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Thumbnail Filmstrip of 2003-2024 5.9L / 6.7L Cummins Top Hat Style Exhaust Valve Stem Seal SBI 122-1371 Images
The SBI Exhaust Valve Stem Seal (Top Hat Style) 122-1371 is a high-performance sealing solution engineered to protect the heart of your Dodge Ram 5.9L or 6.7L Cummins diesel. In the extreme heat of the exhaust side, a failing seal does more than just leak oil; it can lead to carbon-crusted valves and reduced engine life. This "positive style" seal is a sophisticated metering device designed to maintain a perfect hydraulic balance. It stops excess oil from contaminating the exhaust stream while simultaneously allowing a microscopic, precision-measured film of oil to reach the valve stem. By upgrading to this SBI seal, you are ensuring that your exhaust valves remain lubricated and your combustion cycle remains free from unwanted oil intrusion.
- Integrated Top Hat Architecture: The seal carrier body is uniquely designed to incorporate the valve spring seat, creating a stable, one-piece foundation that prevents the seal from "walking" or shifting under heavy vibration.
- Positive Style Sealing: Unlike standard umbrella seals, this positive-style seal remains fixed to the valve guide, providing consistent, active oil control regardless of engine RPM or exhaust backpressure.
- Precision Oil Metering: Engineered with a specialized contact lip that allows a controlled amount of oil to lubricate the valve stem and guide bore, effectively preventing stem seizure and friction wear.
- Versatile Fitment: Specifically designed to accommodate valve stems up to 0.003-inch oversize, providing a perfect seal even on refurbished valves or high-mileage components.
- Sold Individually: Offers maximum convenience and flexibility, allowing you to source the exact number of seals needed for a specific cylinder repair or a full 24-valve head overhaul.
Choosing the 122-1371 is an educational investment in the longevity of your Cummins engine. Because the exhaust side operates at significantly higher temperatures than the intake, the "Top Hat" design is particularly beneficial; the weight and tension of the valve spring hold the seal firmly in place, ensuring it never loses its physical orientation. This design provides the structural integrity needed to survive millions of cycles in a heavy-duty diesel environment. Whether you are performing a routine top-end refresh or a complete performance rebuild, these SBI exhaust seals provide the precision oil management required to keep your valvetrain moving smoothly and your engine running clean.
Specifications:
- Type: Positive
- Seal O.D: 0.6500
- Top Stem I.D: 0.2453
- Overall Height: 0.6340
- Bottom Seal I.D: 0.4900
- Inner Seal Height: 0.4173
- Material: Fluoroelastomer
- Nominal Stem Diameter: 7mm
- Nominal Guide O.D: 0.510-0.520
Note: Qty of 12 exhaust valve stem seals required per engine.
The SBI Exhaust Valve Stem Seal (Top Hat Style) 122-1371 is a high-performance sealing solution engineered to protect the heart of your Dodge Ram 5.9L or 6.7L Cummins diesel. In the extreme heat of the exhaust side, a failing seal does more than just leak oil; it can lead to carbon-crusted valves and reduced engine life. This "positive style" seal is a sophisticated metering device designed to maintain a perfect hydraulic balance. It stops excess oil from contaminating the exhaust stream while simultaneously allowing a microscopic, precision-measured film of oil to reach the valve stem. By upgrading to this SBI seal, you are ensuring that your exhaust valves remain lubricated and your combustion cycle remains free from unwanted oil intrusion.
Integrated Top Hat Architecture: The seal carrier body is uniquely designed to incorporate the valve spring seat, creating a stable, one-piece foundation that prevents the seal from "walking" or shifting under heavy vibration.
Positive Style Sealing: Unlike standard umbrella seals, this positive-style seal remains fixed to the valve guide, providing consistent, active oil control regardless of engine RPM or exhaust backpressure.
Preci[...]
The SBI Exhaust Valve Stem Seal (Top Hat Style) 122-1371 is a high-performance sealing solution engineered to protect the heart of your Dodge Ram 5.9L or 6.7L Cummins diesel. In the extreme heat of the exhaust side, a failing seal does more than just leak oil; it can lead to carbon-crusted valves and reduced engine life. This "positive style" seal is a sophisticated metering device designed to maintain a perfect hydraulic balance. It stops excess oil from contaminating the exhaust stream while simultaneously allowing a microscopic, precision-measured film of oil to reach the valve stem. By upgrading to this SBI seal, you are ensuring that your exhaust valves remain lubricated and your combustion cycle remains free from unwanted oil intrusion.
- Integrated Top Hat Architecture: The seal carrier body is uniquely designed to incorporate the valve spring seat, creating a stable, one-piece foundation that prevents the seal from "walking" or shifting under heavy vibration.
- Positive Style Sealing: Unlike standard umbrella seals, this positive-style seal remains fixed to the valve guide, providing consistent, active oil control regardless of engine RPM or exhaust backpressure.
- Precision Oil Metering: Engineered with a specialized contact lip that allows a controlled amount of oil to lubricate the valve stem and guide bore, effectively preventing stem seizure and friction wear.
- Versatile Fitment: Specifically designed to accommodate valve stems up to 0.003-inch oversize, providing a perfect seal even on refurbished valves or high-mileage components.
- Sold Individually: Offers maximum convenience and flexibility, allowing you to source the exact number of seals needed for a specific cylinder repair or a full 24-valve head overhaul.
Choosing the 122-1371 is an educational investment in the longevity of your Cummins engine. Because the exhaust side operates at significantly higher temperatures than the intake, the "Top Hat" design is particularly beneficial; the weight and tension of the valve spring hold the seal firmly in place, ensuring it never loses its physical orientation. This design provides the structural integrity needed to survive millions of cycles in a heavy-duty diesel environment. Whether you are performing a routine top-end refresh or a complete performance rebuild, these SBI exhaust seals provide the precision oil management required to keep your valvetrain moving smoothly and your engine running clean.
Specifications:
- Type: Positive
- Seal O.D: 0.6500
- Top Stem I.D: 0.2453
- Overall Height: 0.6340
- Bottom Seal I.D: 0.4900
- Inner Seal Height: 0.4173
- Material: Fluoroelastomer
- Nominal Stem Diameter: 7mm
- Nominal Guide O.D: 0.510-0.520
Note: Qty of 12 exhaust valve stem seals required per engine.