Calorstat TH1476.87J Engine Coolant Thermostat

Engine Coolant Thermostat for Ford and Mercedes-Benz

Calorstat TH1476.87J is a standard engine coolant thermostat built for precise coolant flow control and stable operating temperature. It includes a gasket/seal and an O-ring seal type, making it a direct replacement choice for a wide range of Ford Super Duty, E-Series, F-150, Navigator, and select Mercedes-Benz applications.

Key Features

• Standard engine coolant thermostat for temperature regulation
• Starts to open at 188.0 degrees for controlled warm-up and cooling response
• Gasket or seal included for installation convenience
• Jiggle pin weep hole for air bleeding during fill and service
• O-ring seal material in rubber for sealing performance
• Sealing flange outside diameter: 2.63
• Valve-seat diameter: 67.0
• By-pass valve diameter: 43.0
• Height between flanges: 1.02
• Height shoulder: 7.5
• Height, by-pass side: 26.0

Detailed Description

Calorstat TH1476.87J is engineered as an OE-style engine coolant thermostat for vehicles that need consistent coolant routing and temperature management. This part number TH1476.87J cross-references Gates 33079 and Stant 48019 for the same application. It is listed across many Ford truck and van platforms, including the Ford F-150, Ford F-250 Super Duty, Ford F-350 Super Duty, Ford E-150, Ford E-250, Ford E-350 Super Duty, Ford Excursion, and Lincoln Navigator, along with select Mercedes-Benz models such as the 300E and E320.

What It Helps Address

• Engine running too cool or too warm
• Delayed cabin heat during cold starts
• Temperature fluctuation from a sticking thermostat
• Coolant flow issues after thermostat wear
• Sealing problems at the thermostat housing interface

Installation Notes and Tips

Verify the thermostat housing style, flange dimensions, and opening temperature before installation. Clean the mating surfaces thoroughly and inspect the housing for corrosion or distortion before fitting the new seal. Proper coolant fill and air bleeding are important on Ford F-150, Ford Super Duty, and Mercedes-Benz cooling systems, especially where the jiggle pin weep hole is used to help purge trapped air.

Compatible With 1997-2014 Ford F-150, 1999-2020 Ford F-250 Super Duty, 1999-2020 Ford F-350 Super Duty, 1998-2014 Lincoln Navigator, and select Mercedes-Benz applications including 1986-1993 300E and 1994-1997 E320.

Quality Assurance

Calorstat is an established thermostat brand with OE-supplier coverage in the aftermarket. TH1476.87J is built to match the listed fitment and dimensional requirements for the specified applications.