This Corteco differential oil seal is designed as a replacement for various transmission types including 3-speed automatic, 4-speed automatic, and manual transmissions. It fits front and rear axles and has an outer diameter of 60mm, an inner diameter of 45mm, and a thickness of 8mm. This part is compatible with a wide range of VW, Audi, Skoda, Seat, and Porsche models, including Golf IV, Transporter IV, Passat, Sharan, Bora, A3, A4, A6, A8, 80, 90, 100, Octavia, Superb, Exeo, Alhambra, Boxster, and Cayman. It is also a replacement for part numbers 016409399B, 018409399, 02D409399, 088409399, 088409399A, 088409399D, and 1N498085. Construction years range from 01/1988 to 07/1996, with specific engine codes including DT, DS, JV, PM, WB, WC, AAH, KV, WV, YN, ZB, AEB, ANB, APU, ARK, AWT, ACK, AMX, APR, AQD, ALG, ACV, AEU, AFN, HX, APT, AJK, AJM, ATJ, AUE, AMV, ASN, AZH, AKN, ASU, ATX, APZ, YT, BGB, BWE, BWT, and AUK.