7H0145980Q Intake Hose Air Pipe Line OEM VW T5 7H 7J 1.9 Tdi

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Genuine used Volkswagen Transporter T5 1.9 TDI turbo intercooler charge-air pressure hose / boost pipe, genuine OE part number 7H0145980Q. This hose forms part of the turbocharged engine’s pressurised intake system and carries compressed air through the charge-air circuit towards the engine intake.

Part Number: 7H0145980Q

VW OE Number: 7H0 145 980 Q

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

Position: Charge-Air / Intercooler to Intake System

Engine: 1.9 TDI

Fuel Type: Diesel

Manufacturer: Volkswagen / VAG

Condition: Genuine used part

Compatibility

Suitable for selected Volkswagen Transporter T5 1.9 TDI applications, including:

* Volkswagen Transporter T5 Panel Van

* Volkswagen Transporter T5 Kombi

* Volkswagen Transporter T5 Shuttle

* Volkswagen Caravelle T5

* Volkswagen Multivan T5

* Volkswagen California T5

* Transporter T5 Platform / Chassis Cab

Strongly documented engine applications include:

* BRR – 1.9 TDI, 62 kW / 84 PS

* BRS – 1.9 TDI, 75 kW / 102 PS

Primarily found on later pre-facelift T5 1.9 TDI vehicles, approximately 2006–2009, depending on engine code and vehicle specification.

Some aftermarket catalogues also cross-reference 7H0145980Q to AXB and AXC applications. However, other VW specialist catalogues identify 7H0145980G for AXB/AXC and 7H0145980Q for BRR/BRS.

For this reason, AXB/AXC compatibility should only be assumed if 7H0145980Q matches the original hose fitted to the vehicle.

Technical Information

This component is part of the turbocharger charge-air system.

When the engine is operating under load, the turbocharger compresses the incoming air. This compressed air travels through the charge-air pipework and intercooler before reaching the engine intake.

The intercooler reduces the temperature of the compressed air, increasing its density before it enters the engine.

The 7H0145980Q hose operates on the pressurised side of this system, so maintaining an airtight connection is important for correct turbocharger performance.

Important – This Is a Boost Hose

Although this component is sometimes advertised as an:

* Air intake hose

* Intake pipe

* Air pipe

* Turbo intake hose

it is more accurately described as a:

Turbo / Intercooler Charge-Air Pressure Hose

It should not be confused with the large unpressurised fresh-air duct running from the air-filter housing towards the turbocharger.

Charge-Air System Information

The T5 1.9 TDI charge-air system includes components such as:

* Turbocharger

* Intercooler

* Charge-air hoses

* Connecting pipes

* Intake/throttle flap assembly

* Intake manifold

* MAP / boost-pressure sensor

* Associated clips and seals

All connections need to remain sufficiently airtight for the engine-management system to maintain the requested boost pressure.

Common Symptoms / Reasons for Replacement

A split, leaking or damaged charge-air hose may cause:

* Loss of engine power

* Poor acceleration

* Reduced turbo boost

* Limp-home mode

* Hissing or rushing-air noise

* Whistling under acceleration

* Excessive black exhaust smoke

* Engine-management warning light

* Underboost fault codes

* Oil mist around the leaking connection

* Hose collapsing or deforming

* Split rubber

* Damaged retaining connection

* Hose repeatedly disconnecting

A small split can sometimes only open when the engine is producing boost, making the fault difficult to identify while the vehicle is stationary.

Oil Inside the Boost Hose

A light coating of oil inside a used turbo/intercooler hose can be normal on a diesel engine.

Oil vapour from the crankcase ventilation system can enter the intake tract and leave an oily film inside the charge-air pipework.

However, a significant quantity of oil should be investigated.

Possible causes can include:

* Turbocharger problems

* Excessive crankcase pressure

* Breather-system problems

* Oil accumulation in the intercooler

Oil around the outside of a boost-hose joint can also help identify a leaking connection.

Important Diagnostic Information

Before replacing the hose, inspect the complete boost system for:

* Splits in other hoses

* Loose connections

* Damaged retaining clips

* Worn seals/O-rings

* Cracked plastic charge pipes

* Intercooler damage

* Turbocharger outlet leaks

* Intake connection leaks

* MAP/boost sensor faults

If the vehicle has an underboost fault, replacing this hose should only be considered after confirming that the hose or its connection is actually leaking.

Boost Leak Diagnosis

A boost leak can often produce:

* Hissing under acceleration

* Poor performance under load

* Black smoke

* Limp mode

* Underboost diagnostic codes

Visual inspection may not reveal every leak because some splits only expand when the charge-air system becomes pressurised.

A suitable charge-air pressure/smoke test can help locate difficult leaks.

Installation

Before installation:

* Compare the replacement hose with the original

* Inspect both hose ends

* Check retaining clips

* Inspect seals/O-rings

* Clean mating connections

* Check connecting pipes for damage

During installation:

* Position the hose without twisting it

* Ensure each connection is fully seated

* Install retaining clips correctly

* Confirm the hose cannot contact sharp or moving components

After installation, check the system for boost leakage during operation.

Programming / Coding

No programming or coding is required.

This is a mechanical charge-air system component.

If an engine-management fault was caused by a boost leak, stored diagnostic trouble codes may need to be cleared after the repair.

Important Compatibility Note

Please compare before ordering:

* OE number – 7H0145980Q

* Engine code

* Hose shape and length

* Diameter at both ends

* Connector design

* Retaining clips

* Mounting/support points

* Original hose markings

* Vehicle production date

Do not purchase solely because your vehicle is a T5 1.9 TDI.

Different charge-air hoses were used depending on engine code and production specification.

In particular, 7H0145980Q is strongly documented for BRR/BRS engines, while AXB/AXC vehicles may use a different revision such as 7H0145980G.

Matching 7H0145980Q directly against the original hose is the safest compatibility check.

Condition

Genuine Volkswagen used turbo/intercooler hose.

Normal signs of previous use may include:

* Oil residue internally

* Surface marks

* Dirt

* Light staining

* General engine-bay wear

* Marks from retaining clips

Please inspect the listing photographs carefully, particularly the hose body, flexible sections, connector ends and retaining points.

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

Ideal genuine replacement for a split, leaking or damaged Volkswagen Transporter T5 1.9 TDI turbo/intercooler charge-air hose, provided 7H0145980Q matches the original component.