The Vanagon Dictionary

Vehicle Identification Number. This is a number that uniquely identifies your vehicle. It is usually located in several locations on the vehicle, the most common being under the windscreen just forward of the driver (and intended to be viewed from the outside of the bus.) You'll also find the VIN on the frame rail under the van near the front edge of the sliding door. Also see: Table for interpretting the Vanagon VIN

In Gerry’s preserved terminology FAQ, “generation” groups Transporters by body series: T1 (1949–1967), T2 (1968–1979), T3 (1980–1991; called Vanagon in North America), and T4 (1992 onward in that FAQ). In Gerry’s September 2008 “lowered and chopped Vanagon” exchange, contributors identify the same T3 generation as Vanagon in North America and T25 in the UK; replies disagree over whether “T25” is proper usage. The name therefore depends on regional convention and is not a precise model-year identifier. These are historical ranges and naming conventions; verify market and model year.

• generation
• model

An engine that circulates liquid coolant through passages and a radiator to carry heat away. Gerry’s Vanagon spark-plug reference lists DH water-cooled engines with Digijet for 1983–1985 and MV engines with Digifant for 1986–1991. Verify engine code, market, and model year; this archived table is an identification aid, not a complete application chart.

• engine
• water-cooled

Adventurewagen was a Fort Bragg, California conversion builder, not a Volkswagen model or Transporter generation. In a December 1998 Gerry thread about camper conversions, a contributor describes its high-roof conversion as common on the U.S. West Coast and distinguishes that fixed high roof from pop-top layouts. A 2001 thread also identifies Adventurewagen as a maker of Vanagon high-top conversions. Roof, interior, and equipment vary by build and vehicle year.

• camper
• conversion

An accessory package originally available on the Vanagon that bridged the gap between the passenger van and the camping-oriented Westfalia model. With the included rear bench that folded into a double-bed, fold-out table, and privacy curtains, an owner could easily move seven people during the week and provide sleeping space for two on the weekends. This idea and name have just been reintroduced as a model of the revamped Eurovan called the MV Weekender .

Dehler was a German conversion company whose VW Transporter campers and business-van layouts appear in Gerry’s preserved terminology FAQ. Archive discussions make the model distinction clearer: a 1999 thread concerns a Dehler Profi conversion sighting, while a 2005 thread describes a rare Dehler Profi high-roof camper. “Dehler” therefore identifies the converter; Profi is a particular conversion line, not a separate Transporter generation. Confirm the exact build and year for parts or fitment.

• camper
• conversion

In a Syncro drivetrain, a driveshaft decoupler disconnects the prop shaft so the front axle is no longer driven through it; it is not the front differential lock. A Gerry discussion on 16 May 2004 compares the original non-viscous-coupling layout, which used a driveshaft decoupler, with viscous-coupling Syncros while debating front-lock behavior. The thread is historical community discussion, not a retrofit procedure; identify the drivetrain configuration before interpreting parts or controls.

• vw
• syncro
• drivetrain

Community name for Volkswagen’s water-cooled, horizontally opposed four-cylinder engine family used in Vanagons. Gerry’s technical index covers 1.9 L and 2.1 L versions and year-specific service topics. A January 2004 archive thread describes an owner’s 1983 1.9 L Waterboxer running roughly when cold but normally after warming up; it records the symptom and discussion, not a universal cause or fix. Identify the engine code and model year before using parts or service information.

• engine
• water-cooled

The electronic control unit (ECU) is part of Volkswagen’s Digifant fuel-injection and engine-management system. Gerry’s 1986–1991 technical bulletin index distinguishes these applications from the earlier Digijet years. In a January 1999 list thread, an owner of a 1986 Westfalia reported that the engine quit after cooling-system bleeding and asked whether fuel starvation or a failed Digifant component was involved; the thread records a troubleshooting question, not a confirmed diagnosis. Check engine code and market before identifying an ECU.

• vanagon
• ecu