Remanufactured Turbo / Turbocharger – 802774-0005 Mercedes ML350, GL350, S350 3.0 CDI | OM642 | 211-258HP
Supplied with gaskets included, without the original manufacturer’s box
Please check your part number before ordering. If you are unsure, call us on
07440 707 255 or
01323 301 999 and we will be happy to confirm compatibility.
Commonly searched under part numbers 802774-0005, 8027740005 and 802774 0005, this turbo fits Mercedes-Benz ML350, GL350 and S350 3.0 CDI diesel engines. Designed for 211–258 HP OM642 applications, it is a direct replacement unit used across Mercedes V6 diesel models.
Typical signs of turbo failure include loss of power, excessive smoke, increased oil consumption or a whining noise under load. These engines should be checked for oil supply condition, boost leaks and intake system restriction before installing a replacement. It is also important to inspect the emissions system, including the DPF - see our DPF cleaning service if required.
Built to OEM specification, this Mercedes-Benz 3.0 CDI turbocharger 802774-0005 ensures correct fitment and reliable performance, restoring proper boost pressure, efficiency and drivability across ML, GL and S-Class diesel applications.
Product Highlights
- Remanufactured turbocharger
- Part number: 802774-0005
- Supplied with gaskets included
- Fits Mercedes-Benz 3.0 CDI models
- Direct turbo replacement - no modification needed
- Sold on an exchange basis
- As turbo specialists, we offer a professional fitting service at our Eastbourne workshop
- Fitting instructions
Exchange Basis – How It Works
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:
- Pay the surcharge – your replacement turbo is dispatched immediately. The surcharge is refunded in full once we receive your old unit. Please return your old turbocharger within 21 days.
- Send your old turbo first – once received, we will dispatch your replacement the same day with no surcharge required.
- Visit our workshop – bring your old unit to our Eastbourne workshop and we will exchange it on-site.
Vehicle Compatibility
This turbocharger covers the following makes, models, and engine specifications:
| Make |
Model |
HP |
kW |
Engine Size |
Engine Code |
Year |
| Mercedes-Benz |
ML350 / GL350 / S350 |
211 / 258 |
155 / 192 |
3.0 |
OM642LS / 642838 / 642858 |
2010– |
Associated part numbers:
802774, 802774-0002, 802774-0004, 802774-0005, 802774-0006, 802774-0008, A6420901186, A6420901686, 6420901186, 6420901686
Fitting Advice
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.
Fitting Service at Turboworks
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.
Warranty Information
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.
Read full Warranty Information
Delivery & Dispatch
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.
Read full Collection and Delivery information
Returns
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.
Frequently Asked Questions
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.
