Cummins Expansion Plug C3901969, DCEC – Reliable Sealing for Engine Blocks
The Cummins Expansion Plug C3901969, manufactured by DCEC, is a small yet vital part that seals the casting holes in an engine block. It prevents coolant leaks, keeps system pressure stable, and helps the cooling system run efficiently. Because it is a Cummins genuine part, you get accurate fit, consistent quality, and dependable performance. This plug may be simple, but it plays an essential role in keeping your engine safe and reliable.
🔩 Specifications
- Part number: C3901969
- Genuine Cummins expansion plug
- Produced by DCEC
- Built from corrosion- and heat-resistant steel
- Meets OEM standards for fit and durability
⭐ Key Features
- Creates a tight seal in block passages
- Prevents coolant leaks under pressure
- Resists rust, heat, and repeated thermal cycles
- Provides easy OEM installation with accurate sizing
⚙️ Technical Insights
The C3901969 expansion plug works quietly but is vital for engine performance. Since it seals coolant passages in the block, it directs fluid only through designed channels. As a result, the engine maintains steady operating temperatures and avoids hot spots. In addition, the steel body holds shape under pressure and heat changes. Furthermore, using Cummins genuine parts from DCEC ensures long-lasting reliability, while aftermarket plugs often fail early and risk costly repairs.
🛠 Application Scenarios
This DCEC expansion plug is widely used in Cummins engines powering trucks, buses, construction equipment, and marine systems. Moreover, it fits both routine service and complete rebuilds. Whether your machine works on roads, at job sites, or offshore, the C3901969 plug provides the seal needed for consistent and dependable cooling system performance.
📦 Availability
The Cummins Expansion Plug C3901969 is in stock and ready for global shipping. To confirm correct fitment with your Cummins parts setup, please provide your engine serial number (ESN). Our support team will verify compatibility and arrange quick delivery of Cummins genuine parts, including DCEC parts, worldwide.
