185°F & 180°F Thermostat Front & Rear Kit Pair Fit GM Pickup Duramax GMC 6.6L
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Compatible Models
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185°F & 180°F Thermostat Front & Rear Kit Pair for GM Pickup Duramax GMC 6.6L
This 185°F and 180°F thermostat front and rear kit pair is a matched set for GM pickup and GMC Duramax 6.6L diesel engines, providing both thermostats for complete coolant flow control.
Overview
This thermostat front and rear kit pair includes one 185°F and one 180°F thermostat, the correct combination for Duramax 6.6L engines in GM pickups and GMC trucks. It allows the engine to reach optimal operating temperature quickly and maintain stable heat under load, making it a reliable direct replacement for worn factory units.
Built For Performance
- Matched 185°F and 180°F opening temperatures for proper Duramax cooling system flow
- Includes both front and rear thermostats in one convenient kit pair
- High-quality construction resists sticking and corrosion
- Engineered for consistent performance across heavy-duty driving conditions
- Drop-in replacement for GM pickup and GMC 6.6L diesel applications
Fits These Machines
- for GM Pickup Duramax 6.6L
- for GMC Sierra Duramax 6.6L
- for Chevrolet Silverado Duramax 6.6L
On-The-Job Use
- Ideal for routine cooling system service on towing and hauling vehicles
- Works in extreme hot or cold environments where thermostat response is critical
- Replaces both thermostats at once to ensure balanced coolant circulation
Specs At A Glance
| Part Number(s) | Front and rear kit pair |
| Opening Temperature | 185°F (front), 180°F (rear) |
| Type | Thermostat kit pair |
| Engine | Duramax 6.6L V8 |
Good To Know
Q: What is the benefit of different temperature thermostats in the front and rear? A: The Duramax 6.6L uses a 185°F front thermostat and 180°F rear thermostat to manage coolant flow across the engine block, preventing hot spots and ensuring even warm-up.
Q: Can I use this kit pair for a daily driver as well as a work truck? A: Yes, it performs well in both daily driving and heavy-duty applications, keeping the engine at a consistent temperature in any condition.
Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.