Remanufactured turbocharger for Yanmar 4TNV84T diesel engines, suitable for a wide range of industrial, marine and generator applications. Covers 40–90HP engines from 2005 onwards used in plant machinery, agricultural equipment and power generation units. Commonly searched as Yanmar 4TNV84T turbo, RHF4 turbo, generator turbocharger, industrial diesel turbo and marine turbo replacement.
Direct OEM-spec remanufactured turbocharger built for correct fitment and reliability. Covers part numbers CYDY, VA420078, RHF4 with OE references 12950818010, 4104909. Designed to replace a worn or faulty unit, restoring boost pressure, performance and efficiency across Yanmar 4TNV84T applications in industrial, marine and generator use.
Please check the part number before ordering. If unsure, call us on 07440 707 255 or 01323 301 999.
Images are for illustration purposes only.
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Supplied without the original manufacturer’s box
Commonly searched under part numbers CYDY, VA420078 and RHF4, this remanufactured turbocharger fits Yanmar 4TNV84T diesel engines used across industrial, marine and generator applications. Covering approximately 40–90 HP outputs, it is a direct replacement unit for restoring boost performance in a wide range of equipment.
Typical signs of turbo failure include loss of power, excessive exhaust smoke, oil leakage or unusual noise under load. On these engines, it is important to check oil supply condition, air filtration and operating environment, as contamination and restricted airflow are common causes of turbo wear in industrial applications.
This remanufactured turbocharger is built to OEM specification for correct fitment and dependable performance, restoring boost pressure, efficiency and reliability across Yanmar-powered machinery.
This turbocharger is supplied on an exchange basis, which means we require your old unit to be returned. You can arrange this in whichever way is most convenient:
This turbocharger fits the following makes, models, and engine specifications:
| Make | Model | HP | kW | Engine Size | Engine Code | Year |
|---|---|---|---|---|---|---|
| Yanmar | Earth Moving / Generator / Marine Applications | 40–90 | 30–66 | 2.0–2.2 | 4TNV84T | 2005– |
Associated part numbers:
CYDY, VA420078, F41CADS0078B, F41CAD-S0078B, F41CADS0078G, F41CAD-S0078G, 4104909, IHICYDY, RHF4, 12950818010, 129508-18010
We always recommend having your replacement turbocharger fitted by a qualified mechanic. Correct installation is essential to ensure proper fitment, reliable operation, and long service life from day one.
You can read our full fitting instructions here.
It is also essential that the root cause of the original turbocharger failure is identified before fitting the replacement. In many cases there is an underlying issue that also needs attention, such as a blocked DPF. This is one of the most common contributing factors, and fitting a new turbo without resolving it can place the replacement under unnecessary strain.
We also offer a professional DPF cleaning service if required.
If you would like us to carry out the installation, our Eastbourne workshop is staffed by experienced mechanics whose day-to-day work includes turbocharger replacement, diagnostics, and related repairs.
If you are looking for a turbo specialist, click here to request a fitting quote, or call us directly on 07440 707 255 or 01323 301 999.
Please note that we do not offer a while-you-wait service. We will arrange a booking time that works for you.
Unless otherwise stated, warranty is provided to the original purchaser for repair or replacement of the turbocharger for up to 2 years from date of purchase or 12,000 miles (whichever occurs first). Warranty covers the turbocharger for faulty workmanship or components and does not extend to damage caused by misuse in fitting or operation.
The reason for failure of the previous turbocharger must be rectified prior to fitting a replacement. Air and oil filters, engine oil, gaskets and the oil feed pipe need to be changed or replaced. Proof of purchase of components may be required to support any claims.
Proof and date of the original purchase will be required before considering any warranty claim, and the unit must be returned complete. Any attempt to dismantle or repair the unit will invalidate the conditions of warranty. Warranty does not cover any cost of labour or materials required to remove or reinstall the turbocharger.
Delivery is available within the United Kingdom and internationally, subject to availability. Free delivery applies to turbochargers supplied to UK mainland addresses unless otherwise stated. Delivery timeframes provided are estimates only.
Stock items are typically dispatched for next working day delivery where orders are placed before the stated cut-off time. Non-stock or special-order items are subject to lead times, which will be confirmed separately. Certain geographical locations may require extended delivery periods.
Please inspect goods immediately upon delivery. Where packaging is visibly damaged, delivery should be refused and reported without delay.
If you need to return a turbocharger or send a unit back to us, please contact us first so we can advise on the correct process.
Where a unit is being returned or collected, it must be securely packaged in a suitable, rigid cardboard box and adequately protected using appropriate packaging materials. Non-essential components (including oil feed pipes, oil return pipes, sensors, wiring, brackets, and ancillary fittings) should be removed before sending.
Where return shipment is arranged by the customer, please retain proof of shipment and tracking details.
How long does a turbocharger replacement take?
The time required depends on the vehicle, engine layout, and how accessible the turbocharger is. Some replacements are straightforward and take only a few hours, while others require more dismantling and can take considerably longer. Contact us for a realistic estimate based on your specific vehicle.
How much does turbo replacement cost?
The cost varies depending on the vehicle and the extent of the labour involved. We are experienced in finding practical solutions across a range of budgets, including for older and less common units. Get in touch for a free, no-obligation quote.
What are the signs of a failing turbo?
Common signs include loss of power, smoke from the exhaust, increased oil consumption or unusual whining noises. If your turbo is showing these symptoms, it may need replacing.
Need help confirming compatibility?
Contact Turboworks on 07440 707 255 or 01323 301 999.
Based in Eastbourne – specialists in turbocharger replacement, supply, and diagnostics.
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