Four Seasons 85170 Engine Coolant Water Outlet

Engine Coolant Water Outlet for GM Applications

The Four Seasons Water Outlet 85170 is an engine coolant water outlet built for direct replacement use on a wide range of Chevrolet and GMC vehicles. It is an aluminum and cast iron outlet with the gasket or seal included, and it is supplied in a thermostat-free style for applications that use a separate thermostat housing arrangement.

Fits 1996-2014 Chevrolet Express 1500, N/A; Fits 1996-2006 Chevrolet Express 2500, N/A; Fits 1996-2005 Chevrolet Astro, N/A; Fits 1996-2005 Chevrolet Blazer, N/A; Fits 1999-2002 Chevrolet S10, N/A; Fits 1996-1999 Chevrolet P30, N/A; Fits 1996-1998 Chevrolet C1500, N/A; Fits 1996-1998 Chevrolet K1500, N/A; Fits 2001-2002 Chevrolet G30, N/A; Fits 1996-2014 GMC Savana 1500, N/A; Fits 1996-2006 GMC Savana 2500, N/A; Fits 2000-2002 GMC Savana 3500, N/A; Fits 1996-2005 GMC Safari, N/A; Fits 1999-2002 GMC Sonoma, N/A; Fits 1996-1999 GMC P3500, N/A; Fits 1996-1998 GMC C1500, N/A; Fits 1996-1998 GMC K1500, N/A; Fits 1996 GMC G3500, N/A; Fits 2012-2013 GMC Sierra 1500, N/A.

• Aluminum and cast iron construction for engine coolant service
• Gasket or seal included for the outlet connection
• Thermostat not included; use with separate thermostat setup
• Inlet diameter: 0.980 in.
• Meets or exceeds OEM requirements
• Four Seasons Water Outlet line replacement part number 85170

Product Details and Fitment

This engine coolant water outlet is used in cooling system service where the outlet housing routes coolant through the engine’s upper cooling passage. The Four Seasons Water Outlet 85170 is listed for Chevrolet Express, Astro, Blazer, S10, C/K truck applications, and GMC Savana, Safari, Sonoma, Sierra 1500, and related platforms across model years 1996 through 2014. It is also cross-referenced to Dorman - Conduct-Tite 85170 for the same application.

Key dimensions include a maximum height of 3.014 in., bolt hole center-to-center measurements of 3.17 in. and 3.250 in., and a mounting flange width of 0.418 in. The outlet is specified as an outlet type with a 0.980 in. inlet diameter, making it a direct-fit cooling system component for service on the listed GM vehicles.

Common Problems This Part Can Address

• Coolant leakage at the water outlet housing
• Cracked or corroded outlet material
• Damaged gasket or seal at the coolant connection
• Improper coolant routing through the engine cooling circuit
• Service replacement for a worn thermostat-free outlet assembly

Installation Notes and Quality Assurance

Before installation, verify the outlet style, bolt-hole spacing, and inlet diameter against the removed part to confirm proper alignment on the vehicle. Clean the mating surfaces thoroughly and inspect the surrounding cooling system components for wear, corrosion, or residue that could affect sealing. Because the thermostat is not included, reuse or replace the thermostat separately as required by the vehicle’s cooling system design.

Four Seasons lists this part as meeting or exceeding OEM requirements. The Water Outlet line is built for cooling-system replacement service on GM cars and trucks, including Chevrolet Express and GMC Savana applications, with fitment coverage extending across the 1996-2014 model years shown above.