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Stage 8 Locking Transmission Pan Bolts are easy to install and they are absolute
insurance against oil leaks caused by loosening oil pan bolts. This unique
patented and trademarked functional design is just three pieces: a grooved
bolt (Grade 8 Steel), a locking retainer, and a snap ring. The Locking
Transmission Pan Bolt Kits are available for most engines include the
correct amount of patented, grooved bolts (size depending on application),
retaining washers, and locking retainers.