New turbo A4 A6 Expo Superb Pasat 1.8t 53039880029 53039700029 53039880025 53039700025 5303-988-0029 5303-970-0029 5303-988-0025 5303-970-0025058145703J 058145703K 058145703N 058145703Q 058145703
€170.73
In stock
New turbo A4 A6 Expo Superb Pasat 1.8t 53039880029 53039700029 53039880025 53039700025 5303-988-0029 5303-970-0029 5303-988-0025 5303-970-0025058145703J 058145703K 058145703N 058145703Q 058145703
Product Details
New Turbocharger Replacement – VAG 1.8T Longitudinal (B5/B6/B7/C5)
Restore the smooth acceleration and factory efficiency of your 1.8 Turbo engine with this brand-new high-quality replacement turbocharger. Engineered for the iconic 20-valve longitudinal powerplant, this unit is a precision-manufactured "Plug & Play" solution designed to meet or exceed OEM performance standards.
Vehicle Compatibility & Power Output
This turbocharger is a direct 1:1 replacement for the following models with longitudinal engine layouts:
| Manufacturer | Model | Engine / Power | Engine Codes |
| Audi | A4 (B5/B6/B7) | 1.8 T 110kW/150PS – 132kW/180PS | ANB, AEB, APU, ARK, AJL, AVJ, BFB |
| Audi | A6 (C5) | 1.8 T 110kW/150PS – 132kW/180PS | ANB, AEB, APU, ARK, AWT, AJL |
| Seat | Exeo | 1.8 T 110kW/150PS | CFMA |
| Skoda | Superb I | 1.8 T 110kW/150PS | AWT |
| Volkswagen | Passat (B5) | 1.8 T 110kW/150PS – 125kW/170PS | ANB, AEB, APU, ARK, AWT, AWM |
Technical Specifications & Cross-Reference
Verify the compatibility using the identification numbers from your original turbocharger:
| Reference Type | Compatible Part Numbers |
| BorgWarner / KKK | 53039880029, 53039700029, 53039880025, 53039700025 |
| Alternative Formats | 5303-988-0029, 5303-970-0029, 5303-988-0025, 5303-970-0025 |
| VAG OE Numbers | 058145703J, 058145703K, 058145703N, 058145703Q |
| OE Suffixes | 058145703JV, 058145703JX, 058145703NV, 058145703QX (etc.) |
Key Product Features
- 100% Brand New Component: This is not a remanufactured unit. All housings, wheels, and internal parts are brand new and factory-tested.
- VSR High-Speed Balancing: The core assembly is balanced at extreme RPMs to ensure quiet operation and prevent premature bearing wear caused by harmonics.
- Heat-Resistant Alloy Housing: Constructed from high-nickel cast iron to withstand the intense thermal cycles of the 1.8T 20V engine.
- Factory-Set Wastegate: The actuator is pre-calibrated to ensure correct boost pressure, protecting your engine and preventing ECU "Underboost" errors.
Critical Installation Requirements
To ensure the longevity of your new turbocharger and protect your warranty:
- Oil Feed Line Replacement: It is highly recommended to replace the oil supply line. Carbon deposits (sludge) in the old line are the leading cause of 1.8T turbocharger failures.
- Prime Before Starting: Fill the oil inlet port with clean synthetic oil and rotate the compressor wheel by hand before the first engine start to ensure instant lubrication.
- Oil & Filter Change: Perform a full oil service using high-quality synthetic oil (VW 502.00/505.00 spec).
- Cooling System Check: As this is a water-cooled unit, ensure your coolant system is clean and the auxiliary water pump is functioning correctly.
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