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Thumbnail Filmstrip of 1989-2017 5.9L / 6.7L Cummins Tappet SB International VL554 Images
The SB International VL554 Tappet is a precision-engineered valvetrain component essential for the continued performance of 5.9L and 6.7L Cummins engines produced between 1989 and 2017. Often referred to as a lifter, this part serves as the mechanical bridge between the camshaft and the valves. By translating the camshaft’s rotational movement into the vertical linear motion required to actuate the valves, the VL554 ensures that your engine breathes correctly. Beyond simple motion, this tappet is designed to maintain consistent contact within the valvetrain, compensating for thermal expansion and preventing the mechanical "slap" that leads to premature component failure.
- Precise Motion Conversion: Effectively converts the circular lobes of the camshaft into the linear force needed to open and close intake and exhaust valves.
- Hydraulic Zero-Lash Adjustment: Utilizes active engine oil pressure to eliminate gaps (lash) between valvetrain components, ensuring a quiet operation and constant contact.
- Thermal Management: Built to handle the high heat cycles of heavy-duty diesel engines, managing the expansion of metal parts to maintain timing accuracy.
- Enhanced Durability: Engineered for superior tracking on the cam lobe, which reduces friction and extends the service life of both the tappet and the camshaft itself.
- Combustion Efficiency: By facilitating exact valve timing, this component prevents the "ticking" noise associated with loose tolerances and ensures optimal fuel combustion and power output.
Integrating the SB International VL554 into your Cummins valvetrain is a strategic move for any technician or vehicle owner looking to restore smooth engine harmonics and reduce internal wear. Because it functions as a hydraulic regulator, it removes the need for frequent manual lash adjustments, allowing the system to self-correct based on real-time oil pressure. This reliability is vital for maintaining the rigorous demands of 5.9 and 6.7 Cummins applications, ensuring that the engine remains efficient, quiet, and powerful throughout its operational life.
Note: Order qty 12 for a complete set for the 5.9 | 6.7 Cummins 1989-2017. Order qty 8 for the 3.9L Cummins 4BT 1989-1998
The SB International VL554 Tappet is a precision-engineered valvetrain component essential for the continued performance of 5.9L and 6.7L Cummins engines produced between 1989 and 2017. Often referred to as a lifter, this part serves as the mechanical bridge between the camshaft and the valves. By translating the camshaft’s rotational movement into the vertical linear motion required to actuate the valves, the VL554 ensures that your engine breathes correctly. Beyond simple motion, this tappet is designed to maintain consistent contact within the valvetrain, compensating for thermal expansion and preventing the mechanical "slap" that leads to premature component failure.
Precise Motion Conversion: Effectively converts the circular lobes of the camshaft into the linear force needed to open and close intake and exhaust valves.
Hydraulic Zero-Lash Adjustment: Utilizes active engine oil pressure to eliminate gaps (lash) between valvetrain components, ensuring a quiet operation and constant contact.
Thermal Management: Built to handle the high heat cycles of heavy-duty diesel engines, managing the expansion of metal parts to maintain timing accuracy.
Enhanced Durab[...]
The SB International VL554 Tappet is a precision-engineered valvetrain component essential for the continued performance of 5.9L and 6.7L Cummins engines produced between 1989 and 2017. Often referred to as a lifter, this part serves as the mechanical bridge between the camshaft and the valves. By translating the camshaft’s rotational movement into the vertical linear motion required to actuate the valves, the VL554 ensures that your engine breathes correctly. Beyond simple motion, this tappet is designed to maintain consistent contact within the valvetrain, compensating for thermal expansion and preventing the mechanical "slap" that leads to premature component failure.
- Precise Motion Conversion: Effectively converts the circular lobes of the camshaft into the linear force needed to open and close intake and exhaust valves.
- Hydraulic Zero-Lash Adjustment: Utilizes active engine oil pressure to eliminate gaps (lash) between valvetrain components, ensuring a quiet operation and constant contact.
- Thermal Management: Built to handle the high heat cycles of heavy-duty diesel engines, managing the expansion of metal parts to maintain timing accuracy.
- Enhanced Durability: Engineered for superior tracking on the cam lobe, which reduces friction and extends the service life of both the tappet and the camshaft itself.
- Combustion Efficiency: By facilitating exact valve timing, this component prevents the "ticking" noise associated with loose tolerances and ensures optimal fuel combustion and power output.
Integrating the SB International VL554 into your Cummins valvetrain is a strategic move for any technician or vehicle owner looking to restore smooth engine harmonics and reduce internal wear. Because it functions as a hydraulic regulator, it removes the need for frequent manual lash adjustments, allowing the system to self-correct based on real-time oil pressure. This reliability is vital for maintaining the rigorous demands of 5.9 and 6.7 Cummins applications, ensuring that the engine remains efficient, quiet, and powerful throughout its operational life.
Note: Order qty 12 for a complete set for the 5.9 | 6.7 Cummins 1989-2017. Order qty 8 for the 3.9L Cummins 4BT 1989-1998