Description
This listing is for a reconditioned Garrett GT17V turbocharger, specifically designed for the BMW 320d E46 models manufactured between 2001 and 2005, featuring the M47TU 150HP diesel engine. This unit is a direct replacement for the original equipment, restoring your vehicle’s performance and efficiency.
As a variable nozzle turbine (VNT) turbocharger, the GT17V utilises movable vanes to optimise exhaust gas flow, ensuring efficient boost across the engine’s RPM range. Common failure modes for this specific turbocharger often involve the variable vane mechanism seizing due to carbon and soot build-up from the exhaust gases. This leads to symptoms such as reduced power, ‘limp mode’, and poor fuel economy. Electronic actuator faults are also prevalent, causing incorrect boost pressure regulation. Additionally, like many turbos, premature bearing wear within the CHRA (Centre Housing Rotating Assembly) can occur, typically caused by oil starvation or contamination, manifesting as excessive noise or smoke.
What this turbocharger fits
This reconditioned GT17V turbocharger is suitable for:
- Vehicle: BMW 320d E46
- Engine Code: M47TU
- Horsepower: 150HP
- Year Range: 2001-2005
- Fuel Type: Diesel
- OEM Part Number: 7790994I
- Alternative Part Number(s): 731877-5009s
At Gap Turbos, a Birmingham specialist since 1986, we meticulously recondition these units. Our process involves a full strip-down, thorough cleaning of all components, replacement of worn parts with new, high-quality equivalents, and precise balancing of the CHRA to OEM specifications. The VNT mechanism and electronic actuator are calibrated and tested to ensure optimal operation. We offer this unit on an exchange basis, and our workshop facilities can also provide a professional fitting service, including full system checks and cleaning of associated pipework to prevent future issues.
For current pricing, lead times, or to discuss fitting options, please contact us directly. All our reconditioned turbochargers come with a comprehensive warranty for your peace of mind.
Specifications
| Frame | GT17V |
|---|---|
| Engine code(s) | M47TU |
| Horsepower | 150hp |
| Year range | 2001-2005 |
| Fuel | Diesel |
| OEM number | 7790994I |
| Alternative number(s) | 731877-5009s |
| Condition | Reconditioned |
Vehicle fitment
- BMW 320d E46
Common faults & troubleshooting
[“Loss of power or ‘limp mode’: The variable vane mechanism is likely seized due to carbon build-up, preventing the turbo from generating sufficient boost.”, ‘Whistling or grinding noise from the engine bay: Indicates worn CHRA bearings or impeller contact with the housing, requiring immediate attention to prevent further damage.’, ‘Excessive blue or black smoke from the exhaust: Blue smoke suggests oil seal failure within the turbo, while black smoke can point to over-fuelling or a boost leak.’, ‘Check Engine Light (CEL) with boost-related fault codes: Often points to a faulty electronic actuator or a leak in the intake/boost system.’, ‘Noticeable turbo lag or slow boost build-up: The VNT mechanism may be sluggish or sticking, or there could be a vacuum leak affecting actuator operation.’]
Fitting notes for this unit
[‘Always replace the oil feed pipe and oil drain pipe gaskets to prevent oil leaks and ensure adequate oil supply to the turbocharger.’, ‘Prior to the first engine start, prime the new or reconditioned turbocharger with fresh engine oil by pouring oil into the oil feed port and hand-spinning the compressor wheel.’, “Ensure all vacuum lines connected to the turbocharger’s electronic actuator are correctly routed, securely fitted, and free from any cracks or leaks.”, ‘Thoroughly inspect and clean the intercooler, intake pipework, and exhaust manifold for any debris, oil residue, or carbon deposits that could damage the new turbo.’, “Use new manifold gaskets and tighten all bolts, especially those connecting the turbo to the manifold and downpipe, to the manufacturer’s specified torque settings.”, ‘Perform a full engine oil and filter change using the correct grade and specification of oil for the M47TU engine, as oil quality is critical to turbo longevity.’]
Alternative part numbers
This turbo is also referenced by:
731877-5009s— GT17V Turbocharger OE 731877-5009s (BMW 320d E46, M47TU, 150hp)
Need this turbo cleaned or reconditioned?
Many turbo faults are actuator-only or VNT vane carbon buildup, not a failed core. We strip, ultrasonically clean, rebuild, and balance to OEM tolerances with a 24-month parts and labour warranty.
Turbo Reconditioning →Need to speak to a turbocharger expert?
Send your reg, a photo of the existing part, and a brief description of the fault. We will respond same day.
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