Stripped or cracked shells in GM 4L60 series units are a common problem, but strengthening the shell alone does nothing to prevent damage to the rear planetary assembly. The Sonnax SmartShell is the first and only upgrade that protects the planetary assembly and also provides a reinforced shell.
Watch the video to learn more or visit the Sonnax website [ Ссылка ]
Big thanks to the readers of Transmission Digest for voting the Sonnax SmartShell a Top Shop Product of 2012!
