Supertech Audi / BMW / Opel 6mm Stem Triple Groove Valve Lock (Req 2 Per Valve) - Set of 16

If you're rebuilding the top end of your Audi, BMW, or Opel engine, you'll need to secure the valves properly. These triple groove valve locks from Supertech are designed to do just that, ensuring your valves stay in place under all operating conditions. They are specifically made for 6mm valve stems, a common size in many performance and stock applications for these European makes.

Each valve requires two of these locks to hold the valve spring retainer securely. This set comes with 16 pieces, which is enough for 8 valves, making it ideal for a typical 4-cylinder engine rebuild or for replacing a full set on a smaller displacement engine. Supertech is known for making well-built valvetrain components, and these locks are no exception. They are designed to handle the stresses of repeated opening and closing, helping to maintain proper valve timing and compression.