Description

This listing is for a reconditioned Garrett GT17V turbocharger, suitable for Mercedes E-Class CDI models equipped with the OM651 engine, producing 170HP, manufactured between 2009 and 2016. It addresses common issues such as reduced engine performance, excessive exhaust smoke, or unusual whining or scraping noises often associated with turbocharger wear or failure in these vehicles. This reconditioned unit provides a cost-effective and reliable solution to restore your vehicle’s power and efficiency.

Common failure modes for this GT17V unit in the OM651 engine typically include seizure of the variable nozzle turbine (VNT) mechanism due to carbon and soot accumulation, which restricts exhaust gas flow and boost control. This often results in limp mode activation and a significant drop in power. Electronic actuator faults are also frequent, leading to incorrect boost pressure regulation, erratic performance, and associated engine management warning lights. Additionally, wear to the compressor housing or turbine shaft bearings (CHRA) can manifest as oil consumption, blue or black smoke from the exhaust, or a distinct whining noise, indicating internal damage and potential for catastrophic failure if not addressed promptly.

What this turbocharger fits

This reconditioned GT17V turbocharger is specifically designed for the Mercedes E-Class CDI with the OM651 engine code. It covers vehicles with 170HP diesel engines produced from 2009 to 2016. The primary OEM part number for this unit is A6460900480, with an alternative Garrett part number 759688-5007s. Confirming these numbers against your existing unit, usually found on the compressor housing, is crucial for correct fitment and to ensure compatibility with your specific vehicle variant.

At Gap Turbos, we offer this unit as a fully reconditioned exchange item, meticulously rebuilt to meet or exceed original manufacturer specifications. Our comprehensive reconditioning process involves disassembling the turbocharger, cleaning all components, replacing worn parts such as bearings and seals, and precisely balancing the compressor and turbine wheels. The VNT mechanism is rigorously cleaned and tested, and the electronic actuator is either reconditioned or replaced to ensure accurate boost control. We also provide new exchange units if preferred. Our Birmingham workshop offers a professional fitting service, which includes pre-installation diagnosis to identify the root cause of the original failure, and post-installation system cleaning to prevent premature failure of the new unit. All our reconditioned turbos undergo rigorous testing before dispatch.

For a precise quote and to discuss our warranty terms, please contact us directly. We are committed to supplying reliable, high-quality turbochargers backed by our expertise as a Birmingham specialist since 1986.

Specifications

Vehicle fitment

• Mercedes E-Class CDI

Common faults & troubleshooting

• Reduced engine power or “limp mode”: Often caused by a seized VNT mechanism or a faulty electronic actuator, preventing correct boost pressure regulation.
• Excessive blue or black smoke from the exhaust: Indicates oil burning due to worn turbocharger bearings (blue smoke) or incomplete combustion from incorrect boost (black smoke).
• Whining, grinding, or scraping noises from the engine bay: Suggests internal damage to the turbocharger, such as worn bearings or compressor/turbine wheel contact with housings.
• Engine management light illuminated with turbo-related fault codes: Typically points to issues with boost pressure, VNT control, or actuator electrical faults.
• Oil leaks around the turbocharger connections: Check for loose oil lines or damaged seals, which can lead to oil starvation or pressure loss.

Fitting notes for this unit

• Oil Feed Pipe: Always replace the oil feed pipe and ensure it is free from blockages or carbon deposits, as restricted oil flow is a primary cause of premature turbo failure.
• Oil Drain Pipe: Inspect and clean the oil drain pipe thoroughly to ensure unrestricted oil return to the sump; replace if any damage or significant blockages are present.
• Gaskets and Seals: Use a complete new gasket and seal kit for installation, including manifold gaskets, oil feed/drain gaskets, and downpipe gasket, to prevent leaks.
• Engine Oil and Filter: Perform an engine oil and filter change with the correct specification oil immediately before or during turbocharger installation.
• First Start Procedure: Before starting the engine, crank it without ignition for 10-15 seconds to prime the new turbocharger with oil, ensuring initial lubrication.
• Boost Leak Check: After installation, perform a boost leak test to ensure all connections are secure and there are no leaks in the charge air system.

Alternative part numbers

This turbo is also referenced by:

• 759688-5007s — GT17V Turbocharger OE 759688-5007s (Mercedes E-Class CDI, OM651, 170hp)

Frequently asked questions