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Thumbnail Filmstrip of 6.7 Cummins Category 1 Triple Disc Billet Torque Converter Suncoast SC-68RFEC1-20 Images
The Suncoast SC-68RFEC1-20 Category 1 Triple Disc Billet Torque Converter is the definitive upgrade for the 6.7 Cummins owner who demands more from their 2007.5–2024 68RFE transmission than the factory unit can provide. While the stock converter often struggles with the immense torque of the Cummins engine—leading to heat buildup and slip—this Category 1 converter is engineered to transform that raw power into efficient, reliable motion. By utilizing a triple-disc configuration, it provides significantly more friction surface area than a standard single-disc unit, ensuring that whether you are navigating a steep grade with a fifth-wheel or hauling heavy equipment to a job site, your transmission remains cool and your power delivery stays constant.
- Triple Carbon-Graphitic Clutch Discs: These high-friction materials are chosen for their superior thermal capacity and wear resistance, providing a precise and incredibly firm lock-up.
- CNC-Machined Billet Steel Cover: Unlike stamped OEM covers that can flex under pressure, this rigid billet cover maintains a flat mating surface for the clutches, preventing leaks and uneven wear.
- Furnace-Brazed Fins: To eliminate the risk of blade failure under high stress, the internal fins are furnace-brazed, reinforcing the hydraulic flow path for maximum efficiency.
- 4140 Hardened Hub and Turbine Splines: These critical high-wear areas are constructed from 4140 chromoly steel to prevent the stripping or galling that often plagues lesser components.
- Billet Lockup Apply Piston: This component ensures even pressure distribution across the clutch pack, eliminating "hot spots" and extending the life of the internal assembly.
- Internal Durability Upgrades: Includes a Torrington thrust bearing stator design for reduced internal friction and an integrated balloon plate to prevent expansion under high-pressure scenarios.
- Precision Manufacturing: Every unit undergoes pressurized hot soak leak testing and is computer-balanced to within .01 grams to ensure vibration-free operation across the entire RPM range.
Investing in the SC-68RFEC1-20 is about choosing a cost-effective solution that prioritizes daily utility and long-term resilience over unnecessary racing aesthetics. This converter is purpose-built for the "everyday hero" truck—the vehicle that needs to be ready for work every morning without fail. It is important to note that while this unit is vastly superior to the factory converter for heavy-duty towing and hauling, it is not intended for competition use or high-horsepower racing applications. Instead, it serves as a sophisticated piece of insurance for your drivetrain, delivering the refined vehicle response and solid performance that Cummins owners expect.
The Suncoast SC-68RFEC1-20 Category 1 Triple Disc Billet Torque Converter is the definitive upgrade for the 6.7 Cummins owner who demands more from their 2007.5–2024 68RFE transmission than the factory unit can provide. While the stock converter often struggles with the immense torque of the Cummins engine—leading to heat buildup and slip—this Category 1 converter is engineered to transform that raw power into efficient, reliable motion. By utilizing a triple-disc configuration, it provides significantly more friction surface area than a standard single-disc unit, ensuring that whether you are navigating a steep grade with a fifth-wheel or hauling heavy equipment to a job site, your transmission remains cool and your power delivery stays constant.
Triple Carbon-Graphitic Clutch Discs: These high-friction materials are chosen for their superior thermal capacity and wear resistance, providing a precise and incredibly firm lock-up.
CNC-Machined Billet Steel Cover: Unlike stamped OEM covers that can flex under pressure, this rigid billet cover maintains a flat mating surface for the clutches, preventing leaks and uneven wear.
Furnace-Brazed Fins: To eliminate the[...]
The Suncoast SC-68RFEC1-20 Category 1 Triple Disc Billet Torque Converter is the definitive upgrade for the 6.7 Cummins owner who demands more from their 2007.5–2024 68RFE transmission than the factory unit can provide. While the stock converter often struggles with the immense torque of the Cummins engine—leading to heat buildup and slip—this Category 1 converter is engineered to transform that raw power into efficient, reliable motion. By utilizing a triple-disc configuration, it provides significantly more friction surface area than a standard single-disc unit, ensuring that whether you are navigating a steep grade with a fifth-wheel or hauling heavy equipment to a job site, your transmission remains cool and your power delivery stays constant.
- Triple Carbon-Graphitic Clutch Discs: These high-friction materials are chosen for their superior thermal capacity and wear resistance, providing a precise and incredibly firm lock-up.
- CNC-Machined Billet Steel Cover: Unlike stamped OEM covers that can flex under pressure, this rigid billet cover maintains a flat mating surface for the clutches, preventing leaks and uneven wear.
- Furnace-Brazed Fins: To eliminate the risk of blade failure under high stress, the internal fins are furnace-brazed, reinforcing the hydraulic flow path for maximum efficiency.
- 4140 Hardened Hub and Turbine Splines: These critical high-wear areas are constructed from 4140 chromoly steel to prevent the stripping or galling that often plagues lesser components.
- Billet Lockup Apply Piston: This component ensures even pressure distribution across the clutch pack, eliminating "hot spots" and extending the life of the internal assembly.
- Internal Durability Upgrades: Includes a Torrington thrust bearing stator design for reduced internal friction and an integrated balloon plate to prevent expansion under high-pressure scenarios.
- Precision Manufacturing: Every unit undergoes pressurized hot soak leak testing and is computer-balanced to within .01 grams to ensure vibration-free operation across the entire RPM range.
Investing in the SC-68RFEC1-20 is about choosing a cost-effective solution that prioritizes daily utility and long-term resilience over unnecessary racing aesthetics. This converter is purpose-built for the "everyday hero" truck—the vehicle that needs to be ready for work every morning without fail. It is important to note that while this unit is vastly superior to the factory converter for heavy-duty towing and hauling, it is not intended for competition use or high-horsepower racing applications. Instead, it serves as a sophisticated piece of insurance for your drivetrain, delivering the refined vehicle response and solid performance that Cummins owners expect.