Stant 14228 Engine Coolant Thermostat

OE Type Thermostat for GM Cooling Systems

Stant 14228 is an OE Type Thermostat built for precise engine coolant control in a wide range of Cadillac, Buick, Pontiac, and Oldsmobile applications. This 180-degree thermostat uses an original equipment design with a stainless steel assembly for smooth operation and durable, long-term service.

The Stant OE Type Thermostat line focuses on direct-fit cooling system replacement parts that match factory-style operation. For drivers searching for a 180 degree thermostat for Cadillac DeVille, Cadillac Seville, or Buick Lucerne applications, part number 14228 provides the OE temperature specification and seal-included design called out in the fitment data.

Key Features

• 180 Degrees Fahrenheit thermostat opening temperature
• OE Type Thermostat design for factory-style coolant regulation
• Stainless steel assembly for consistent movement and smooth performance
• Durable material construction for long service life
• Seal included for the listed applications
• Bypass plate diameter: 1.375 in.
• Flange diameter with seal: 2.28 in.; without seal: 2.125 in.
• Height from flange to bottom: 1.975 in.; height from flange to top of bridge: 0.75 in.

Detailed Description

Stant 14228 is an engine coolant thermostat engineered to match OE temperature control requirements across multiple GM platforms. It is listed for 2006-2011 Buick Lucerne, 2006-2011 Cadillac DTS, 2005-2010 Cadillac STS, 2004-2009 Cadillac SRX, 2004-2009 Cadillac XLR, 1994-2005 Cadillac DeVille, 2004-2005 Pontiac Bonneville, 1993-2004 Cadillac Seville, 2001-2003 Oldsmobile Aurora, 1995-1999 Oldsmobile Aurora, 1993-2002 Cadillac Eldorado, and 1993 Cadillac Allante. If you need a 180 degree thermostat for Cadillac DTS or a thermostat for Buick Lucerne cooling system service, this part number 14228 matches the listed OE temperature and fitment notes.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

• Engine running too cool or not reaching normal operating temperature
• Temperature fluctuations caused by a worn thermostat
• Delayed cabin heat from improper coolant regulation
• Cooling system service on OE-temperature GM applications
• Replacement of a thermostat with degraded opening performance

Installation Notes and Tips

Verify the thermostat housing, seal surface, and coolant passages before installation. Match the 180-degree temperature rating and flange dimensions to the removed part, and confirm the seal is seated correctly during assembly. After installation, refill the cooling system with the correct coolant and bleed air from the system according to the vehicle service procedure.

Quality Assurance

Stant builds this OE Type Thermostat with an original equipment design and a stainless steel assembly for stable operation. The durable construction is intended to support long service life in the listed Cadillac, Buick, Pontiac, and Oldsmobile applications.