Product Overview:
This is a TD4502 variable-nozzle-turbine (VNT) turbocharger from Garrett, engineered to OEM specifications for the Nissan UD A590 heavy truck/bus’s 12.5L PF6 diesel engine. As a VNT design, it uses adjustable turbine vanes to optimize boost delivery across the RPM range, improving low-end torque and throttle response while reducing turbo lag compared to fixed-geometry designs. Rated to match factory outputs of 257–350HP depending on trim, it restores boost pressure and power delivery for heavy trucks suffering from power loss, boost leaks, unusual noise, or a fully failed unit.
Key Features:
- OEM-Matched Fitment: Manufactured to match the mounting configuration and flange dimensions of the original 466559-0020 turbocharger for a direct bolt-on replacement.
- Genuine Garrett TD4502 Platform: A well-established heavy-duty turbo design used on Nissan UD’s large-displacement commercial truck/bus diesel engine.
- Variable Nozzle Turbine (VNT) Technology: Adjustable vane positioning responds dynamically to engine load for smoother, more responsive power across the RPM range, well-suited for heavy commercial applications.
- Durable, Heat-Resistant Construction: Turbine and compressor components built to withstand the sustained thermal and pressure cycles typical of large commercial diesel engines.
- Restores Lost Power & Efficiency: Addresses common failure symptoms — reduced power, smoke, unusual noise, and increased fuel consumption in aging heavy-duty trucks.
- Complete Repair Kit Available: A matching repair kit (468132-0000) is available separately if only internal components need service rather than the full unit.
- Warranty: Typically 1–2 years manufacturer warranty depending on supplier (confirm specific terms with your listing).
Before You Buy:
Please confirm the part number stamped on your original turbocharger (466559-0020 / 14201-96764, etc.) against your truck/bus’s exact model and engine serial number, since Nissan UD A590 commercial vehicle turbo applications can vary across production years. Let us know your vehicle’s VIN or engine serial number if you’d like help verifying exact compatibility before ordering.
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