Hundreds of Volkswagen T4 Parts and Accessories available here at BUS-ok. The Volkswagen T4 is the 4. generation of the VW Transporter and was introduced in 1990 when it replaced the VW T25. Markedly different from its forebears the T4 is front engined (watercooled) front wheel drive and all of its engines are water-cooled. 1996 saw a major facelift which included a ?long nose? version designed to accommodate the VR6 engine. ?Short nose? examples are known as the T4a and ?long nose? as the T4b. The T4 was available in Short Wheelbase (SWB) or Long Wheelbase (LWB) forms. Body styles included Pick-Up, Crew Cabs, Panel Van, Kombi Van, Caravelle, California Camper, Westfalia and the 4 wheel drive Syncro. BUS-ok supply mechanical and body parts for all of these models.