Product Overview:
This is an RHF5H turbocharger from IHI, engineered to OEM specifications for the Toyota 15B/15BFTE 4.0L diesel engine used in the Toyota Coaster and Optimo bus platforms. As a wastegated, pneumatically-actuated design, it restores factory boost pressure and combustion efficiency for buses suffering from power loss, excessive smoke, unusual noise, or a fully failed unit — helping keep commercial passenger vehicles running reliably.
Key Features:
- OEM-Matched Fitment: Manufactured to match the mounting configuration and flange dimensions of the original 17201-58070 turbocharger for a direct bolt-on replacement.
- Genuine IHI RHF5H Platform: A well-established heavy-duty turbo design used specifically on Toyota’s Coaster bus diesel engine, known for reliable performance under sustained passenger-transport duty cycles.
- Pneumatic Wastegate Actuation: Matches the factory wastegate control system for accurate boost regulation without additional tuning.
- Durable, Heat-Resistant Construction: Turbine and compressor components built to withstand the continuous-duty thermal and pressure cycles typical of commercial bus engines.
- Restores Lost Power & Efficiency: Addresses common failure symptoms — reduced power, smoke, unusual noise, and increased fuel consumption in aging units.
- Note on Availability: This part number is increasingly hard to source as a new unit from some suppliers (a few list it as discontinued, with rebuild/repair as the main option) — worth mentioning to buyers if your stock is limited or if you offer a repair/exchange service.
- Warranty: Typically 1-year manufacturer warranty for new units (confirm specific terms with your supplier; some suppliers may only offer repair/rebuild service for this part, often with a refundable core deposit).
Before You Buy:
Please confirm the part number stamped on your original turbocharger (17201-58070 / VB9) against your Coaster bus’s exact production year and engine variant, since Toyota’s 15B/15BFTE turbo applications can vary across model years. If new units are hard to source, let us know if you’d like information on repair/rebuild service as an alternative. Let us know your vehicle’s VIN or chassis number if you’d like help verifying exact compatibility before ordering.
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