How to diagnose and replace a turbocharger and intercooler on Audi A4?

The turbocharger is an extremely delicate part that will be either crippled by insufficient lubrication or by foreign substance getting into it via the air intake duct and the symptoms of failure include poor engine performance, blue/ gray exhaust smoke, or abnormal sounds. In diagnosing suspected failure of turbocharge, looseness or damage in intake air duct, no limits to air intake system, damaged vacuum hose and wiring, no binding of actuator linkage in wastegate, and damage or restriction in exhaust system, supply of lubricating oil, drainback lines and coolant supply lines. When such checks fail to reveal the issue, a service department in a dealership or a repair facility equipped with the necessary equipment should be engaged in order to diagnose the problem. To replace the turbocharger of 1.8L models, take out the engine cover, fresh air inlet duct and air filter housing and drain engine oil and coolant. Unscrew the oil feed and coolant feed lines, lift the vehicle and get rid of the air conditioning compressor without removing the refrigerant hoses. Unscrew the air inlet and outlet ducts, unscrew the turbocharger support bracket, and unscrew the oil return line off the oil pan and be sure to spill any remaining oil. On 2.0L models, the same steps are used with the addition of the exhaust manifold heat shield and PCV fresh air inlet hose being removed, as well as multiple line banjo bolts. Installation of the new turbocharger assembly requires the replacement of all gaskets, seals, nuts, tighten all fasteners to the working torque, refuel the engine and coolant, and make sure that the engine is properly lubricated and then start the engine. To change intercooler, it is important to lift the vehicle, lay under-covers, take out radiator support depending on the model, either place the radiator support in the service position or take off the front bumper cover and headlight housing. Disassemble the air intake scoop, inlet and outlet air tube, and any structural blocking electrical connector then unmount the intercooler and the mounting bracket prior to taking off the intercooler then reassemble all damaged parts during the new mounting.

Genuine Audi A4 Turbocharger

Turbo

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12 Turbochargers found

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Audi A4 Turbocharger Part Number: 06N-145-701-D
$1201.67 MSRP: $1442.59
You Save: $240.92 (17%)
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Product Specifications
- Other Name: Turbo; Turbocharger
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2020 Audi A4 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L GAS
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Audi A4 Turbocharger Part Number: 06N-145-702-D
$1203.28 MSRP: $1444.52
You Save: $241.24 (17%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Turbo; Turbocharger
- Replaces: 06N-198-725-A, 06N-198-805
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2020 Audi A4 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L GAS
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Audi A4 Turbocharger Part Number: 06A-145-704-LX
$1090.25 MSRP: $1300.00
You Save: $209.75 (17%)
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Product Specifications
- Other Name: Turbo
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 1997-1999 Audi A4 | Base | 4 Cyl 1.8 L GAS
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Audi A4 Turbocharger Part Number: 078-145-702-SX
$1339.38 MSRP: $1602.86
You Save: $263.48 (17%)
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Product Specifications
- Other Name: Turbo
- Position: Right
- Replaces: 078-145-702-S
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2000-2001 Audi A4 | Base | 6 Cyl 2.8 L GAS
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Audi A4 Turbocharger Part Number: 078-145-701-SX
$1375.08 MSRP: $1645.71
You Save: $270.63 (17%)
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Product Specifications
- Other Name: Turbo
- Position: Left
- Replaces: 078-145-701-S
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2000-2001 Audi A4 | Base | 6 Cyl 2.8 L GAS
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Audi A4 Exhaust Manifold Part Number: 06D-145-701-J
$1602.14 MSRP: $1923.35
You Save: $321.21 (17%)
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Product Specifications
- Other Name: Exmanturbo; Exhaust Manifold
- Replaces: 06D-145-701-G, 06D-145-701-E, 06D-145-701-H
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2005-2009 Audi A4 | Base, Cabriolet | 4 Cyl 1.8 L GAS, 4 Cyl 2.0 L GAS
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Audi A4 Exhaust Manifold Part Number: 06H-145-703-S
$1725.50 MSRP: $2071.42
You Save: $345.92 (17%)
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Product Specifications
- Other Name: Turbo; Exhaust Manifold, Turbocharger
- Replaces: 06H-145-702-R, 06H-145-703-R, 06H-145-703-N
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2013-2016 Audi A4 | Base, Premium, Premium Plus, Prestige | 4 Cyl 2.0 L GAS
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Audi A4 Turbocharger Part Number: 06L-145-654-G
$2108.79 MSRP: $2531.57
You Save: $422.78 (17%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Turbo; Turbocharger
- Replaces: 06L-145-654-F, 06L-145-654-C
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2017-2020 Audi A4 | Premium, Premium Plus, Prestige, Titanium | 4 Cyl 2.0 L GAS
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Audi A4 Turbocharger Part Number: 06H-145-702-S
$1130.50 MSRP: $1357.14
You Save: $226.64 (17%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Turbo
- Replaces: 06H-145-702-Q, 06H-145-702-L, 06H-145-702-G
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2009-2012 Audi A4 | Base | 4 Cyl 2.0 L GAS
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Audi A4 Turbocharger Part Number: 06L-145-874-E
$2111.05 MSRP: $2534.27
You Save: $423.22 (17%)
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Product Specifications
- Other Name: Turbo; Turbocharger
- Replaces: 06L-145-722-T, 06L-145-722-M, 06L-145-722-D
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2017-2020 Audi A4 | Premium, Premium Plus, Prestige, Titanium | 4 Cyl 2.0 L GAS
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Audi A4 Turbocharger Part Number: 058-145-703-N
$2241.76 MSRP: $2691.19
You Save: $449.43 (17%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Turbo
- Replaces: 058-145-703-J
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2000-2006 Audi A4 | Base, Cabriolet | 4 Cyl 1.8 L GAS, 4 Cyl 2.0 L GAS
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Audi A4 Turbocharger Part Number: 06D-145-701-JX
$1977.84 MSRP: $2364.28
You Save: $386.44 (17%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Exmanturbo
- Replaces: 06D-145-701-GX, 06D-145-701-FX, 06D-145-701-HX
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2007-2009 Audi A4 | Cabriolet | 4 Cyl 2.0 L GAS

Audi A4 Turbocharger

The Audi A4 Turbocharger is able to increase power and fuel economy by converting exhaust energy into compressed, oxygenated air for the engine. Exhaust gases rotate a turbine attached to a compressor wheel, and therefore all the blasts exit the cylinders, contributing to the process of forcing fresh air back in, known as boost. Since the Turbocharger uses exhaust flow rather than crankshaft belts, it consumes less mechanical power than a supercharger, although a slight delay, or lag, may be noticed as the pressure is developed. Audi has employed a number of Turbocharger designs in the history of the sedan to reduce that delay. Initial versions applied a single turbo, but later Audi models applied twin-scroll hardware, which divides the exhaust pulses into two streams, allowing the turbine to spin faster and smooth out the torque. Some of the diesel trims are fitted with variable-geometry vanes, which change the blade angle during movement, maintaining constant boost over a wider rev range. The new push is the electrically assisted turbos, which use a small motor that pre-spins the shaft, almost eliminating lag and reducing emissions. These arrangements are all united by a common goal, which is to convert wasted heat into thrust in order to enable smaller engines to challenge the power of bigger, heavier units with less fuel consumption. In a bid to secure the system, Audi has incorporated powerful cooling, and newer models of the A4 have channeled charge air through a redesigned intercooler to maintain lower temperatures and preserve the Turbocharger, allowing Audi to keep the driving personality enjoyable and efficient.

Choose original equipment manufacturer Turbocharger for great performance and strong durability. They use Audi's official craftsmanship and high-grade materials, and meet strict quality standards. Are you looking for quality Turbocharger at a good price? Come to our online store. We carry a wide range of genuine parts for your Audi A4 and the prices are competitive. Each part comes with the manufacturer's warranty. You can install with confidence and get steady results. Over time, you'll save money and avoid hassle. Keep your maintenance simple and protect your vehicle with OEM parts. Get the quality your A4 needs now.

Audi A4 Turbocharger Parts and Q&A

Turbocharger
058-145-703-N
Q: How to diagnose and replace a turbocharger and intercooler on Audi A4?
A:
The turbocharger is an extremely delicate part that will be either crippled by insufficient lubrication or by foreign substance getting into it via the air intake duct and the symptoms of failure include poor engine performance, blue/ gray exhaust smoke, or abnormal sounds. In diagnosing suspected failure of turbocharge, looseness or damage in intake air duct, no limits to air intake system, damaged vacuum hose and wiring, no binding of actuator linkage in wastegate, and damage or restriction in exhaust system, supply of lubricating oil, drainback lines and coolant supply lines. When such checks fail to reveal the issue, a service department in a dealership or a repair facility equipped with the necessary equipment should be engaged in order to diagnose the problem. To replace the turbocharger of 1.8L models, take out the engine cover, fresh air inlet duct and air filter housing and drain engine oil and coolant. Unscrew the oil feed and coolant feed lines, lift the vehicle and get rid of the air conditioning compressor without removing the refrigerant hoses. Unscrew the air inlet and outlet ducts, unscrew the turbocharger support bracket, and unscrew the oil return line off the oil pan and be sure to spill any remaining oil. On 2.0L models, the same steps are used with the addition of the exhaust manifold heat shield and PCV fresh air inlet hose being removed, as well as multiple line banjo bolts. Installation of the new turbocharger assembly requires the replacement of all gaskets, seals, nuts, tighten all fasteners to the working torque, refuel the engine and coolant, and make sure that the engine is properly lubricated and then start the engine. To change intercooler, it is important to lift the vehicle, lay under-covers, take out radiator support depending on the model, either place the radiator support in the service position or take off the front bumper cover and headlight housing. Disassemble the air intake scoop, inlet and outlet air tube, and any structural blocking electrical connector then unmount the intercooler and the mounting bracket prior to taking off the intercooler then reassemble all damaged parts during the new mounting.