Calorstat TH1419.88 Engine Coolant Thermostat

Engine Coolant Thermostat for OE-Style Cooling Control

Calorstat TH1419.88 is a standard engine coolant thermostat built for precise coolant flow regulation and stable operating temperature. It opens at 190°F (88°C) and is a direct-fit cooling system service part for select Saab, Land Rover, and Jaguar applications.

Use this thermostat when servicing a Saab 9-3 thermostat housing, replacing a thermostat in a Land Rover Discovery cooling system, or addressing temperature control concerns in Jaguar XJ12 and XJS models. The TH1419.88 part number is also referenced in OE-style cooling system catalogs for these applications.

Key Features

• Standard engine coolant thermostat for cooling system temperature regulation
• Start-to-open temperature: 190°F / 88°C
• Sealing flange outside diameter: 2.12 in.
• Height between flanges: 1.31 in.
• Gasket or seal not included
• Calorstat TH1419.88 for OE-style replacement service

Detailed Description

This Calorstat engine coolant thermostat is specified to begin opening at 190°F, helping maintain the engine’s designed operating range by controlling coolant circulation through the thermostat housing. It is a standard-type thermostat with a 2.12-inch sealing flange outside diameter and 1.31-inch height between flanges, making it a practical replacement for cooling system maintenance where the original thermostat has worn, stuck open, or stuck closed. The TH1419.88 part number is associated with Saab 9-3, Saab 900, Saab 9000, Land Rover Discovery, Jaguar XJ12, and Jaguar XJS fitments listed below.

This part cross-references OE-style numbers such as ERR2803 and TH1419.88J for the same application.

Vehicle Fitment

• Fits 1999-2003 Saab 9-3, N/A. Opening Temp: 88 C / 190 F
• Fits 1995-1998 Land Rover Discovery, N/A. OEM Recommended
• Fits 1998 Saab 900, N/A. Opening Temp: 88 C / 190 F
• Fits 1998 Saab 9000, N/A. Opening Temp: 88 C / 190 F
• Fits 1995-1996 Jaguar XJ12, N/A. Opening Temp: 88 C / 190 F
• Fits 1995 Jaguar XJS, N/A. Opening Temp: 88 C / 190 F

Installation Notes and Tips

• Confirm the thermostat orientation and housing fit before installation.
• Inspect the thermostat housing, mating surfaces, and coolant condition during service.
• Because no gasket or seal is included, reuse only if serviceable or replace with the correct sealing component.
• Bleed air from the cooling system after installation to help prevent temperature fluctuations.
• Verify the cooling system reaches and holds normal operating temperature after repair.

Quality Assurance

Calorstat cooling components are built for OE-style temperature control and application-specific fitment. TH1419.88 is listed for confirmed vehicle applications including Saab 9-3, Land Rover Discovery, and Jaguar XJ12/XJS service needs.