Motorad 511-195 Engine Coolant Thermostat

Reliable Engine Coolant Thermostat for Select GM Vehicles

The Motorad Standard 511-195 engine coolant thermostat is designed to maintain optimal engine temperature for Buick, Chevrolet, Pontiac, and Saturn models. Engineered to meet precise specifications, this thermostat ensures efficient coolant flow and temperature regulation for vehicles like the Chevrolet Impala and Buick Lucerne.

• Sealing flange outside diameter: 1.72 inches
• Includes rubber gasket/seal for secure installation
• Jiggle pin weep hole for air bleeding
• Bypass diameter of 1.09 inches and bypass length of 1.89 inches
• Flange thickness of 0.05 inches
• Temperature rating of 195 degrees Fahrenheit
• One seal included, gasket material is rubber

About the Motorad Standard Product Line

The Motorad Standard line offers dependable replacement parts designed to meet original equipment specifications. The Standard engine coolant thermostat 511-195 provides consistent performance and durability, making it suitable for routine maintenance and repair on compatible GM vehicles. This product line focuses on quality and fitment accuracy without additional installation tools, catering to professional and experienced DIY mechanics.

Detailed Product Description

This engine coolant thermostat features a 195°F temperature rating, ensuring your engine reaches and maintains the correct operating temperature for optimal performance and emissions control. The included rubber gasket provides a reliable seal to prevent coolant leaks, while the jiggle pin weep hole allows trapped air to escape, reducing overheating risks. The precise bypass diameter and length support proper coolant circulation during warm-up phases, protecting your engine from thermal stress.

Compatible Vehicles and Common Applications

• Buick Lucerne and Terraza
• Chevrolet Impala, Malibu, Monte Carlo, Montana
• Pontiac G6, Relay
• Saturn Aura, Vue, and Uplander

• Resolves engine overheating issues
• Prevents coolant leaks from thermostat housing
• Improves engine warm-up time and efficiency
• Eliminates erratic temperature gauge readings
• Maintains proper coolant flow during engine operation

Installation Notes and Tips

The Motorad 511-195 thermostat does not include an installation tool, so ensure you have the appropriate tools for your vehicle’s thermostat housing. Before installation, verify the sealing flange diameter and gasket condition to ensure a proper fit. Replace the old gasket with the included rubber seal to prevent leaks. Bleed the cooling system after installation to remove air pockets, utilizing the jiggle pin weep hole feature.

Quality Assurance and Warranty

Motorad Standard thermostats are manufactured to meet or exceed OEM specifications for fit, form, and function. Each unit undergoes quality control inspections to ensure reliability. While specific warranty details are not provided, Motorad products typically carry a limited warranty against defects in materials and workmanship.