Volkswagen Transporter T5 Air intake hose with part number 7H0145955

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Genuine used Volkswagen Transporter T5 turbo intercooler charge-air pipe / boost hose assembly, part number family 7H0145955. This component forms part of the turbocharged engine’s pressurised intake system and carries compressed charge air between components of the intercooler and engine intake system.

Part Number: 7H0145955

VW OE Number Family: 7H0 145 955

Part Type: Charge Air Pipe / Intercooler Pipe / Turbo Boost Hose / Intake Pressure Pipe

Position: Engine Bay – Turbocharger / Intercooler Charge-Air System

Fuel Type: Diesel

Manufacturer: Volkswagen / VAG

Condition: Genuine used part

Compatibility

The 7H0145955 part-number family is used on selected:

* Volkswagen Transporter T5 – 2003–2009

* Volkswagen Caravelle T5

* Volkswagen Multivan T5

* Volkswagen California T5

* Transporter Panel Van

* Transporter Kombi

* Shuttle / passenger versions

* Chassis cab / platform versions where applicable

Depending on the exact suffix and pipe configuration, applications include selected:

1.9 TDI

* 62–63 kW / 84–85 PS versions

* 75–77 kW / 102–105 PS versions

2.5 TDI

* Selected 96 kW / 130 PS versions

* Selected 128 kW / 174 PS versions

Different versions of the 7H0145955 pipe were fitted depending on engine code and production specification.

Known OE Number Revisions

The 7H0 145 955 family can be found with several suffixes, including:

* 7H0145955D

* 7H0145955E

* 7H0145955H

* 7H0145955J

* 7H0145955L

These numbers should not automatically be treated as universally interchangeable without checking the engine application and complete assembly.

If your physical part has a suffix letter, include that complete number in the listing.

Technical Information

This pipe forms part of the engine’s charge-air system.

The turbocharger compresses incoming air before it enters the engine. Compressing the air increases its temperature, so the air is routed through the intercooler to reduce its temperature before entering the intake manifold.

The charge-air pipework provides the sealed route between these components.

Correct operation of this system is important for:

* Turbo boost pressure

* Engine performance

* Airflow control

* Correct fuel/air management

* Emissions control

* Turbocharger efficiency

Important – Charge Air Pipe, Not Just Fresh-Air Intake

Although this component is sometimes advertised as an:

* Air intake hose

* Air intake pipe

* Turbo air pipe

* Intake line

the 7H0145955 family is associated with the pressurised turbo/intercooler charge-air system.

For eBay search visibility, useful descriptions include:

Intercooler Pipe

Charge Air Pipe

Turbo Boost Pipe

Turbo Intercooler Hose

Air Intake Pressure Pipe

This distinguishes it from the unpressurised air-filter-to-turbo intake duct.

Sensor Information

Certain versions of the 7H0145955 assembly are associated with a pressure/MAP sensor fitted into the charge-air pipe.

Depending on the version, related sensor references can include:

* 038906051B

* 038906051C

* Bosch 0281002399

* Bosch 0281002401

Sensor inclusion depends entirely on the exact item being sold.

If the sensor is fitted to your pipe and shown in the listing photographs, buyers should compare its number as well as the pipe number.

If no sensor is included, the listing should not imply that one is supplied.

Common Symptoms / Reasons for Replacement

A damaged or leaking charge-air pipe can cause:

* Loss of engine power

* Poor acceleration

* Reduced turbo boost

* Limp-home mode

* Hissing under acceleration

* Whooshing/rushing-air noise

* Excessive black exhaust smoke

* Engine-management warning light

* Underboost fault codes

* Oil mist around pipe connections

* Split hose sections

* Cracked plastic pipework

* Damaged retaining connections

* Pipe repeatedly becoming disconnected

A small crack may only open when the turbocharger produces significant boost pressure.

Oil Inside the Pipe

A light oily film inside used T5 turbo/intercooler pipework can be normal.

Oil vapour from the crankcase ventilation system can travel through the intake system and leave residue inside:

* Turbo hoses

* Charge pipes

* Intercooler

* Intake pipework

However, excessive oil accumulation should be investigated because it may indicate another engine or turbocharger-related problem.

Oil visible around the outside of a connection can also indicate a boost leak.

Important Diagnostic Information

If the vehicle has low boost or poor performance, inspect the complete charge-air system before replacing individual components.

Check:

* Turbocharger outlet

* Charge-air hoses

* Intercooler

* Pipe connections

* Retaining clips

* Sealing O-rings

* MAP/boost-pressure sensor

* Intake manifold connections

* Vacuum control system

* Turbocharger actuator/control system

A suitable pressure or smoke test can help identify boost leaks that are difficult to locate visually.

Common Boost-Leak Faults

A leaking connection may allow pressurised air to escape without the pipe being visibly cracked.

Inspect carefully for:

* Flattened O-rings

* Damaged seals

* Worn locking grooves

* Broken retaining clips

* Cracks around sensor mounting points

* Cracks around pipe joints

* Oil staining around connections

Correct seals and clips are important when installing the replacement pipe.

Installation

Before installation:

* Compare the replacement with the original

* Inspect all pipe connections

* Check seals/O-rings

* Check retaining clips

* Inspect the sensor mounting area where applicable

* Clean mating surfaces

During installation:

* Do not force the pipe into position

* Ensure connections are fully seated

* Install retaining clips correctly

* Avoid twisting flexible hose sections

* Ensure the pipe does not contact hot, sharp or moving components

After installation, check for boost leakage and confirm normal engine performance.

Programming / Coding

No programming or coding is required for the charge-air pipe itself.

If the assembly includes the correct matching boost/MAP pressure sensor, replacement of the pipe normally does not require coding.

Stored engine-management fault codes caused by a previous boost leak may need to be cleared after the repair.

Important Compatibility Note

Please compare before ordering:

* Base OE number – 7H0145955

* Complete suffix letter

* Engine code

* Engine capacity

* Pipe shape

* Pipe diameter

* Connector design

* Sensor position

* Sensor part number where included

* Retaining clips

* Mounting points

* Vehicle production date

Do not purchase solely because your vehicle is a VW Transporter T5 diesel.

The 7H0145955 family was produced in several revisions, and the correct configuration varies according to engine and production specification.

Matching the complete OE number and physical design against the original pipe is strongly recommended.

Condition

Genuine Volkswagen used engine charge-air component.

Normal signs of previous use may include:

* Internal oil residue

* Surface marks

* Scratches

* Dirt

* Engine-bay staining

* Light oxidation to metal components

* Marks around retaining connections

Please inspect all listing photographs carefully for the exact pipe configuration, connectors, mounting points, sensor and any components included with the sale.

Any identifying colour/security markings applied to the part must remain intact in the event of a return.

Ideal genuine replacement for a cracked, leaking or damaged Volkswagen Transporter T5 turbo/intercooler charge-air pipe, provided the 7H0145955-series OE number and configuration match the original component.