Cummins Oil Seal 4359961 – Reliable oil retention for stable and efficient engine operation

The Cummins Oil Seal 4359961 is designed to prevent oil leakage at critical rotating interfaces within the engine. As a fundamental sealing element in many Cummins parts systems, this oil seal helps maintain proper lubrication while keeping contaminants out. Moreover, it is manufactured in accordance with Cummins genuine paers standards, which ensures stable fitment and consistent sealing performance during operation. Although the oil seal is a relatively small component, its impact on engine cleanliness and durability is significant. Therefore, it is frequently selected for preventive maintenance, seal replacement, and complete engine overhaul projects. At the same time, reliable oil control helps protect adjacent components and supports smoother long-term engine performance.

🔩 Specifications

• Part number: 4359961

• Product type: Oil seal

• Brand compatibility: Cummins engines

• System location: Engine rotating shaft sealing points

• Primary function: Oil retention and contamination prevention

• Quality level: Cummins genuine paers compliant

⭐ Key Features

First, this oil seal helps maintain a stable oil barrier, which supports consistent lubrication of internal components. In addition, it reduces the risk of external oil leakage, so engine cleanliness is improved. Furthermore, the sealing lip design supports steady contact with rotating shafts during operation. As a result, wear remains controlled over long service intervals. Also, the material selection supports resistance to heat and oil exposure under normal working conditions. Because it belongs to trusted Cummins parts, replacement quality remains predictable across maintenance cycles.

⚙️ Technical Insights

The Cummins Oil Seal 4359961 functions by forming a tight yet flexible seal around a rotating shaft. Therefore, oil is retained inside the engine while allowing smooth shaft rotation. Meanwhile, proper sealing pressure helps balance friction and durability. Compared with worn or hardened seals, installing a new oil seal helps restore effective oil control quickly. Consequently, risks related to oil loss, dirt ingress, and secondary component damage are reduced. Since it aligns with Cummins genuine paers design principles, it matches original shaft geometry and service expectations without requiring modification.

🛠 Application Scenarios

This oil seal is widely used in industrial engines, generator sets, and heavy-duty equipment. For example, it supports crankshaft or auxiliary shaft sealing in engines that operate for extended hours. Likewise, it is suitable for service work following bearing or shaft replacement. In addition, maintenance teams rely on Cummins parts like this oil seal to help prevent downtime caused by oil leaks. Across these scenarios, stable sealing performance contributes to dependable engine operation and controlled maintenance costs.

📦 Availability

This oil seal is in stock and available for global shipping. To ensure correct fitment with your Cummins parts configuration, please provide your engine serial number (ESN). Our support team is ready to assist with compatibility verification and to confirm alignment with Cummins genuine paers requirements before shipment.