Stant 13889 Engine Coolant Thermostat

Reliable Engine Coolant Thermostat for Buick and Chevrolet Models

The Stant OE Type Thermostat 13889 is engineered to maintain optimal engine temperature for select Buick, Chevrolet, Oldsmobile, and Pontiac vehicles. Designed specifically for models like the Cavalier, Corsica, Firenza, Skyhawk, and Tempest, this thermostat ensures precise temperature regulation to support engine performance and longevity.

• Bypass Plate Diameter: 1.1 inches
• Flange Diameter with Seal: 1.9 inches
• Flange Diameter without Seal: 1.72 inches
• Height from Flange to Bottom: 1.46 inches
• Height from Flange to Top of Bridge: 0.8 inches
• Temperature Rating: 195 degrees Fahrenheit
• Freight Class: 70

About the Stant OE Type Thermostat Product Line

The OE Type Thermostat line by Stant is designed to meet original equipment specifications, providing reliable temperature control and fitment for a range of domestic vehicles. This product line focuses on delivering thermostats that match factory dimensions and temperature ratings, ensuring compatibility and consistent engine operation. The 13889 thermostat is part of this line, offering precise temperature regulation at 195 degrees Fahrenheit for the specified vehicle models.

Detailed Product Description and Specifications

The Stant 13889 engine coolant thermostat features a 1.1-inch bypass plate diameter and flange diameters of 1.9 inches with seal and 1.72 inches without seal. Its height measurements include 1.46 inches from flange to bottom and 0.8 inches from flange to top of the bridge, ensuring proper fitment within the cooling system. Rated to open at 195 degrees Fahrenheit, this thermostat helps maintain the engine within the optimal temperature range, preventing overheating and promoting efficient fuel combustion.

Common Applications and Problem Resolution

• Maintains proper engine operating temperature in Buick Cavalier and Chevrolet Corsica
• Prevents engine overheating in Oldsmobile Firenza and Pontiac Skyhawk
• Ensures consistent coolant flow for Pontiac Tempest models
• Replaces faulty or stuck thermostats causing temperature fluctuations
• Restores proper engine warm-up time and prevents excessive wear

Installation Notes and Tips

When installing the Stant 13889 thermostat, ensure the flange and bypass plate dimensions match the vehicle’s housing specifications. Proper sealing is critical; verify the flange diameter with or without the seal to avoid leaks. It is recommended to drain the coolant system before removal and refill with fresh coolant after installation. Follow vehicle-specific service manual instructions for torque specifications and thermostat orientation.

Quality Assurance and Warranty Information

Stant OE Type Thermostats are manufactured to meet or exceed OEM standards, ensuring durability and reliable performance. The 13889 thermostat undergoes rigorous quality control to maintain consistent temperature regulation. While specific warranty details may vary, Stant products typically include a limited warranty against defects in material and workmanship.