Heavy-Duty Rebuild Kit

Features:

• Fits 2011-2017 Ford F250 and F350 6.7L
• Designed for 6R140 TorqShift automatic transmission
• Engineered to handle increased torque and load
• Addresses known weak points in the 6R140
• Upgraded 4-5-6 clutch pack for better durability
• Reduces harsh shifting and 3-4 gear squawk
• Uses advanced friction materials for smoother shifts
• Ideal for heavy-duty towing or modified trucks
• Improves longevity over stock transmission components
• Backed by proven SunCoast transmission engineering
• Supports higher friction without sacrificing control
• Designed based on real-world testing and refinement

Built For Trucks That Work Hard Every Day

If your 6.7L Powerstroke spends its life towing, hauling, or putting in long miles, the SunCoast SC-6R140SC-2 Heavy-Duty Rebuild Kit is a smart upgrade when it is time to refresh the transmission. This kit is designed for truck owners who want better durability and smoother operation without jumping straight into an all-out race build. SunCoast focused on improving the areas that see the most stress in real-world driving, especially when weight and torque are added to the equation. The result is a transmission that feels more controlled, more consistent, and better suited for demanding use. Shifts are smoother and more predictable, which makes a big difference when towing heavy or driving in stop-and-go conditions. This kit is ideal for owners who rely on their truck daily and want confidence that the transmission can keep up. It is the kind of upgrade that adds peace of mind without sacrificing drivability.

Engineered Improvements For The 6R140 Platform

The SunCoast SC-6R140SC-2 rebuild kit is designed specifically for the 6R140 TorqShift transmission found in 2011-2017 Ford F250 and F350 trucks with the 6.7L Powerstroke. SunCoast identified the 4-5-6 clutch pack as a critical weak point and engineered upgraded friction materials to address durability without creating harsh shifts. Rather than reducing friction and allowing slip, SunCoast developed a balanced solution that improves holding power while maintaining smooth gear changes. This approach helps eliminate common shift complaints such as the 3-4 squawk while improving clutch life. The kit is built around the factory strengths of the 6R140, including its robust geartrain and deep first gear, while reinforcing areas affected by added torque. Extensive testing guided the final clutch material selection to ensure consistent performance under load. This rebuild kit is well suited for stock or mildly modified trucks that demand long-term reliability and refined shifting behavior.

Fitment: 2011, 2012, 2013, 2014, 2015, 2016, 2017 Ford F250/F350 6.7L Powerstroke

Notes:

• Built for 2011-2017 F250/F350 6.7L Powerstroke
• Targets weak 4-5-6 clutch pack in 6R140
• Reduces harsh shifting and 3-4 gear squawk
• Uses custom friction for better engagement
• Avoids low-friction materials that cause slip
• Tested and backed by patented design
• Great for heavy-duty and towing use
• Improves transmission strength and lifespan
• Supports factory Ravigneaux gear design
• More than a basic rebuild or refresh kit