Gates 33058 Engine Coolant Thermostat

Gates OE Type Thermostat 33058

The Gates OE Type Thermostat 33058 provides precise engine temperature control for classic Cadillac applications. Built with stainless steel and copper, it delivers an OEM-equivalent fit and leak-resistant sealing for dependable coolant regulation.

Key Features

• OE Type Thermostat for factory-style cooling system performance
• Start to open temperature: 180°F / 82°C
• Bottom by-pass design for the listed Cadillac cooling systems
• Stainless steel and copper construction
• Sealing flange outside diameter: 2.13 in.
• Height: 1.77 in.; height between flanges: 1.06 in.
• OE performance comparison rating

Product Details

Gates OE Type Thermostats are built for accurate temperature regulation and a secure fit in the cooling system. Part number 33058 is a direct-fit style engine coolant thermostat for select Cadillac DeVille, Eldorado, Seville, Fleetwood, and Commercial Chassis applications. The 180-degree opening point supports stable operating temperature control in vehicles that require an OE temperature thermostat, including 1968-1984 Cadillac DeVille and 1970-1978 Cadillac Eldorado models.

This part cross-references Four Seasons 33058 and Motorad 332-180 for the same application.

What It Helps Address

• Engine running too cool or too warm
• Delayed coolant flow regulation after startup
• Temperature fluctuation in the cooling system
• Thermostat replacement on classic Cadillac cooling service
• Fitment issues from non-OE-style thermostat dimensions

Installation Notes and Tips

Verify the thermostat orientation and bottom by-pass design before installation. Clean the housing mating surfaces thoroughly and inspect the coolant system for contamination, corrosion, or damaged sealing surfaces. This thermostat does not include an installation tool, gasket, seals, or jiggle pin/check valve.

Compatible With 1968-1984 Cadillac Commercial Chassis, N/A; 1968-1984 Cadillac Fleetwood, N/A; 1968-1981 Cadillac DeVille, N/A; 1970-1978 Cadillac Eldorado, N/A; 1980-1981 Cadillac Eldorado, N/A; 1980-1981 Cadillac Seville, N/A.

Quality Assurance

Gates engineers this OE Type Thermostat line for precise temperature control and OEM-equivalent fit. The 33058 is built to match the listed application requirements for dependable cooling system service.