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Turbocharger K04-001 for 1.8T engines
The new K04-001 turbocharger is designed as an upgrade for select systems with a K03-052 or K03-053 turbocharger in 1.8T engines. It features water and oil cooling, a plain bearing, and a 270-degree thrust bearing.
When replacing a K03 turbocharger, the larger K04-001 compressor inlet must be considered. The K04-001 inlet diameter is 48.7 mm, while the K03-052 and K03-053 are 45 mm. Modification of the intake hose and the use of silicone hose for the intake connection may be necessary.
Application
- Audi A3 with AGU, ALN, ARZ 110 kW/150 HP engines, years 1996–2003.
- Audi A3 with AUQ, ARZ, APP 132 kW/180 HP engines, years 1996–2003.
- Audi TT with AUQ engine 132 kW/180 HP, years 1998–2006.
- Seat Leon with AJQ, APP, ARY, AUQ 132 kW/180 HP engines, years 1998–2006.
- Skoda Octavia with AUQ engine 132 kW/180 HP, years 2001–2005.
- Volkswagen Golf, Bora and Jetta with AUQ, ARZ engines, years 2000–2009.
- Volkswagen New Beetle with 1.8L-5V engine, years 2000–2005.
The source also indicates application for the Audi A3, Audi TT, Volkswagen Beetle, and Seat Ibiza with 4EB, 4EA, and 4EC engines. Before purchasing, compare the installed turbocharger number and engine details with your vehicle's data.
Technical data
| Turbocharger model | K04-001 |
|---|---|
| Type | turbocharger for 1.8L-5V engines |
| Engine codes | AJQ, APP, AUM, AUQ, ARY |
| Cooling | water and oil |
| Bearing type | sliding bearing/floating bearing |
| Thrust bearing | 270 degrees |
| Compressor inlet | 48.7 mm |
| Declared turbine power in source data | 400 HP |
| Package dimensions | 30 × 27 × 24 cm |
| Package weight | 6900 g |
Materials listed in the specifications
- Turbine housing: ductile iron QT450-10, temperature resistance specified in the source up to 700°C.
- Turbine wheel: K418 alloy steel element, oxidation and temperature resistance specified in the source up to 900°C.
- Compressor housing: ZL104 aluminum.
- Compressor wheel blades: cast aluminum.
OEM/OE and part numbers
Before purchasing, please confirm the part number matches the original turbocharger. The source provides the following OEM/OE and part numbers:
06A145713B, 06A145713M, 06A145713L, 145713, K04-001, K03-052, K03-053, 53049500001, 53039700052, 53039880052, 53039880094, 5303-970-0053, 53039880053, 53039880058, 06A145681H, 06A145702P, 06A145704S, 145681, 145702, 145704
Additionally, the source data lists: 5304-950-0001, 5304 950 0001, 53049887501, 5304-988-7501, 5304 988 7501, 06A-145-705HP, 06A145705HP, 5303 970 0052, 5303-970-0052, 5303 988 0052, 5303-988-0052, 5303 988 0094, 5303-988-0094, 06A145704T, 06A145713D, 06A145713DX, 06A145713DV, 06A145713F, 06A145713FX, 8299299564, 5303 970 0053, 5303-988-0053, 5303 988 0058, 5303-988-0058, 06A145713B, 06A145713L, 06A145713M.
Important assembly information
- This product is an upgrade from K04-001 for K03-052 and K03-053 turbochargers; it is not intended for K04-022.
- When installing in place of the K03, modification of the intake pipe may be required due to the larger compressor inlet.
- Before installing a new turbocharger, the cause of the failure of the previous one must be determined and eliminated, including problems with the oil supply, foreign bodies in the intake or faulty crankcase ventilation.
- The source recommends professional installation.
Helpful information before purchasing
This is the K04-001 turbocharger for select Audi, Volkswagen, Seat, and Skoda vehicles with 1.8T engines. If replacing the K03-052 or K03-053, you'll need to check the part number, engine code, and intake hose connection location and method.
The most important information
- K04-001 is an improvement on K03-052 and K03-053, but not on K04-022.
- The compressor inlet is 48.7 mm; for K03-052 and K03-053 it is 45 mm.
- The turbocharger has water and oil cooling and a plain bearing.
- The application covers selected versions of 1.8T engines with codes AJQ, APP, AUM, AUQ and ARY.
Contents of the set
The offer includes the turbocharger shown in the original specification. The detailed scope of additional components should be verified prior to purchase based on the offer photo and the specifications for the specific variant.
Frequently asked questions
How do I check if a part fits?
Please compare the original turbocharger part number with K04-001, K03-052, K03-053 and OEM/OE numbers provided in the description and also check the car model, year, engine code and required intake connection.
Is the product ready for assembly?
When used in place of the K03, modifications to the intake tract may be necessary as the K04-001 intake is larger. Installation should be performed by a specialist.
Does the offer include a complete set?
The source confirms the turbocharger as part of the offer, but does not provide a detailed list of additional kit components.
Why is it worth buying from Multigenus?
- Ships from European warehouse for selected offers
- Final price within the EU, excluding customs and import surcharges
- 14 days to return in accordance with EU law
- Pre- and post-purchase support
- The product is described in a way that makes it easier to choose the right variant