Overdrive Damper Assembly

Features:

• Fixes 3-4 gear squawk in 6R140
• Designed for 2011-2017 6.7L Powerstroke trucks
• Improves 4-5-6 clutch pack longevity
• Reduces noise during 3-4 gear shift
• Uses patented sound reduction technology
• Clean and quiet gear engagement
• Includes billet intermediate shaft and hub
• Essential with high-friction clutch upgrades
• Ideal for high torque and towing setups
• Built to handle heavy-duty transmission loads
• Helps prevent premature clutch wear
• Made for performance and reliability

Say Goodbye To The Annoying 3 4 Shift Noise

If you have driven a 6R140 hard enough, you have probably heard the infamous squawk during the 3-4 shift. It is one of those noises that makes you wince every time it happens, especially after investing in upgraded clutches or more power. The SunCoast Overdrive Damper Assembly was designed to solve that exact problem without sacrificing performance. It delivers a smooth, clean gear change that feels refined instead of harsh. This upgrade is especially valuable for trucks that tow heavy, see long highway miles, or run higher torque levels. Instead of masking the issue, SunCoast engineered a real fix that restores confidence in every shift. Once installed, the transmission feels quieter, more controlled, and better suited for serious use.

Engineered To Control Noise And Protect The E Clutch

The SunCoast SC-6R140-ECD-BSH Overdrive Damper Assembly is designed for 2011-2017 Ford F250 and F350 trucks equipped with the 6.7L Powerstroke and 6R140 transmission. It directly addresses noise created during the oncoming 4th gear clutch application in the 3-4 shift. This issue becomes more noticeable when higher friction clutch materials are used to handle increased torque and load. SunCoast uses patented Sound Reduction Absorption Technology to dissipate unwanted vibration before it becomes audible noise. The assembly includes a billet intermediate shaft and hub, adding strength and stability to the overdrive section. This improved design also helps extend the life of the 4-5-6 clutch pack by reducing shock during engagement. It is an ideal upgrade for performance builds, towing applications, and heavy-duty trucks that demand smooth and reliable shifting.

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

Notes:

• Specifically designed for 2011-2017 F250/F350 with 6.7L Powerstroke
• Fixes common 3-4 shift squawk in 6R140 transmissions
• Noise becomes more noticeable with aftermarket clutches
• Patented design uses Sound Reduction Absorption Technology
• Includes billet intermediate shaft and billet hub
• Improves gear engagement without sacrificing performance
• Helps extend the life of the 4-5-6 clutch pack
• Recommended for trucks with increased horsepower and torque
• Ideal for heavy use, towing, and performance applications