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Audi A4 A6 1.8T AEB/ ANB 53049880015 K04-015 K03 Upgrade Turbocharger



The K04 installs in the factory turbocharger location and uses all factory plumbing include intake, downpipe, exhaust manifold, and oil/coolant lines. Installation is straight forward, simply remove the factory turbocharger and the K04 drops right in.
The K04 turbocharger features a larger compressor and turbine wheel which provides for increased horsepower and torque over factory. Flows more volume and sustains higher boost pressures than the standard K03


Compatible for AUDI A4 1.8T AEB/ANB/APU/AWT20v/AVJ 95 - 99
Compatible for AUDI A4 Quattro 1.8T AEB/ANB/APU/AWT/AVJ/BEX 99 -
Compatible for AUDI A4 Upgrade 1.8T   95 -
Compatible for AUDI A6 1.8T AEB/ANB/APU/AWT 97 - 99
Compatible for AUDI A6 Quattro 1.8T AEB/ANB/APU/AWT 99 -
Compatible for VW PASSAT 1.8T AEB/ANB/APU/AWT 99 -
Compatible for VW PASSAT 1.8T upgrade 99 -


Turbo number:
53049880015 53049700015
53039880005 53039700005
53039880029 53039700029
53039880025 53039700025
53039880073 53039700073
O.E.M number:
058145703L 058145703LX 058145703LV
058145703J 058145703JX 058145703JV
058145703E 058145703H 06A145703B
058145703N 058145703K 078145703B
Turbo model: K04, K04-0015
Engien code: AEB/ANB/APU/AWT20v/AVJ
Cooling Type:Water Cooling
Bearing Type: Floating Bearing
Hosepower: Up to 250HP
Thrust bearings: 270 Degrees
Condition: Brand New
Warranty: 2 years warranty for any manufacturing defect
Accessories: You will get exactly as shown in the picture above


1. 100% BALANCING TEST:This Turbocharger you will receive has been balanced using the VSR machine technology.

2.Turbine housing:Ductile iron QT450-10 shell with high-temperature resistance up to 700 degrees Celsius.

3. Steel Turbine Wheel:Made from the special K418 alloy to achieve high oxidation resistance and stability under high temperatures up to 900 degrees Celsius.

4. Compressor housing:ZL104 aluminum.

5. Compressor wheel/blades:

- Cast Aluminium with good gas tightness and corrosion resistance.

- The impeller is colored by five-axis CNC milling, the shape of the blade is more perfect, and the precision is higher.

Installation Suggestions

We highly recommend you make sure the points below before installing:
1.Replace the air filter: if the if the air filter is not replaced may cause the compressor wheel damage.
2.Replace the engine oil: Because floating bearing and turbocharger will be damaged by impurities in the old oil.
3.After large overhaul, the engine cannot be replaced with a new turbocharger because there are too much impurities in oil after overhauling which will damage the replacement turbocharger immediately.
Please run the old turbocharger for 7-10 days and then replace to new turbocharger and new engine oil.


*Please check the Turbo Model, Turbo Part Number and OEM Part Number on your original Turbo to make sure this turbo is the right one for your engine.

Chase Classic Cars 07708865570