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Thumbnail Filmstrip of 5.9|6.7 Cummins Top Hat Style Intake Valve Stem Seal SBI 122-1370 Images
The SBI Intake Valve Stem Seal (Top Hat Style) 122-1370 is a sophisticated engineering solution designed to eliminate oil consumption and smoking in your Dodge Ram 5.9L or 6.7L Cummins diesel. In the high-performance world of diesel engines, the valve stem seal is far more than a simple rubber plug; it is a precision metering device. Its primary job is to maintain a delicate balance—stopping excess oil from entering the combustion chamber while allowing just enough lubrication to reach the valve stem and guide. By replacing brittle, leaking factory seals with this high-quality SBI unit, you protect your engine from carbon buildup on the valves and ensure a cleaner, more efficient burn.
- Integrated Top Hat Design: The unique seal carrier body incorporates the valve spring seat into a single unit, providing a stable foundation for the spring while ensuring the seal remains perfectly centered and secure.
- Positive Style Sealing: Unlike "umbrella" seals that simply deflect oil, this positive-style seal firmly grips the valve guide to provide active, consistent oil control under all vacuum and boost conditions.
- Precision Oil Metering: Specifically engineered to allow a microscopic, controlled amount of oil through the contact lip to properly lubricate the valve stem and guide bore, preventing friction-related wear.
- Oversize Compatibility: Built with versatility in mind, this seal can comfortably accommodate valve stems that are up to 0.003-inch oversize, making it ideal for engines with slightly worn or refurbished components.
- Sold Individually: Tailored for flexibility, allowing you to replace a single problematic seal during a localized repair or to purchase the exact quantity needed for a complete 24-valve intake overhaul.
Choosing the 122-1370 is an educational step toward professional-grade engine maintenance. Understanding the "Top Hat" architecture is key; because the weight of the valve spring holds the seal in place, it eliminates the risk of the seal "walking" up the valve stem—a common failure point in high-vibration diesel environments. This design ensures that the critical contact lip stays exactly where it belongs, providing long-term reliability for your 5.9L or 6.7L Cummins. Whether you are battling a blue-smoke startup or performing a comprehensive head rebuild, these SBI seals provide the precise oil management necessary to keep your valvetrain lubricated and your exhaust clean.
Specifications:
- Bottom Seal I.D: 0.4905
- Inner Seal Height: 0.4090
- Material: Fluoroelastomer
- Nominal Guide O.D: 0.510-0.520
- Nominal Stem Diameter: 7mm
- Overall Height: 0.6340
- Seal O.D: 0.6500
- Top Stem I.D: 0.2461
- Type: Positive
Note: Qty of 12 intake valve stem seals required per engine.
The SBI Intake Valve Stem Seal (Top Hat Style) 122-1370 is a sophisticated engineering solution designed to eliminate oil consumption and smoking in your Dodge Ram 5.9L or 6.7L Cummins diesel. In the high-performance world of diesel engines, the valve stem seal is far more than a simple rubber plug; it is a precision metering device. Its primary job is to maintain a delicate balance—stopping excess oil from entering the combustion chamber while allowing just enough lubrication to reach the valve stem and guide. By replacing brittle, leaking factory seals with this high-quality SBI unit, you protect your engine from carbon buildup on the valves and ensure a cleaner, more efficient burn.
Integrated Top Hat Design: The unique seal carrier body incorporates the valve spring seat into a single unit, providing a stable foundation for the spring while ensuring the seal remains perfectly centered and secure.
Positive Style Sealing: Unlike "umbrella" seals that simply deflect oil, this positive-style seal firmly grips the valve guide to provide active, consistent oil control under all vacuum and boost conditions.
Precision Oil Metering: Specifically engineered to allow a microsco[...]
The SBI Intake Valve Stem Seal (Top Hat Style) 122-1370 is a sophisticated engineering solution designed to eliminate oil consumption and smoking in your Dodge Ram 5.9L or 6.7L Cummins diesel. In the high-performance world of diesel engines, the valve stem seal is far more than a simple rubber plug; it is a precision metering device. Its primary job is to maintain a delicate balance—stopping excess oil from entering the combustion chamber while allowing just enough lubrication to reach the valve stem and guide. By replacing brittle, leaking factory seals with this high-quality SBI unit, you protect your engine from carbon buildup on the valves and ensure a cleaner, more efficient burn.
- Integrated Top Hat Design: The unique seal carrier body incorporates the valve spring seat into a single unit, providing a stable foundation for the spring while ensuring the seal remains perfectly centered and secure.
- Positive Style Sealing: Unlike "umbrella" seals that simply deflect oil, this positive-style seal firmly grips the valve guide to provide active, consistent oil control under all vacuum and boost conditions.
- Precision Oil Metering: Specifically engineered to allow a microscopic, controlled amount of oil through the contact lip to properly lubricate the valve stem and guide bore, preventing friction-related wear.
- Oversize Compatibility: Built with versatility in mind, this seal can comfortably accommodate valve stems that are up to 0.003-inch oversize, making it ideal for engines with slightly worn or refurbished components.
- Sold Individually: Tailored for flexibility, allowing you to replace a single problematic seal during a localized repair or to purchase the exact quantity needed for a complete 24-valve intake overhaul.
Choosing the 122-1370 is an educational step toward professional-grade engine maintenance. Understanding the "Top Hat" architecture is key; because the weight of the valve spring holds the seal in place, it eliminates the risk of the seal "walking" up the valve stem—a common failure point in high-vibration diesel environments. This design ensures that the critical contact lip stays exactly where it belongs, providing long-term reliability for your 5.9L or 6.7L Cummins. Whether you are battling a blue-smoke startup or performing a comprehensive head rebuild, these SBI seals provide the precise oil management necessary to keep your valvetrain lubricated and your exhaust clean.
Specifications:
- Bottom Seal I.D: 0.4905
- Inner Seal Height: 0.4090
- Material: Fluoroelastomer
- Nominal Guide O.D: 0.510-0.520
- Nominal Stem Diameter: 7mm
- Overall Height: 0.6340
- Seal O.D: 0.6500
- Top Stem I.D: 0.2461
- Type: Positive
Note: Qty of 12 intake valve stem seals required per engine.