HKS 8-Rib 100mm GT Supercharger Pulley Black Aluminum 12999-AK005 Aftermarket Exhaust You'll need a screwdriver and

You'll need a screwdriver and basic hand tools to remove the old pump and secure the new one

Audi S5 8T Sportback Quattro (2007–2017)

optimizing engine compartment cooling airflow

Spanner wrenches and damping adjustment knobs

Part numbers ending in a "X" are on a X-style forging for additional strength

HKS 8-Rib 100mm GT Supercharger Pulley Black Aluminum 12999-AK005 Aftermarket Exhaust You'll need a screwdriver andHKS has developed this Supercharger Pulley to work in conjunction with the HKS GT Series Turbochargers . improve performance over the standard naturally aspirated engine by offering lag free linear forced induction power. The centrifugal GT Supercharger allows the torque can be stable at all range of the engine rpm, and the engine output can increase smoothly from low to high engine rpm. Features: 8 Rib 100mm Diameter Black Finish Fitment: Universal