This hybrid turbo for engine Bmw 2.0 Diesel The M47 D20 (204D1) features d'an internal mechanism designed to adjust the flow rate' d'compressor air'. The three models on offer all feature an MFS compressor wheel Performance, a 360° bearing stop and high-speed balancing on a Cimat VSR test bench.
The documented assignments relate to several Bmw 3 Series E46 and 5 Series E39, saloon and Touring models. Compatibility must be confirmed using the turbo’s part number d'origin'.
This assembly uses an MFS wheel Performance 37.91 / 49.00 mm. Its 6+6 configuration is designed to optimise the compressor’s performance and air-flow capacity, without compromising the engine’s ultimate power output.
The Stage 2 pairs a wheel oversized to a casing d're-profiled intake'. This adaptation makes it possible to d'accommodate the new geometry and may alter the flow rate' d'air flow and the behaviour of the turbocharger, depending on the selected settings'.
The Stage 2+ is fitted with an MFS wheel Performance 41.58 / 56.02 mm and a casing d'adapted admission'. Its specific dimensions can affect the compressor’s flow rate and response; the choice of stage must therefore be consistent with the engine’s overall configuration.
A hybrid turbo retains a suitable turbocharger design for to receive internal components that differ from the configuration d'origin'. Depending on the modification, changes may relate to the compressor wheel, its dimensions, the geometry of its blades, the casings, the thrust bearing or the balancing.
The aim is d'adjust the compression capacity and flow rate' d'air'. However, a hybrid turbo is not defined solely by the appearance of its impeller: the dimensions, aerodynamics, machining of the housings and the overall coherence of the unit are all crucial factors.
MFS stands for ‘Milled From Solid’, meaning a wheel machined from a solid block. This term describes the manufacturing process, but does not in itself guarantee an increase in throughput d'air'.
A standard MFS wheel can retain a geometry equivalent to that d'origin'. An MFS wheel Performance may have a diameter, profile or blade configuration suited to the intended purpose. On this product, the wheels shown have a 6+6 configuration and dimensions specific to each stage.
A standard MFS wheel can be just as shiny as an MFS wheel Performance. It is not its appearance that determines its performance, but its geometry and its ability to move more d'air'. A higher flow rate can help to generate more power when the engine is set up and managed appropriately, although this alone does not guarantee a specific result.
The compressor wheel draws in and then compresses the air admitted by the engine. Its diameter, profile, height, width and the arrangement of the blades influence its aerodynamic behaviour and the amount d'the amount of air it can move under certain conditions'.
The result also depends on the compressor housing, the turbine assembly, the boost pressure and the engine tuning. A wheel with a larger diameter therefore does not automatically guarantee better performance and may affect the response time as well as the range d'optimal use'.
The 360° stop, documented for each stage, helps to distribute the axial forces around the axis. It helps to ensure the mechanical integrity of the assembly, without making the turbo immune to poor lubrication or incorrect fitting.
The rotor is balanced at high speed, at 150,000 rpm on a Cimat VSR test bench. The aim of this operation is to minimise vibrations and mechanical stresses during operation.
The farm d'A hybrid turbo may require adjustments to the engine mapping, boost pressure and fuel supply'. Systems d'intake, cooling, dThe exhaust system, as well as the clutch or gearbox, must also be checked depending on the level of preparation.
The wastegate must be adjusted during the fitting and remapping of the ECU. A hybrid turbo does not automatically guarantee a power increase without appropriate tuning of the entire engine system.
⚠️ WARNING — IMPORTANT BEFORE ASSEMBLY
Before installation, identify and rectify the cause of the previous fault. Check the lubrication circuit, the supply and the return d'oil, as well as the cleanliness of the ducts'.
Check the intake and ensure there are no foreign objects present. Carry out the priming in accordance with the relevant guidelines and follow the manufacturer’s instructions. The wastegate must be adjusted during the installation and tuning of the engine management system.
If a lubrication fault is not rectified, it may lead to the turbocharger failing again.
Check the part number marked on the turbocharger d'original', then compare it with the OEM and manufacturer's specifications in this data sheet. Also check the model, generation, body style, engine type and power output in hp, the assembly period and the engine code. Having the same engine is not always enough to confirm compatibility.
⚠️ Check your turbo’s part numbers
Before placing your order, Compare the part number on your turbocharger d'origin' using the references given in this fact sheet. Having the same motor does not always guarantee compatibility.
If you are in any doubt, please contact us with the full part number from your turbocharger.
Reference: AG15-149
Brand: ALFI TURBO ///
Year: February 1998 to September 2003Power: 115, 116, 129 and 136 hpdisplacement: Not specifiedEngine code: M47 D20 (204D1)Warranty: 2 years
Reference: 2092-020-011
Brand: ALFI TURBO ///
700447-3, 700447-1, 700447-5, 700447-9, 700447-8, 700447-35, 700447-2, 700447-7, 700447-4, OEM: 11127791552, 11122249678
ALFI TURBO specialises in the sale of turbochargers for for cars, commercial vehicles, heavy goods vehicles, construction machinery, agricultural machinery and boats: new turbochargers, remanufactured units, hybrid turbochargers, Cartridge and turbocharger spare parts. Over 20,000 items are available.
The turbocharger plays a vital role in the operation and performance d of a turbocharged engine. When a turbocharger needs replacing, it is important d to identify the exact part number before ordering.
ALFI TURBO supplies turbochargers for for a wide range of makes and engine types: cars, commercial vehicles, heavy goods vehicles, construction machinery, tractors and agricultural machinery, as well as various marine applications.
You can search for your turbo based on the vehicle or application, engine type, engine code, or directly using d an OEM or manufacturer part number found on your old turbocharger.
Browse our range of new turbochargers for for diesel and petrol engines. ALFI TURBO has over 5,500 new turbochargers in stock for covering a wide range of makes, engine types and turbocharger part numbers.
View new turbochargers →A standard exchange turbo allows you to replace a turbocharger whilst returning the old part where a deposit is required. Our catalogue includes numerous part numbers for from various makes and engine types.
View standard exchange turbochargers →Hybrid turbos are designed for set-ups requiring greater air flow d and higher performance potential than a standard set-up. Specifications depend on the turbo, its tuning and the engine configuration.
View hybrid turbos →The turbo Cartridge, also known as the central turbo cartridge, comprises the main rotating components of the turbocharger. ALFI TURBO has over 6,000 Cartridge for turbo part numbers.
View turbo Cartridge →Our catalogue covers a wide range of d applications fitted with d a turbocharged engine.
A single engine type may have been fitted with several different turbochargers depending on theYear, power output, engine version or technical evolution.. The application alone is therefore not always sufficient for to accurately identify the correct turbo.
Before ordering, note down the part numbers shown on the identification plate d of your old turbocharger. This may be d an OEM part number or d a part number from the turbo manufacturer.
Compare these part numbers with those listed on our product pages.. If in doubt, our team can help you verify the part number you are looking for before you place your order.
A loss of power, an unusual whistling noise, oil consumption d, abnormal smoke or poor engine performance may be linked to a turbocharger fault.
However, a fault that appears to be turbo-related may also stem d from a lubrication issue, d from contaminated oil, d from a foreign object, from the intake or exhaust systems, or d from another engine peripheral component.
It is therefore important to investigate the cause of the fault before fitting a new turbo or a new Cartridge.
Since 2012, ALFI TURBO has been assisting private individuals and professionals in identifying and replacing turbochargers.
A turbocharger failure may be the result d of another engine problem. Before fitting d a new turbo or Cartridge, identify and rectify the cause of the original fault to d avoid d damaging the new part.
Do you have a turbocharger part number but can’t find the matching part? Are you unsure which part number to choose? Send us the details from your old turbo so that our team can help you identify the part you’re looking for.
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