New turbo Audi Seat 2.0tdi 03L145701EV 03L145701EX 03L145702 03L145702V 03L145702X 03L145702E 03L145702EV 03L145702EX 03L145702J 03L145702JV 03L145702JX 03L145702N 03L145702NV 03L145702NX

New turbocharger replacment BV43A

Audi A4 (B8) 2.0 TDI 120kW/163PS CAHB CGLD

53039880189 53039700189 53039710189 53039880131 53039700131 53039710131 53039880138 53039700138 53039710138 BV43A-0131 BV43A-0138 BV43A-0189 5303-988-0189 5303-970-0189 5303-971-0189 5303-988-0131 5303-970-0131 5303-971-0131 5303-988-0138 5303-970-0138 5303-971-0138 03L145701A 03L145701AV 03L145701AX 03L145701C 03L145701CV 03L145701CX 03L145701E 03L145701EV 03L145701EX 03L145702 03L145702V 03L145702X 03L145702E 03L145702EV 03L145702EX 03L145702J 03L145702JV 03L145702JX 03L145702N 03L145702NV 03L145702NX

Turbocharger BV43A – Symptoms of Failure

Engine: 2.0 TDI
Power range: 120–130 kW (163–170 PS)
Turbo type: BV43A (Variable Geometry Turbo – VNT)

Common Symptoms of Turbocharger Failure

1. Loss of Engine Power

• Sluggish acceleration
• Weak or delayed boost
• Reduced torque under load

2. Excessive Exhaust Smoke

• Blue smoke – oil leaking through worn turbo seals
• Black smoke – insufficient air supply / boost leak
• White smoke – oil entering exhaust

3. Unusual Turbo Noises

• High-pitched whistling / siren sound
• Grinding or metallic noise (bearing / shaft wear)

4. Increased Oil Consumption

• Frequent top-ups
• Oil in intercooler / intake pipes

5. Boost Pressure Problems

• Underboost / overboost fault codes
• Check engine light
• Limp mode activation

6. Variable Geometry (VNT) Malfunction

• Sticking vanes due to carbon buildup
• Irregular turbo response
• Inconsistent boost pressure

7. Excessive Shaft Play

• Radial / axial movement
• Risk of turbine/compressor contact with housing

Common Causes

• Extended oil service intervals / poor oil quality
• Carbon buildup from EGR / DPF system
• Blocked oil feed or return lines
• High thermal load or aggressive driving
• Improper shutdown after heavy load

Recommendation

If your Audi A4, A5, A6, Q5, or Seat Exeo 2.0 TDI with BV43A turbo shows these symptoms, inspect the turbocharger and lubrication system immediately. Driving with a failing turbo can lead to severe engine damage or complete turbo failure.