Motorad 5268-170 Engine Coolant Thermostat

Overview of Motorad UltraStat Engine Coolant Thermostat 5268-170

The Motorad UltraStat 5268-170 engine coolant thermostat is designed to regulate engine temperature efficiently for select Infiniti, Mercury, and Nissan vehicles. This thermostat operates at 170 degrees Fahrenheit, ensuring optimal engine performance and temperature control.

• Sealing flange outside diameter: 2.52 inches
• Bypass diameter: 0.98 inches
• Bypass length: 1.88 inches
• Flange thickness: 0.05 inches
• Includes jiggle pin weep hole for pressure relief
• Temperature rating: 170°F
• No gasket or seal included
• No installation tool included

Detailed Product Description

The Motorad UltraStat 5268-170 thermostat is engineered to maintain precise engine coolant flow and temperature for vehicles such as the Nissan 300ZX, Infiniti Q45, and Mercury Villager. Its 2.52-inch sealing flange outside diameter and 0.05-inch flange thickness provide a secure fit within the cooling system housing. The thermostat features a 0.98-inch bypass diameter and a 1.88-inch bypass length, allowing controlled coolant circulation during engine warm-up phases. The integrated jiggle pin weep hole helps release trapped air and prevent pressure buildup, contributing to consistent engine temperature regulation. This thermostat is calibrated to open at 170 degrees Fahrenheit, matching the cooling requirements of compatible Nissan, Infiniti, and Mercury models.

About the UltraStat Product Line

The UltraStat line from Motorad focuses on precision-engineered thermostats designed for reliable temperature control in automotive cooling systems. The UltraStat 5268-170 thermostat exemplifies this approach by combining accurate temperature calibration with durable construction, suitable for a range of Nissan, Infiniti, and Mercury vehicles. This product line emphasizes fitment accuracy and functional design to support engine efficiency and longevity.

Applications and Common Issues Addressed

• Prevents engine overheating by regulating coolant flow
• Helps avoid engine damage caused by temperature fluctuations
• Reduces coolant bypass issues during engine warm-up
• Minimizes air pockets in the cooling system with jiggle pin weep hole
• Supports consistent engine performance in Nissan 300ZX, Infiniti Q45, and Mercury Villager

Installation Notes and Tips

• Ensure the sealing flange matches the housing dimensions (2.52 inches outside diameter)
• Check for proper orientation of the jiggle pin weep hole during installation
• Replace any worn gaskets or seals separately, as none are included
• Verify thermostat opens at 170°F to match engine specifications
• Use appropriate tools for installation; no installation tool is included with this part

Quality Assurance and Warranty

Motorad UltraStat thermostats are manufactured to meet OEM specifications for fit and function. While no specific warranty information is provided here, Motorad products typically undergo rigorous quality control to ensure durability and reliable performance in compatible Infiniti, Mercury, and Nissan vehicles. Always consult product documentation or supplier details for warranty terms.