Gates 34308 Green Stripe Heavy-Duty Engine Coolant Thermostat 180°F

The Gates 34308 Green Stripe Heavy-Duty Engine Coolant Thermostat is engineered specifically for demanding applications in heavy-duty trucks, buses, tractors, and industrial equipment. This professional-grade thermostat opens at 180°F (82°C) to provide precise engine temperature regulation and optimal cooling system performance.

Heavy-Duty Construction:

• Heavy-gauge brass and stainless steel construction delivers superior corrosion resistance for long-lasting durability in harsh operating environments
• Temperature-sensitive heat motor provides consistent valve response for smooth performance and precise engine cooling
• Quality-controlled factory calibration ensures accurate opening and closing regardless of pressure changes
• Designed to withstand extreme noise, vibration, and harshness found under the hood of commercial vehicles

Complete Installation Kit:

• Includes seal gasket for proper installation and leak-free operation
• Jiggle pin for air venting ensures complete coolant system purging during fill
• OE-equivalent design makes installation straightforward and reliable

Performance Benefits:

• Reduces engine wear and extends component life through consistent temperature control
• Increases fuel efficiency by maintaining optimal operating temperature
• Accelerates engine warm-up for improved cold-weather usability
• Diminishes harmful emissions through better combustion efficiency
• Prevents engine overheating and costly damage

OEM Cross-References: Replaces Cummins 5282375, 5273379, 4992231, 4941322; NAPA 476180; Stant 15218; CARQUEST 30448

Commonly used in Freightliner, Kenworth, Peterbilt, International, Mack, Volvo, Western Star, and other commercial vehicles equipped with Cummins diesel engines. Gates has been an industry leader in automotive cooling and engine management components for over 100 years, delivering OE-quality parts trusted by professionals worldwide.