T4 TECHNICAL
LIBRARY.
Engine codes, servicing, fluids, transmission, brakes, suspension, electrical information and model-specific reference data, built as a verified source for T4 owners.
START WITH THE JOB, NOT THE DATABASE.
Use the technical data through the tool that matches what you are trying to do.
T4 Technical Library
Verified reference data for Volkswagen T4 variants. Choose an engine or search by engine code, capacity or year. Always check the caveats and source notes before using critical specifications.
1.9 Diesel · ABL
1991–2004
- Engine
- 1.9 litre diesel
- Fuel
- Diesel
- Capacity
- 1.9 litre
- Cylinders
- 4
Important caveats
Model-year coverage and exact specification can vary by market and chassis. Additional performance and service data will be added only when separately verified.
Sources & verification
Guard plate – T4 model classification · Volkswagen Classic Parts · View source
2.4 Diesel · AAB
1991–1997
- Engine
- 2.4 litre diesel
- Fuel
- Diesel
- Capacity
- 2.4 litre
- Cylinders
- 5
Important caveats
AAB appears through the 1997 model-year classification reviewed. Vehicle and market-specific differences should be checked before using service specifications.
Sources & verification
Electromagnetic shut-off – T4 injection pump classification · Volkswagen Classic Parts · View source
2.4 Diesel · AJA
1997–2004
- Engine
- 2.4 litre diesel
- Fuel
- Diesel
- Capacity
- 2.4 litre
- Cylinders
- 5
Important caveats
AJA is shown alongside AAB in 1997 and as the 2.4 litre diesel in later T4 classifications. Exact vehicle specification must still be checked.
Sources & verification
Electromagnetic shut-off – T4 injection pump classification · Volkswagen Classic Parts · View source
2.5 Diesel · AJT
1998–2004
- Engine
- 2.5 litre diesel
- Fuel
- Diesel
- Capacity
- 2.5 litre
- Cylinders
- 5
- Aspiration
- Turbocharged
Important caveats
The reviewed Volkswagen classification confirms AJT as a 2.5 litre 5-cylinder diesel in T4 applications from 1998. Further output and service fields remain intentionally blank until separately verified.
Sources & verification
Pressure hose for VW T4 – model classification · Volkswagen Classic Parts · View source
2.5 TDI · ACV
1996–2004
- Engine
- 2.5 litre TDI
- Fuel
- Diesel
- Capacity
- 2.5 litre
- Cylinders
- 5
- Aspiration
- Turbocharged
Important caveats
ACV appears in multiple T4 configurations including Syncro. Exact output, gearbox pairing and service data should be confirmed for the specific vehicle before use.
Sources & verification
Caravelle goes Camper: A VW bus mechanic and his surf mobile · Volkswagen Classic Parts · View source
Pressure hose for VW T4 – model classification · Volkswagen Classic Parts · View source
One technical source. Connected across Just T4s.
This library is the technical data layer behind the Handbook, My T4, fitment checking and the Parts Library. Verified records can be reused across the site instead of being copied into separate pages and quietly drifting out of date.
Fitment Checker
Match parts against engine, production and equipment details instead of treating every T4 as the same vehicle.
Handbook Guides
Technical articles can pull controlled specifications into clear reference panels instead of duplicating data inside every article.
My T4
Combine confirmed vehicle data with owner-entered mileage and maintenance history to make the member area genuinely useful.
Technical note: Vehicle specifications can vary. Safety-critical procedures and settings should be checked against the exact vehicle, engine, transmission and current manufacturer/workshop information before work is carried out.