Description

This listing is for a reconditioned Garrett GT16V turbocharger, specifically designed for the Audi A3 140HP TDI (BKD engine) manufactured between 2003 and 2009. This unit offers a cost-effective and reliable solution for restoring your vehicle’s performance and efficiency.

The GT16V is a variable nozzle turbine (VNT) turbocharger, meaning it utilises adjustable vanes to optimise exhaust gas flow across the turbine wheel. This technology allows for improved low-end torque and reduced turbo lag, providing a responsive driving experience across the rev range. Common failure modes for this specific turbocharger often involve the VNT mechanism seizing due to carbon and soot build-up, particularly in vehicles used for short journeys or with infrequent oil changes. Electronic actuator faults are also prevalent, leading to incorrect boost pressure regulation and associated fault codes. Furthermore, like all turbochargers, the central housing rotating assembly (CHRA) bearings can wear over time due to oil contamination or insufficient lubrication, resulting in excessive noise, oil consumption, and ultimately, turbocharger failure.

At Gap Turbos, we meticulously recondition these GT16V units in our Birmingham workshop. Our process involves a full strip-down, thorough cleaning, inspection of all components, replacement of worn parts with high-quality equivalents, and precise balancing of the CHRA. Each reconditioned turbocharger undergoes rigorous testing to ensure it meets or exceeds OEM specifications for performance and reliability.

What this turbocharger fits

This reconditioned turbocharger is a direct fit for:

• Vehicle: Audi A3 TDI R4
• Engine Code: BKD
• Horsepower: 140 HP
• Year Range: 2003-2009
• Fuel Type: Diesel
• OEM Part Number: 03G253014F
• Alternative Part Numbers: 751851-5003s

We understand the importance of a quick and reliable repair. As well as offering reconditioned units, we can also provide new exchange turbochargers for this application. Should you prefer, we offer a comprehensive fitting service at our workshop, which includes thorough cleaning of all associated pipework, intercooler, and oil lines to prevent premature failure of the new or reconditioned unit. This is a critical step often overlooked, but vital for long-term reliability.

All reconditioned turbochargers supplied by Gap Turbos come with a comprehensive warranty for your peace of mind. For a tailored quote, lead time information, or to discuss our fitting services, please contact us directly. Our experienced technicians are ready to assist you.

Specifications

Vehicle fitment

• Audi A3 TDI R4

Common faults & troubleshooting

• Loss of power, especially at higher RPMs: Often indicates a seized variable nozzle turbine (VNT) mechanism or a faulty electronic actuator, preventing correct boost pressure generation.
• Excessive blue or grey smoke from the exhaust: A common symptom of worn CHRA bearings, allowing engine oil to leak into the exhaust system and burn off.
• Loud whining, whistling, or grinding noise from the engine bay: Typically points to internal bearing wear or damage to the compressor or turbine wheels within the turbocharger.
• Noticeable turbo lag or delayed power delivery: Can suggest the VNT mechanism is sticking, or the actuator is not responding quickly enough to engine demands.
• Engine management light illuminated with underboost (P0299) or overboost (P0234) fault codes: Strongly indicates an issue with the turbocharger’s boost control system, likely the actuator or VNT functionality.

Fitting notes for this unit

• Replace Oil Feed & Drain Pipes: Always fit a new oil feed pipe and ensure the oil drain pipe is clear and free from blockages. Also replace all associated gaskets.
• Prime the Oil System: Before the first start, disconnect the fuel supply (or crank without starting) to allow the engine to build oil pressure and prime the turbocharger’s bearings.
• Thorough Cleaning: Clean the intercooler, intake manifold, and all associated boost pipes thoroughly to remove any metal debris, oil, or carbon from the previous turbo failure.
• Check DPF/Catalytic Converter: Inspect the exhaust system, particularly the DPF or catalytic converter, for blockages caused by previous turbo failure, as this can impede exhaust flow and damage the new unit.
• Torque Specifications: Adhere strictly to manufacturer torque specifications for all turbocharger and exhaust manifold bolts to ensure proper sealing and prevent leaks.
• Actuator Connection: Ensure the electronic actuator’s electrical connector is clean, secure, and correctly plugged in, and that any vacuum lines (if applicable) are correctly routed and free from leaks/damage.

Alternative part numbers

This turbo is also referenced by:

• 751851-5003s — GT16V Turbocharger OE 751851-5003s (Audi A3 TDI R4, BKD, 140hp)

Frequently asked questions