This left-hand hybrid turbo is based on d a K04-025 architecture adapted for internal tuning. Depending on the tuning package selected, it is fitted with a high-flow MFS compressor wheel, a 360° bearing stop and additional modifications to the wheels and housings.
It is designed for installation without any external modifications. However, compatibility must be confirmed based on the original turbo part number d and the relevant OEM or manufacturer part numbers.
Available upgrades — Stage 1, Stage 2 and Stage 3
Stage 1
Compressor wheel: MFS high-flow
Thrust bearing system: 360° thrust bearing
Balancing: high-speed at 150,000 rpm on a Cimat VSR test bench
This modification primarily affects the compressor section in order d to adapt the air flow rate d to. The 360° thrust bearing helps to distribute the rotor’s axial forces more evenly.
Stage 2
Compressor impeller: MFS high-flow oversized
d ’ intake housing: re-profiled for accommodate the new impeller oversized
Bearing system: 360° bearing
Balancing: high-speed balancing at 150,000 rpm on a Cimat VSR test bench
oversized ’s compressor impeller requires a specially adapted intake casing d. This combination is designed to alter the compression capacity and air flow rate d, with performance that also depends on the engine configuration.
Stage 3
Compressor impeller: MFS high-flow oversized
Intake housing d: reprofiled for to accommodate the new impeller oversized
Thrust system: 360° bearing thrust
Turbine impeller: high-flow oversized
Turbine casing: re-profiled for ly to accommodate the new impeller oversized
Balancing: high-speed balancing at 150,000 rpm on a Cimat VSR test bench
This modification alters both the compressor and turbine sides. Resizing the impellers and re-profiling the housings can alter both flow rate and response time; the result depends on the overall engine modification.
What is a hybrid turbo?
A hybrid turbo retains an architecture suited to the vehicle whilst incorporating internal modifications. Depending on the upgrade package, these may involve the compressor wheel, the turbine wheel, the housings, the thrust bearing system and the balancing.
The aim is to d ‘adapt the compression capacity and the air flow d ’ of the turbocharger. A hybrid turbo is not defined solely by the appearance of its impeller: its geometry, the adaptation of the housings and the overall coherence of the assembly are crucial.
MFS compressor wheel: standard or ‘ Performance ’?
MFS stands for ‘Milled From Solid’, meaning a wheel machined from a solid block. This manufacturing process alone does not guarantee an increase in air flow d. A standard MFS wheel can retain a geometry equivalent to that d of the original.
An MFS impeller Performance is based on a geometry tailored to the tuning objective. A standard MFS impeller can be just as polished as an MFS impeller Performance. It is not its appearance that determines its performance, but its geometry and its ability to move more d air. A higher airflow can contribute to power output with appropriate engine tuning, though it does not, on its own, guarantee a specific result.
Why does the geometry of the blades influence the air flow rate d?
The compressor impeller draws in and then compresses the air. Its diameter, profile, height, width and blade arrangement influence its aerodynamic behaviour. A suitable geometry can move more d air under certain conditions, but the result also depends on the housings, the turbine, the boost pressure and the mapping. A larger impeller therefore does not automatically guarantee better performance and may alter the response time.
Reliability and balancing of the hybrid turbo
The 360° bearing stop documented at for for each stage distributes axial forces over a wider surface area. The rotor benefits from d'high-speed balancing at 150,000 rpm on a Cimat VSR test bench to minimise vibrations and mechanical stresses. However, this balancing does not compensate for faults in assembly, lubrication or d oil supply.
Engine remapping and preparation
The engine management system must be adapted for to make full use of the hybrid turbo’s characteristics. The mapping, boost pressure and wastegate settings must be checked. Depending on the tuning, the fuel injection, exhaust system, intake air cooling d and transmission may also require checking or adjustment.
Turbo part numbers
OEM part numbers
078145703M
078145703MX
078145703MV
078145701M
Manufacturer part numbers
53049700025
53049880025
K04-025
Compatible vehicles and applications
No detailed vehicle specifications are documented in the available information. It is essential to check the part numbers marked on the original turbo d.
Additional technical specifications
Product type: hybrid turbo
Position: left-hand side
Configuration: external Installation without modification
Fitting instructions
⚠️ WARNING — IMPORTANT BEFORE INSTALLATION
Before installation, identify and rectify the cause of the previous fault. Check the lubrication circuit, the oil supply and return d as well as the cleanliness of the pipes.
Check the inlet for any foreign objects. Carry out priming in accordance with the applicable recommendations and follow the manufacturer’s instructions.
A lubrication fault that is not rectified may lead to further damage to the turbocharger.
How do you identify the correct turbo?
Check the turbo’s part number d – the original, OEM and manufacturer’s part numbers, as well as the make, model, generation, body style, engine type, power output, mountingYear and engine code. An identical engine type does not always guarantee compatibility.
⚠️ Check your turbo’s part numbers
Before ordering, compare the part number marked on your original turbo d with the part numbers listed in this specification sheet. An identical engine specification does not always guarantee compatibility.
If in doubt, please contact us, providing the full part number from your turbocharger.
