Stant 13889 Engine Coolant Thermostat

OE Type Thermostat for 195 Degree Cooling

The Stant OE Type Thermostat Part Number 13889 is an engine coolant thermostat built to match original equipment design requirements. It opens at 195 degrees Fahrenheit and uses a stainless steel assembly for smooth, consistent operation in the cooling system.

Built for select Chevrolet Cavalier, Chevrolet Corsica, Pontiac Tempest, Buick Skyhawk, and Oldsmobile Firenza applications, this thermostat is a direct-fit cooling service part for 1987-1991 model years listed below. The Stant 13889 is also a replacement for part number 45889 in the applications shown.

Key Features

• OE Type Thermostat designed to follow original equipment specifications
• 195 degrees Fahrenheit temperature rating
• Durable material construction for long service life
• Stainless steel assembly engineered for smooth performance
• Seal included for the listed applications
• Stant 13889 thermostat for cooling system maintenance and repair

Detailed Product Overview

Stant OE Type Thermostat Part Number 13889 is engineered for drivers servicing older GM compact and midsize platforms that require a 195 degree engine coolant thermostat. With a bypass plate diameter of 1.1 inches, a flange diameter of 1.9 inches with seal, a flange diameter of 1.72 inches without seal, and a height of 1.46 inches from flange to bottom, this thermostat is built around the dimensions needed for proper cooling system fitment. The 0.8 inch height from flange to top of bridge supports OE-style packaging and operation.

This thermostat is listed for 1987-1991 Chevrolet Cavalier, 1987-1991 Chevrolet Corsica, 1987-1991 Pontiac Tempest, 1987-1989 Buick Skyhawk, and 1987-1988 Oldsmobile Firenza. If you are searching for a 195 degree thermostat for Chevrolet Cavalier or a replacement thermostat for Pontiac Tempest cooling service, the Stant 13889 matches the applications shown.

This part cross-references replacement number 45889 for the same application.

What It Helps Address

• Engine running too cool or too warm due to thermostat wear
• Delayed coolant flow control during warm-up
• Cooling system temperature inconsistency
• Replacement needs for a leaking or sticking thermostat
• Service on OE-style cooling system repairs for listed GM vehicles

Installation Notes and Tips

Verify the 195 degree temperature rating and compare the flange and bypass dimensions before installation. Inspect the thermostat housing and sealing surfaces for corrosion, debris, or gasket residue, and confirm the seal seats correctly in the application. Follow the vehicle service procedure for coolant refill and air bleeding after installation.

Compatible With 1987-1991 Chevrolet Cavalier, 1987-1991 Chevrolet Corsica, 1987-1991 Pontiac Tempest, 1987-1989 Buick Skyhawk, and 1987-1988 Oldsmobile Firenza as listed in the fitment data. For Chevrolet Cavalier and Chevrolet Corsica cooling service, Stant 13889 is specified for the applications shown.

Quality Assurance

Stant OE Type Thermostat products are built to original equipment design standards using durable materials and a stainless steel assembly for consistent operation. Part Number 13889 is specified as an OE temperature thermostat for the listed vehicles and applications.