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Intake Valve Stem Seal Cummins 3942989 | 3942571, 192112, J942989, 87417124
Prevent oil from leaking into the combustion chamber with this high-quality Intake Valve Stem Seal for Cummins ISB, QSB, ISC, and ISL engines. Engineered for a precise fit and exceptional thermal resistance to maintain optimal engine efficiency.
Description
High-Performance Intake Valve Stem Seal for Cummins Engines
The Cummins 3942989 Intake Valve Stem Seal is a critical component designed to prevent engine oil from seeping past the valve guide and entering the combustion chamber. By maintaining a tight, reliable seal around the intake valve stem, this component ensures optimal combustion efficiency, reduces oil consumption, and minimizes exhaust emissions. Manufactured from premium, high-temperature resistant elastomeric materials, it is built to withstand the extreme thermal and mechanical stresses of heavy-duty diesel operations.
Key Features & Benefits
- Superior Oil Control: Prevents oil from leaking into the intake port and combustion chamber, reducing blue smoke and carbon buildup.
- Extreme Durability: Constructed from advanced materials that resist degradation from engine oil, heat, and combustion byproducts.
- Precise Fitment: Engineered to exact dimensional specifications for a secure, leak-free installation on compatible Cummins cylinder heads.
- Restores Engine Efficiency: Helps maintain proper compression and clean combustion for reliable, long-term engine performance.
Engine Compatibility & Applications
This intake valve stem seal is widely used in 24-valve Cummins medium-duty and heavy-duty diesel engines, including:
- Cummins ISB Series: 3.9L, 4.5L, 5.9L, 6.7L
- Cummins QSB Series: 3.9L, 4.5L, 5.9L, 6.7L
- Cummins ISC & ISL Series: 8.9L
- Cummins 6LT Series: 8.9L
