Motorad 426-190 Engine Coolant Thermostat

Overview of Motorad Standard Engine Coolant Thermostat 426-190

The Motorad Standard Engine Coolant Thermostat 426-190 is designed for reliable temperature regulation in Dodge Ram 2500 and 3500 models. This thermostat ensures your engine maintains optimal operating temperature by opening at 192 degrees Fahrenheit, helping to prevent overheating and improve engine efficiency.

• Sealing flange outside diameter: 2.28 inches
• Height between flanges: 1.32 inches
• Overall height: 1.88 inches
• Standard type thermostat with jiggle pin weep hole
• Includes rubber gasket with O-ring seal
• Bypass diameter: 1.14 inches; bypass length: 1.10 inches
• Flange thickness: 0.05 inches
• Start to open temperature: 192°F
• Compatible with Dodge Ram 2500, 3500, and 4000 models

Detailed Product Description

This Motorad Standard thermostat (part number 426-190) is engineered to maintain precise engine coolant temperature by opening at 192 degrees Fahrenheit. The thermostat features a sealing flange with a 2.28-inch outside diameter and a height between flanges of 1.32 inches, ensuring a secure fit within the cooling system. The included rubber gasket with an O-ring seal provides a reliable seal to prevent coolant leaks. Additionally, the jiggle pin weep hole allows trapped air to escape, reducing the risk of air pockets that can affect cooling performance. The bypass diameter of 1.14 inches and bypass length of 1.10 inches facilitate proper coolant flow during thermostat operation. This part is specifically designed for Dodge Ram 2500, 3500, and 4000 models, making it a precise replacement for maintaining engine temperature control.

About the Motorad Standard Product Line

The Motorad Standard line offers dependable engine cooling components designed to meet OEM specifications. This product line focuses on delivering quality and fitment accuracy for a range of vehicles, including heavy-duty trucks like the Dodge Ram series. The Standard line balances performance and durability, providing essential cooling system parts such as thermostats that maintain engine temperature within optimal ranges.

Common Applications and Issues Addressed

• Prevents engine overheating by regulating coolant flow
• Eliminates coolant leaks with included rubber gasket and O-ring seal
• Reduces air pockets in the cooling system via jiggle pin weep hole
• Ensures proper engine warm-up time by opening at 192°F
• Maintains consistent engine temperature for Dodge Ram 2500 and 3500 models

Installation Notes and Tips

Installation of the Motorad 426-190 thermostat requires removal of the existing thermostat housing. Ensure the sealing surfaces are clean and free of debris before installing the new thermostat and gasket. The included rubber gasket should be properly seated to prevent leaks. Note that no installation tool is included, so use appropriate hand tools to avoid damage. Verify the thermostat orientation matches OEM specifications, with the jiggle pin positioned to allow air bleed. After installation, refill the cooling system and bleed air to prevent overheating.

Quality Assurance and Warranty

Motorad Standard thermostats are manufactured to meet industry standards for durability and performance. The 426-190 thermostat includes a rubber gasket and O-ring seal to ensure leak-free operation. While specific warranty details are not provided, Motorad products typically adhere to quality control processes to support reliable engine cooling system function in Dodge Ram 2500 and 3500 vehicles.