Description
This is a reconditioned Garrett GT18V turbocharger for the Nissan Almera Tino 2.2 dCi (YD22DDTI engine) models produced between 2003 and 2006. It is a direct, calibrated replacement for OEM part number 14411AW40A and alternative part number 727477-5006s.
The GT18V is a variable nozzle turbine (VNT) unit, which is critical for achieving the correct performance, fuel economy, and emissions standards on the YD22DDTI diesel engine. The VNT mechanism adjusts exhaust gas flow over the turbine wheel in real-time, providing rapid boost response at low engine speeds without compromising high-RPM performance. Common failure modes for this specific turbocharger are directly related to its design and the engine’s characteristics. The most frequent issue we see at Gap Turbos is the seizure of the VNT mechanism due to excessive carbon and soot build-up, often exacerbated by a faulty or clogged EGR system. This leads to the vanes sticking in one position, causing either a lack of power (underboost) or, more dangerously, an overboost condition that puts the engine into ‘limp mode’ to protect itself. Another common fault is the failure of the electronic actuator that controls the VNT mechanism. Less common, but still prevalent, are standard turbo failures such as bearing wear from oil contamination or starvation.
Our reconditioning service for this unit is comprehensive. Each turbo is completely disassembled and all components are chemically cleaned and inspected. The core housing, turbine housing, and compressor housing are checked for cracks and warping. The rotating assembly (CHRA) is rebuilt with new journal and thrust bearings and balanced on our VSR machine at speeds exceeding 150,000 RPM. Critically, the VNT nozzle ring assembly is stripped, cleaned, and rebuilt to ensure smooth, unrestricted movement. The reassembled turbo is then calibrated on a flow bench to guarantee its performance matches or exceeds the original Garrett specification. We supply this unit on an exchange basis and can also offer a full fitting service at our Birmingham workshop.
What this turbocharger fits
- Make: Nissan
- Model: Almera Tino
- Engine: 2.2 dCi
- Engine Code: YD22DDTI
- Power: 136 HP
- Years: 2003, 2004, 2005, 2006
- Fuel: Diesel
All our reconditioned turbochargers are supplied with a comprehensive warranty. Please contact Gap Turbos for a firm quote and to confirm availability.
Specifications
| Frame | GT18V |
|---|---|
| Engine code(s) | YD22DDTI |
| Horsepower | 136hp |
| Year range | 2003-2006 |
| Fuel | Diesel |
| OEM number | 14411AW40A |
| Alternative number(s) | 727477-5006s |
| Condition | Reconditioned |
Vehicle fitment
- Nissan Almera Tino 2.2 dCi
Common faults & troubleshooting
- Complete loss of power and engine management light: This is the classic symptom of a seized VNT mechanism causing an overboost or underboost fault code (e.g., P0234), forcing the vehicle into ‘limp home’ mode.
- High-pitched whistling or siren noise: This indicates worn bearings within the turbo’s core assembly or a potential boost leak in the pipework between the turbo and the intercooler.
- Excessive black smoke from the exhaust: A failing turbo not providing enough boost pressure will cause the engine to run rich, resulting in unburnt fuel being emitted as black smoke.
- Increased oil consumption and blue smoke: This points to failed oil seals inside the turbo, allowing engine oil to leak into either the exhaust or intake system and be burned.
- Intermittent power loss: This can be a sign of a failing electronic actuator or a VNT mechanism that is beginning to stick but has not yet seized completely.
Fitting notes for this unit
- Replace the oil feed pipe: It is mandatory to replace the oil feed pipe and its banjo bolts when fitting this turbo. The old pipe becomes restricted with carbonised oil, which will starve the new unit and cause immediate failure.
- Prime the new unit: Before starting the engine, disable the fuel supply and crank the engine in 15-second intervals until the oil pressure light extinguishes. This ensures pressurised oil reaches the bearings before the turbo spins at high speed.
- Use all new gaskets: Do not reuse any old gaskets, especially the oil drain and exhaust manifold gaskets. Using the new, supplied gaskets is essential to prevent oil and exhaust leaks.
- Clean the intake system: Thoroughly clean the intercooler and all boost pipes to remove any oil residue or debris from the previous turbo failure. Failure to do so can result in the new turbo ingesting debris.
- Check the EGR system: The YD22DDTI engine is prone to EGR-related issues. Inspect and clean the EGR valve and cooler, as a clogged system is the primary cause of the soot that damages the VNT mechanism.
- Perform an oil and filter change: You must drain the old engine oil and replace it along with a new, high-quality oil filter. Use only the manufacturer-specified grade of oil for this engine.
Alternative part numbers
This turbo is also referenced by:
727477-5006s— GT18V Turbocharger OE 727477-5006s (Nissan Almera Tino 2.2 dCi, YD22DDTI, 136hp)
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?
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