Collection: SunCoast Performance

SunCoast Transmissions are known across the diesel industry for consistent strength, clean shifting, and true hard-use durability. This collection brings together SunCoast’s most proven parts for the Powerstroke, Duramax, and Cummins platforms, including complete transmissions, torque converters, rebuild kits, clutch packs, valve bodies, and the hardware needed for high-load work trucks or performance builds.

SunCoast’s engineering approach focuses on fixing weak points found in factory units. Their upgraded clutch materials, billet converters, and strengthened internals are designed to handle real heat and real load—not just dyno pulls. Whether you run a tuned 6.7L Powerstroke, a towing-focused 5.9/6.7 Cummins, or a Duramax with added fueling and turbo work, these components give you a predictable, stable shift profile under daily use or heavy hauling.

What You’ll Find in the SunCoast Collection

• Complete transmissions for major diesel platforms
• Billet multi-disc torque converters
• Performance rebuild kits and clutch packs
• Valve body upgrades for improved line pressure control
• Transmission pans, filters, seals, and service hardware
• Components for Allison, 68RFE, 47/48RE, 6R140, 10R140, and 10L1000
• Each product is built to solve reliability issues common to factory units—shudder, slip, excessive heat, lazy shifts, and premature wear. SunCoast designs these parts for trucks that tow, trucks that work, and trucks that run added power with confidence.

For diesel owners who want proven drivetrain strength backed by engineering and real-world testing, this SunCoast lineup delivers the parts needed to build a transmission you can trust for the long haul.