Connection Gasket Cummins 3684338 | 3680574

High-Performance Sealing with Cummins 3684338 Connection Gasket

The Cummins 3684338 Connection Gasket is a heavy-duty sealing component engineered specifically for 15-liter ISX and QSX diesel engines (including EPA13 configurations). This multi-purpose connection gasket plays a critical role in maintaining a leak-free seal, particularly at the water inlet connection and thermostat housing inlet, preventing coolant loss and ensuring optimal engine temperature regulation. This part is also available under the interchangeable part number: 3680574.

Manufactured from premium-quality materials using advanced production technologies, this gasket is designed to withstand extreme operating temperatures and high-pressure environments. It provides the necessary rigidity for radial strength, making it highly resistant to wear and tear while ensuring a snug, precise fit during installation.

Features & Benefits

• Superior Temperature Resistance: Built to endure the extreme thermal cycles of heavy-duty diesel engines without degrading.
• Snug Fitment & Easy Installation: Precision-engineered to match exact engine specifications, allowing for quick and straightforward in-field replacements.
• Excellent Sealing Capabilities: Designed by industry experts to efficiently seal minor surface irregularities and prevent critical fluid leaks.
• Proven Durability: Tested in real-world environments to deliver market-leading performance and meet strict industry standards.

Applications & Compatibility

This connection gasket is primarily used on Cummins 15-liter ISX and QSX series engines. It is commonly utilized as a thermostat housing inlet gasket (lower water manifold to block) and water inlet connection gasket, ensuring a secure seal within the cooling and water systems.

Cross-Reference / Interchange Part Numbers

This part replaces / is interchangeable with the following part numbers:

• 3684338
• 3680574