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Thumbnail Filmstrip of Duramax 2001-2016 Valve Stem Seal SBI 122-1438 Images
The integrity of your Duramax engine depends on the precision of its smallest components, and the valve stem seal is a critical line of defense against oil consumption and combustion contamination. The SBI 122-1438 Valve Stem Seal is engineered specifically for the high-demand environment of 2006-2016 GM 6.6L Duramax engines (LLY, LBZ, LMM, LML, and LGH). By utilizing a positive-type sealing design, this component remains fixed to the valve guide, providing a consistent and controlled wipedown of the valve stem. This prevents excess oil from entering the combustion chamber—a common cause of carbon buildup and blue smoke—while ensuring the valve stem receives just enough lubrication for a long service life.
- Premium Material Construction: Fabricated from high-grade Fluoroelastomer (FKM), which offers superior resistance to the high temperatures and aggressive chemical additives found in modern synthetic diesel oils.
- Metal-Clad Reinforcement: The metal-clad style ensures a secure, press-fit installation on the valve guide, preventing the seal from "walking" or popping off during high-RPM operation.
- Precision Dimensionality: Specifically designed for 7 mm valve stems and optimized for guides with an outside diameter of 0.450" to 0.457".
- Universal Application: This seal is versatile enough to be used for both Intake and Exhaust valve positions, simplifying inventory for full cylinder head overhauls.
- Professional Compatibility: For a seamless fit and guaranteed performance, this seal is specified for use with the SBI 140-3142 valve guide.
- Manufacturer Assurance: Each seal is backed by a 1-Year Limited Warranty, providing peace of mind for professional builders and DIY enthusiasts alike.
For those performing professional-grade cylinder head service, settling for "good enough" is not an option. These seals are sold individually, allowing for exact quantity ordering whether you are replacing a single damaged seal or performing a complete 32-valve refresh on a Duramax head. By choosing SBI’s metal-clad Fluoroelastomer seals, you are investing in a component that mirrors the strict tolerances of original equipment manufacturers while providing the thermal stability required for heavy-duty diesel performance. Ensure your engine maintains its compression and oil control by utilizing the hardware designed to meet the rigorous demands of the 6.6L Duramax platform.
Specifications:
- Bottom Seal I.D.: 0.4370
- Inner Seal Height: 0.3582
- Material: Viton
- Nominal Guide O.D.: 0.450-0.457
- Nominal Stem Diameter: 7 mm
- Overall Height: 0.4527
- Seal O.D.: 0.435
- Style: Metal Clad
- Top Stem I.D.: 0.2362
- Type: Positive
Note: Qty of 32 valve stem seals required per engine.
The integrity of your Duramax engine depends on the precision of its smallest components, and the valve stem seal is a critical line of defense against oil consumption and combustion contamination. The SBI 122-1438 Valve Stem Seal is engineered specifically for the high-demand environment of 2006-2016 GM 6.6L Duramax engines (LLY, LBZ, LMM, LML, and LGH). By utilizing a positive-type sealing design, this component remains fixed to the valve guide, providing a consistent and controlled wipedown of the valve stem. This prevents excess oil from entering the combustion chamber—a common cause of carbon buildup and blue smoke—while ensuring the valve stem receives just enough lubrication for a long service life.
Premium Material Construction: Fabricated from high-grade Fluoroelastomer (FKM), which offers superior resistance to the high temperatures and aggressive chemical additives found in modern synthetic diesel oils.
Metal-Clad Reinforcement: The metal-clad style ensures a secure, press-fit installation on the valve guide, preventing the seal from "walking" or popping off during high-RPM operation.
Precision Dimensionality: Specifically designed for 7 mm valve ste[...]
The integrity of your Duramax engine depends on the precision of its smallest components, and the valve stem seal is a critical line of defense against oil consumption and combustion contamination. The SBI 122-1438 Valve Stem Seal is engineered specifically for the high-demand environment of 2006-2016 GM 6.6L Duramax engines (LLY, LBZ, LMM, LML, and LGH). By utilizing a positive-type sealing design, this component remains fixed to the valve guide, providing a consistent and controlled wipedown of the valve stem. This prevents excess oil from entering the combustion chamber—a common cause of carbon buildup and blue smoke—while ensuring the valve stem receives just enough lubrication for a long service life.
- Premium Material Construction: Fabricated from high-grade Fluoroelastomer (FKM), which offers superior resistance to the high temperatures and aggressive chemical additives found in modern synthetic diesel oils.
- Metal-Clad Reinforcement: The metal-clad style ensures a secure, press-fit installation on the valve guide, preventing the seal from "walking" or popping off during high-RPM operation.
- Precision Dimensionality: Specifically designed for 7 mm valve stems and optimized for guides with an outside diameter of 0.450" to 0.457".
- Universal Application: This seal is versatile enough to be used for both Intake and Exhaust valve positions, simplifying inventory for full cylinder head overhauls.
- Professional Compatibility: For a seamless fit and guaranteed performance, this seal is specified for use with the SBI 140-3142 valve guide.
- Manufacturer Assurance: Each seal is backed by a 1-Year Limited Warranty, providing peace of mind for professional builders and DIY enthusiasts alike.
For those performing professional-grade cylinder head service, settling for "good enough" is not an option. These seals are sold individually, allowing for exact quantity ordering whether you are replacing a single damaged seal or performing a complete 32-valve refresh on a Duramax head. By choosing SBI’s metal-clad Fluoroelastomer seals, you are investing in a component that mirrors the strict tolerances of original equipment manufacturers while providing the thermal stability required for heavy-duty diesel performance. Ensure your engine maintains its compression and oil control by utilizing the hardware designed to meet the rigorous demands of the 6.6L Duramax platform.
Specifications:
- Bottom Seal I.D.: 0.4370
- Inner Seal Height: 0.3582
- Material: Viton
- Nominal Guide O.D.: 0.450-0.457
- Nominal Stem Diameter: 7 mm
- Overall Height: 0.4527
- Seal O.D.: 0.435
- Style: Metal Clad
- Top Stem I.D.: 0.2362
- Type: Positive
Note: Qty of 32 valve stem seals required per engine.