5331 7137/7128 988 Turbocharger Core Rotor Assembly The 5331 7137/7128 988 Turbocharger Core Rotor Assembly is a critical core component for turbochargers. It features high-speed rotating precision, efficiently compressing intake air to boost engine power and torque while optimizing fuel combustion efficiency.Crafted from heat-resistant alloy materials, it endures extreme temperatures and rotational stresses during operation, minimizing wear and ensuring long-term stable