while the included gasket or seal helps create a proper seal at the coolant passage. This part number is commonly searched as a Toyota Tacoma water inlet, Toyota 4Runner coolant inlet, and Toyota T100 engine coolant water inlet.

Use Four Seasons 85149 when replacing a worn, corroded, or leaking coolant inlet on 1994-2004 Toyota applications. This part cross-references Dorman - First Stop W9005 for the same application.

Common Problems This Part Can Address

• Coolant seepage at the inlet housing
• Corrosion or pitting in the original aluminum housing
• Damaged sealing surface at the thermostat area
• Coolant loss from a cracked or warped inlet
• Service issues after thermostat housing disassembly

Installation Notes and Tips

• Fits 1995-2004 Toyota Tacoma, N/A
• Fits 1996-2000 Toyota 4Runner, N/A
• Fits 1994-1998 Toyota T100, N/A
• Confirm the inlet diameter and bolt-hole spacing against the original part before installation
• Inspect the mating surface and coolant passages for scale, corrosion, or old gasket material
• Since the thermostat is not included, transfer or replace the thermostat separately if service requires it
• Refill and bleed the cooling system according to Toyota service procedures after installation

Quality Assurance

Four Seasons 85149 is manufactured to meet or exceed OEM requirements for the listed Toyota applications. The part is built as a direct replacement coolant inlet for dependable fit and sealing performance in routine cooling system repair.