Sonnax Dodge-Cummins diesel products deliver the best improvements available for this time-honored powerhouse transmission. Whether put to the test in a daily use workhorse or plow truck, or ensuring worry-free trips with a trailered truck pulling heavy loads, these dependable upgrades for Chrysler Dodge-Cummins diesel transmissions are the top choice for all high-quality builds.
Sonnax: the proper way to beef up your transmission.R. Weise, Versailles, IN
When trucks with RFE transmissions are pushed to the GVW limit — or even when small amounts of power are added — the Overdrive clutch quickly surfaces as the weak link. Watch this video to explore the root cause of failure, and see how the groundbreaking Smart-Tech® overdrive clutch housing kit eliminates every clutch problem without relying on valve body/pump modifications – or adding the expense of extra components.Learn More
The best products to make your transmission work BETTER than new!R. Fisher, Fishers Transmission
Sonnax in every build, stock or performance!A. Torres, Del-Tron Transmissions
You guys are the masterminds of this industry.J. Johnson, Crystal Lake Transmissions