Turbocharger KP39 for BYD 1.5T Engine (BYD476ZQA/ZQB/ZQC) – OEM 54399700132 / 54399880132 is the factory-spec replacement that restores crisp spool, stable boost, and emission-ready efficiency on BYD 1.5T platforms. Engineered to OEM geometry, the KP39’s compressor/turbine pairing maintains fast transient response, minimal surge, and durable shaft support under daily heat cycles. Precision-balanced CHRA, wastegate calibration, and high-temp alloys deliver smooth acceleration with reduced lag and long service life. Whether you’re addressing power loss, smoke, or limp-mode faults, an OEM KP39 brings back designed airflow and ECU-mapped boost control. G-Sparts supplies authentic units with clear tracing to OEM 54399700132 / 54399880132, technical fitment guidance, and installation best practices for dependable, warranty-friendly results.