Cummins Valve Stem Seal 4099093 – Reliable oil control for consistent engine performance

The Cummins Valve Stem Seal 4099093 is designed to regulate oil flow between the valve stem and valve guide, helping maintain clean and stable combustion. As a critical sealing component within the Cummins parts system, it plays an important role in reducing oil consumption and limiting carbon buildup in the combustion chamber. Moreover, it is manufactured in line with Cummins genuine paers standards, which ensures dependable fitment and consistent sealing performance. Although the valve stem seal is compact, its impact on engine efficiency and service life is significant. Therefore, it is often chosen during cylinder head service, valve train maintenance, and full engine overhaul work. At the same time, its reliable sealing action supports smoother engine operation over extended running periods.

🔩 Specifications

• Part number: 4099093

• Product type: Valve stem seal

• Brand compatibility: Cummins engines

• System location: Cylinder head valve assembly

• Primary function: Oil flow control and sealing

• Quality level: Cummins genuine paers compliant

⭐ Key Features

First, this valve stem seal helps control the amount of oil reaching the valve stem, which supports cleaner combustion. In addition, it reduces the risk of excess oil entering the combustion chamber, so smoke and deposits are minimized. Furthermore, the seal design supports consistent contact with the valve stem during repeated motion cycles. As a result, sealing performance remains stable over time. Also, the material selection supports resistance to heat and oil exposure under normal engine conditions. Because it belongs to trusted Cummins parts, replacement quality remains consistent during maintenance planning.

⚙️ Technical Insights

The Cummins Valve Stem Seal 4099093 functions by forming a controlled seal around the valve stem while allowing smooth vertical movement. Therefore, it limits oil passage without restricting valve motion. Meanwhile, balanced sealing pressure helps reduce friction and uneven wear. Compared with aged or hardened seals, installing a new unit helps restore proper oil control quickly. Consequently, oil consumption issues and deposit formation risks are reduced. Since it aligns with Cummins genuine paers design principles, it matches original valve train geometry and service requirements.

🛠 Application Scenarios

This valve stem seal is commonly used in industrial engines, generator sets, and heavy-duty equipment. For example, it supports engines that operate for long hours where oil control is critical to efficiency. Likewise, it is suitable for maintenance work following cylinder head removal or valve replacement. In addition, service teams rely on Cummins parts like this seal to help prevent blue smoke and loss of compression performance. Across these scenarios, stable sealing contributes to smooth engine operation and reliable output.

📦 Availability

This valve stem 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.