This curved sand cast supercharger snout mount supercharger belt adjuster is our reverse mount tensioner arm used in our Slant 6 kits. It is machined to be fitted with a pre tensioner AS0506s . The snout mount end is machined for snouts between 64/66mm and has a single m8 bolt to clamp it to the snout. The outside diameter is 100mm and is 18mm thick. It can be rotated 365 degrees with the pretensioner bolted to the front or back of the arm to achieve the perfect alignment.