Heavy Duty 180-degree Thermostat, 66-77 Ford Bronco SKU: 5043

Early Bronco Thermostat | 180-Degree

Keep your engine running cool and consistent with this heavy-duty 180-degree thermostat for your Early Bronco. Whether you’re navigating rugged trails or daily driving around town, proper temperature control is critical for engine health, performance, and longevity.

This thermostat opens at 180°F, allowing coolant to flow through the radiator and regulate engine heat before it climbs too high. It strikes the perfect balance between optimal operating temperature and fast warm-ups—helping your Bronco run smooth, avoid overheating, and maintain solid fuel efficiency. It’s a smart upgrade or replacement part for any V8 or inline 6 Early Bronco running a factory or upgraded cooling system.

• 180-Degree Operation: Opens at 180°F to maintain a stable and efficient engine temperature

• Engine Protection: Helps prevent overheating under heavy loads, off-road driving, or summer heat

• Fast Warm-Ups: Brings your engine up to temp quickly, reducing cold-start wear and poor idle

• Durable Construction: Built to withstand tough conditions in both daily driving and trail use

• Direct Fit: Designed to drop into factory-style housings—no mods or adapters needed

• Fits V8 and I6 Engines: Compatible with small block Ford engines commonly found in 1966–77 Broncos

Take control of your Bronco’s engine temp - this 180-degree thermostat delivers fast warm-up and consistent cooling for trails, traffic, and everything between.