#102
Genuine used Volkswagen Transporter T5 1.9 TDI Air Intake Pipe / Air Filter Intake Duct, part number 7H0129578, removed from a 2009 vehicle.
This pipe forms part of the engine air-intake system, directing incoming air through the air-filter system while maintaining the correct factory intake routing.
Part Details
Part Number: 7H0129578
VW Number Format: 7H0 129 578
Part Type: Air Intake Pipe / Air Intake Duct / Air Filter Intake Pipe
Position: Engine Bay
System: Engine Air Intake System
Donor Vehicle: Volkswagen Transporter T5 2009
Donor Engine: 1.9 TDI
Manufacturer: Volkswagen / Genuine VW
Condition: Used Genuine Part
Compatibility
Suitable for selected:
* Volkswagen Transporter T5 – 2003–2009
* Volkswagen Caravelle T5
* Transporter Panel Van
* Transporter Kombi
* Transporter Shuttle
* Selected camper/conversion models based on the T5 platform
Confirmed applications of 7H0129578 include the 1.9 TDI 105 PS / 77 kW AXB engine.
Other T5 engine configurations can use visually similar intake pipes, so buyers should match the original part before ordering.
Technical Information
The air intake pipe is part of the engine’s fresh-air supply system.
Its purpose is to channel outside air through the correct intake route towards the air-filter housing.
The air-filter system then removes dust, dirt and other airborne contaminants before the cleaned air continues through the engine’s intake system.
Correct intake ducting helps provide:
* Unrestricted airflow
* Correct factory intake routing
* Protection against engine-bay contaminants
* Secure connection to the air-filter housing
* Reduced unwanted induction noise
* Correct operation of the complete air-intake system
Air Intake System Information
This component operates as part of a system that can include:
* Fresh-air intake duct
* Air-filter housing
* Air-filter element
* MAF / Mass Air Flow sensor
* Intake hoses
* Turbocharger intake system
* Hose clamps and retaining clips
* Associated mounting brackets
On the 1.9 TDI, maintaining an intact intake system is particularly important because damaged or incorrectly connected intake components can affect airflow through the air-filter and turbocharger intake system.
Common Reasons for Replacement
Replacement may be required because of:
* Cracked intake pipe
* Split or damaged plastic
* Broken mounting points
* Damaged connecting ends
* Missing original intake duct
* Accident damage
* Previous engine-bay repairs
* Heat-related deterioration
* Loose or poorly fitting connections
* Excessive vibration or rattling
Possible Symptoms of a Damaged Intake Pipe
Depending on where the damage is located, symptoms can include:
* Increased induction noise
* Rattling from the engine bay
* Loose intake ducting
* Poor connection to the airbox
* Dirt entering the intake system
* Visible cracks or splits
* Incorrectly positioned air intake
* Airflow-related problems if other intake components are also damaged
Important Diagnostic Information
If the original intake pipe is damaged, also inspect:
* Air-filter housing
* Air-filter element
* MAF sensor
* Turbo intake pipework
* Connecting hoses
* Mounting brackets
* Rubber mounts
* Retaining clips
* Hose connections
Any dirt or foreign material found beyond the air filter should be investigated before the vehicle is returned to service.
Installation
This is a mechanical intake component and is normally a straightforward replacement when the correct version is fitted.
Ensure:
* All mounting points are secure
* Intake connections are correctly seated
* Retaining clips are properly engaged
* No gaps are present around connections
* The pipe does not contact moving or excessively hot components
Programming / Coding
No programming or coding required.
Part Number / Revision Information
Part Number: 7H0129578
Number Format: 7H0 129 578
A commonly catalogued related/revised number is:
7H0129578B / 7H0 129 578 B
The 7H0129578B version is listed for a much wider range of Transporter T5 engines, including 1.9 TDI, 2.5 TDI and later 2.0 TDI applications.
However, related suffix versions should not automatically be assumed interchangeable without comparing the actual components.
Important Compatibility Note
Volkswagen used different intake arrangements depending on engine code, production date and vehicle specification.
Before ordering, please compare:
Part Number: 7H0129578
Engine: 1.9 TDI
Pipe shape and dimensions
Connection diameters
Mounting points
Airbox connection
Original component design
For the most reliable compatibility check, compare the part directly with the original component fitted to your vehicle.
Condition
Used genuine Volkswagen part.
As a used engine-bay component, the item may show normal marks, scratches, dust, staining and other signs of previous installation and storage.
Please inspect the supplied photographs carefully for the exact condition, connections and mounting points.
An ideal genuine replacement for a cracked, broken, damaged or missing Volkswagen Transporter T5 1.9 TDI air intake pipe / air-filter intake duct.
Brand: Volkswagen
Manufacturer Part Number: VW
Placement on Vehicle: Left
Country of Origin: Germany