HKS PULLEY 8Rib-100mm

This is the HKS 8-Rib 100mm Supercharger Pulley, part number 12999-AK005. It's designed for forced induction setups, specifically for supercharger applications where an 8-rib belt system is used. This pulley is a direct replacement or upgrade component for your existing supercharger drive system.

The 100mm diameter is a key specification that influences the boost output of your supercharger. When paired with the correct supercharger and engine combination, this pulley can help achieve a specific boost level. HKS is known for well-built performance parts, and this pulley is no exception, aiming for reliable operation in demanding conditions. Its 8-rib design offers increased belt grip compared to a 6-rib setup, reducing the chance of belt slippage under load, which is crucial for consistent power delivery.

Please note that this part is not CARB approved and cannot be shipped to California. Always consult your vehicle's specific service manual or a qualified mechanic to ensure this pulley is the correct fit for your intended application and to understand the implications of changing pulley sizes on your boost levels and engine tuning.