This multi-engine tool is used to lock both camshafts on cars with 2 valve V6, 5 valve V6 and 4.2 liter V8 VW/Audi engines. Replaces tool numbers 3243, 3391 and T40005. Lightweight high strength aluminum with self-hanging feature eliminates the hooks, clamps and wire typically needed to strap the tool to the engine. Use with 2-arm puller (MN2222) and our crank lock pin (MN3242) each sold separately. Not for 3.0 liter V6. Not for use with impact tools. Metalnerd brand.