Cometic Gasket Thermostat Gasket

1999–2013 Jeep Grand Cherokee, Dodge Dakota, Dodge Durango, Dodge Ram 1500, Ram 1500, Ram Dakota 4.7L V8

Part #: C15168

Overview

The Cometic Gasket Thermostat Gasket is a precision-engineered replacement part designed to provide a reliable seal for the thermostat housing on select Jeep, Dodge, and Ram vehicles equipped with the 4.7L V8 engine from 1999 through 2013. Crafted for both professional mechanics and automotive enthusiasts, this gasket plays a critical role in maintaining the integrity of the engine cooling system by preventing coolant leaks and ensuring proper thermostat function.

By maintaining a secure seal, this gasket helps regulate engine temperature effectively, reducing the risk of overheating and promoting optimal engine performance. Whether you are performing routine maintenance or addressing a cooling system repair, the Cometic Thermostat Gasket offers durable, OEM-quality reliability that keeps your vehicle running smoothly.

Key Features

Engineered to meet and exceed OEM standards, the Cometic Thermostat Gasket delivers dependable performance and precise fitment across multiple vehicle models. Key features include:

• Soft durometer molded rubber precisely formed to match the thermostat housing sealing surface
• Bonded to steel or plastic carriers for enhanced rigidity and reusability
• OEM-quality fitment ensures a perfect seal and straightforward installation
• Compatible with Jeep Grand Cherokee (1999–2010), Dodge Dakota (2000–2010), Dodge Durango (2000–2009), Dodge Ram 1500 (2002–2010), Ram 1500 (2011–2013), and Ram Dakota (2011)
• Resistant to heat, coolant chemicals, and pressure fluctuations within the cooling system
• Reduces risk of coolant leaks and engine overheating
• Durable construction extends gasket life and reduces maintenance frequency
• Manufactured by Cometic Gasket, a trusted name in high-performance sealing solutions

Construction & Design

This thermostat gasket features Cometic’s signature molded rubber technology, utilizing a soft durometer rubber compound that conforms precisely to the thermostat housing sealing cavity. The gasket is bonded to a steel or plastic carrier, providing additional structural support and ensuring consistent sealing pressure. This design enhances gasket reusability and prevents deformation under thermal cycling and mechanical stress.

The materials are carefully selected to withstand the harsh environment of the engine cooling system, including exposure to high temperatures, coolant fluids, and pressure variations. This results in a gasket that maintains its integrity over time, minimizing leaks and the need for frequent replacements.

Installation & Fitment

The Cometic Thermostat Gasket is designed as a direct OEM replacement, fitting precisely without any modifications required. Installation is straightforward: remove the old gasket, thoroughly clean the sealing surfaces, and install the new gasket to ensure a secure, leak-free seal. Its exact fitment helps maintain the cooling system’s efficiency and prevents coolant loss.

This gasket is compatible with the following vehicles equipped with the 4.7L V8 engine:

• Jeep Grand Cherokee (1999–2010)
• Dodge Dakota (2000–2010)
• Dodge Durango (2000–2009)
• Dodge Ram 1500 (2002–2010)
• Ram 1500 (2011–2013)
• Ram Dakota (2011)
• Jeep Commander (2006–2009)

What's Included

• One Cometic Molded Rubber Thermostat Gasket (Part # C15168)

Ideal For

This thermostat gasket is ideal for vehicle owners, mechanics, and performance enthusiasts seeking a reliable, OEM-quality replacement part for their Jeep, Dodge, or Ram cooling system. It is perfect for those performing routine maintenance, cooling system repairs, or upgrades to ensure optimal engine temperature regulation and prevent coolant leaks, helping to maintain engine efficiency and longevity.

Cometic Gasket supplies high-performance sealing solutions for motorsports and high-stress engine builds, with a strong focus on modern gasket materials like multi-layer steel (MLS) head gaskets. Their catalog spans head gaskets and complete gasket sets across a wide range of applications, helping builders maintain reliable combustion and fluid sealing under extreme pressure and heat.