Supertech Audi/BMW/Opel 6mm Stem Triple Groove Valve Lock - Set of 12 (Req 2 Per Valve)

If you're rebuilding the top end of your Audi, BMW, or Opel engine, these Supertech valve locks are what you'll need to secure your valves. Each valve uses two of these locks, and this set comes with 12, so you'll have enough for six valves, typically covering one cylinder's intake or exhaust side.

These locks feature a triple groove design, which is a common setup for many performance and OEM applications. They're made to work with 6mm valve stems, a standard size found in a variety of European engines. Supertech is known for making well-built engine components, and these valve locks are designed to hold up under the stresses of engine operation.