This exhaust manifold is a supplementary part with mounting parts included. It is compatible with specific vehicle identification numbers (VINs) from certain production ranges. Engine numbers that are compatible include: 17495, 18696, 18154, 16388, 16415, 18750, 16386. It is suitable for vehicles with construction years ranging from 05/2004 to 12/2007 and 05/2003 to 05/2006. Compatible VW models include: Golf IV Schrägheck (1J1), Golf V Schrägheck (1K1), POLO (9N_), GOLF PLUS (5M1, 521), Caddy III Kombi (2KB, 2KJ, 2CB, 2CJ), Golf IV Variant (1J5), Caddy III Kastenwagen (2KA, 2KH, 2CA, 2CH), Bora Limousine (1J2), and Bora Variant (1J6). For AUDI, it fits the A2 (8Z0). SKODA models include: Octavia II Combi (1Z5), Fabia I Combi (6Y5), FABIA (6Y2), OCTAVIA (1Z3), and FABIA Stufenheck (6Y3). It is also compatible with SEAT Ibiza III Schrägheck (6L) and Cordoba Limousine (6L2). The part number is 03C253031E. This is an exhaust header, exhaust collector, manifold, and part of the exhaust system.