PPE 119000500 Engine Coolant Thermostat Housing | 2001-2007 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Features:

• Fits 2001–2007 GM 6.6L Duramax engines
• Direct replacement for OEM thermostat housing
• Made from high-strength cast aluminum
• Resists corrosion and long-term wear
• Improves reliability of the cooling system
• Prevents coolant blockage and overheating
• Compatible with factory thermostat components
• Works with OEM temperature sensor and cover
• Ideal upgrade for aging or damaged housing
• Durable construction for extended service life
• Backed by a 1 year limited warranty
• Maintains OEM fitment and function

Upgrade Your Cooling System With Confidence And Strength

If you're dealing with an aging Duramax, chances are the factory thermostat housing is showing its age too. These OEM components are notorious for corroding over time, leading to blocked passages and reduced cooling efficiency. That’s where the PPE Engine Coolant Thermostat Housing comes in. Designed as a direct replacement for your 2001–2007 6.6L Duramax, this high-strength cast aluminum upgrade solves those common failure points for good. It bolts right up to the OEM cylinder heads and works seamlessly with your factory thermostat, temperature sensor, and cover. Whether you’re restoring an old workhorse or keeping your weekend tow rig in top shape, this is a small investment that makes a big impact on long-term reliability. With improved durability and better resistance to corrosion, you’ll be back on the road with peace of mind knowing your cooling system is up to the task. This is one of those upgrades that just makes sense for any Duramax owner.

Precision Fit Housing Built To Handle Harsh Conditions

The PPE 119000500 Engine Coolant Thermostat Housing is a robust and direct-fit solution for 2001–2007 GM Silverado and Sierra HD trucks equipped with the 6.6L Duramax engine. Crafted from high-strength cast aluminum, this housing is a major step up from the OEM version, which is often vulnerable to corrosion and premature failure. Designed to maintain full compatibility with your factory thermostats, temperature sensor, and thermostat cover, this replacement offers a seamless installation without the need for modifications. Its precise engineering ensures a leak-free seal and optimal coolant flow, which is critical for maintaining engine temperature under heavy load or extended driving conditions. The design helps eliminate coolant restrictions that can occur from rusted or clogged OEM units, keeping your cooling system operating at peak efficiency. Ideal for stock or mildly modified engines, this part is a reliable upgrade that adds long-term durability without compromising fitment. Backed by a 1-year limited warranty, it's a smart preventive measure for anyone maintaining or rebuilding their Duramax-powered truck.

Fits: 2001, 2002, 2003, 2004, 2005, 2006, 2007 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Notes:

• Fits 2001–2007 GM 6.6L Duramax engines
• Replaces factory thermostat housing prone to corrosion
• Constructed from high-strength cast aluminum
• Direct bolt-on fit to OEM cylinder heads
• Compatible with factory thermostats and temperature sensor
• Also works with stock thermostat cover
• Prevents cooling system blockage and flow restriction
• Improves long-term cooling system reliability
• Ideal for aging or high-mileage Duramax engines
• Includes 1-year limited warranty from PPE