![Group A Brands little.png]](https://knowledge.skunk2.com/hs-fs/hubfs/Group%20A%20Brands%20little.png?height=40&name=Group%20A%20Brands%20little.png){kind=small}
How can I verify that my Pro Stage 3 camshafts are authentic Skunk2?
Pro Stage 3 camshafts will be hand-etched on the distributor end. They will be marked with either P3+ or P3V. Newer Pro Stage 3 camshafts will also have S2 cast into the camshaft core in between the lobes.