Description

This reconditioned Garrett GT17V turbocharger is designed for the Audi A4 2.0 TDI (BPW engine, 140 HP) manufactured between 2004 and 2008. It directly replaces original equipment part number 761437-5005s and alternative part number 035145702K, restoring lost power and efficiency to your vehicle.

As a variable nozzle turbine (VNT) unit, the GT17V precisely controls exhaust gas flow onto the turbine wheel, optimising boost pressure across the engine’s RPM range for improved response and fuel economy. Common failure modes for this specific turbocharger often stem from its variable geometry mechanism. Carbon build-up from exhaust gases can cause the VNT vanes to seize, leading to erratic boost control, often manifesting as either over-boosting (limp mode) or under-boosting (lack of power). The electronic actuator, which controls these vanes, is also a frequent point of failure, either due to internal electrical faults or as a secondary issue caused by seized vanes placing excessive strain on its motor. Furthermore, like many turbos, the Centre Housing Rotating Assembly (CHRA) bearings can wear over time, particularly if oil supply is restricted or contaminated, resulting in excessive shaft play, oil consumption, blue smoke from the exhaust, and audible whining or grinding noises.

What this turbocharger fits

This specific reconditioned Garrett GT17V turbocharger is suitable for:

• Vehicle: Audi A4
• Engine: 2.0 TDI (BPW engine code)
• Horsepower: 140 HP
• Years: 2004, 2005, 2006, 2007, 2008
• Original Equipment Part Numbers: 761437-5005s, 035145702K

At Gap Turbos, our reconditioned units undergo a rigorous process. Each turbocharger is fully stripped, meticulously cleaned, and inspected for wear and damage. All critical wear components, including bearings, seals, and thrust parts, are replaced with new, high-quality equivalents. The CHRA is then precisely balanced to OEM specifications on a high-speed VSR (Vibration Sorting Rig) machine. Finally, the VNT mechanism and electronic actuator are calibrated on a flow bench to ensure optimal performance and correct boost control, matching the original manufacturer’s settings. We stand by the quality of our reconditioned turbos, offering a cost-effective and reliable alternative to new units. We also offer new exchange turbos if preferred, and our Birmingham workshop provides a comprehensive fitting service, including DPF and catalytic converter cleaning if required to prevent repeat failures.

For a competitive quote or to discuss your specific requirements, please contact us. All our reconditioned turbochargers come with a comprehensive warranty for your peace of mind.

Specifications

Vehicle fitment

• Audi A4 2.0 TDI

Common faults & troubleshooting

• Loss of power / limp mode: Often indicates seized VNT vanes or a faulty electronic actuator, preventing correct boost pressure.
• Excessive blue smoke from exhaust: Typically points to worn CHRA bearings or seals allowing oil into the exhaust or intake.
• Whining or grinding noise from engine bay: Suggests significant wear in the turbo’s CHRA bearings or contact between the compressor/turbine wheel and housing.
• Turbo lag or delayed boost: Could be a sign of a failing actuator, sticking VNT mechanism, or a boost leak in the intake system.
• Engine management light illuminated: A diagnostic scan will likely reveal fault codes related to boost pressure regulation or actuator control, often P0299 (underboost) or P0234 (overboost).

Fitting notes for this unit

• Oil feed pipe: Always replace the oil feed pipe and banjo bolts; these are prone to carbon build-up restricting oil flow, a primary cause of premature turbo failure.
• Oil drain pipe: Ensure the oil drain pipe is clear and unrestricted; blockages can cause oil to back up into the CHRA, leading to seal failure and smoke.
• Gaskets and washers: Use all new gaskets and sealing washers during installation; re-using old gaskets can lead to exhaust leaks or boost leaks.
• Priming: Before starting the engine, prime the turbocharger by filling the oil inlet with clean engine oil and cranking the engine (without starting) until oil pressure builds.
• Boost system inspection: Thoroughly inspect all boost pipes and intercooler for cracks or loose connections; even small leaks can cause under-boost issues.
• DPF/Catalytic Converter: If the previous turbo failed catastrophically, inspect and potentially clean or replace the DPF and catalytic converter for debris and blockages to prevent back pressure issues.

Alternative part numbers

This turbo is also referenced by:

• 035145702K — Audi Turbocharger OEM 035145702K (Audi A4 2.0 TDI, BPW, 140hp)

Frequently asked questions