Cummins Oil Seal 3900709 – Reliable Sealing for Engine Protection
The Cummins Oil Seal 3900709 is a genuine sealing component designed to keep lubricating oil contained within the engine. By preventing leaks, it protects vital moving parts from damage and ensures smooth, efficient operation. Built with high-quality, heat-resistant materials, this oil seal maintains performance even under pressure and temperature changes. Choosing Cummins genuine parts gives you confidence in fit, durability, and long-term reliability.
🔩 Specifications
- Part number: 3900709
- Genuine Cummins oil seal
- Made from durable, heat- and wear-resistant elastomer
- Meets OEM standards for sealing strength and service life
⭐ Key Features
- Prevents oil leakage from engine systems
- Protects bearings and rotating components
- Withstands pressure and thermal cycling
- Easy installation with OEM-precision fit
⚙️ Technical Insights
The 3900709 oil seal plays a vital role in engine health. Because it maintains a tight barrier, it keeps oil inside lubrication circuits while blocking contaminants from entering. In addition, its flexible design adapts to shaft rotation without losing sealing strength. Moreover, the seal resists cracking, shrinking, and deformation during extended service. As a result, engines equipped with this oil seal maintain proper lubrication, reducing friction, wear, and costly repairs.
🛠 Application Scenarios
This oil seal is widely used across Cummins diesel engines powering trucks, buses, construction equipment, and marine vessels. Furthermore, it is suitable for scheduled service or complete rebuilds. Whether your engine operates in transport, industry, or offshore environments, the 3900709 oil seal ensures dependable protection for critical parts.
📦 Availability
The Cummins Oil Seal 3900709 is available and ready for global shipping. To confirm correct fit with your Cummins parts setup, please provide your engine serial number (ESN). Our support team will verify compatibility and arrange safe, timely delivery of your Cummins genuine parts.
