This is an in-line fuel filter from Hengst, model H103WK. It is also known by part numbers 5008879, AK078W, 0014776301, 0014776401, 0014776601, 0014777901, A0014776301, A0014776401, A0014776601, and A0014777901. It functions as a pre-filter. The filter has an outer diameter of 36mm and an overall length of 102mm. It is suitable for vehicles up to engine number 126000 and construction year 05/1990. This filter is compatible with various MERCEDES-BENZ models including Stufenheck (W124), C-Klasse Limousine (W202), Stufenheck (W123), W124 T-modell (S124), G-Klasse SUV (W463), E-Klasse Limousine (W124), E-Klasse T-modell (S124), C-Klasse T-modell (S202), G-Klasse SUV (W460), W123 Coupe (C123), G-Klasse SUV (W461), T2/L Kasten/Kombi, T1 Bus (601), W123 T-modell (S123), T2/LN1 Kasten/Kombi, T1 Kasten (602), 100 Bus (631), T1 Pritsche/Fahrgestell (602), 100 Kasten (631), T1 Pritsche/Fahrgestell (601), T1 Kastenwagen (601, 611), T2/L Pritsche/Fahrgestell, T2/LN1 Pritsche/Fahrgestell, T1/TN Pritsche/Fahrgestell, 100 Pritsche/Fahrgestell (631), T1/TN Kasten/Kombi, G-Klasse SUV Cabrio (W463), T2/LN1 Kipper, MB100 Kasten (KPA), O309 Bus, O 309, and UNIMOG. It is also compatible with SSANGYONG models such as MUSSO (FJ), KORANDO (KJ), MUSSO SPORTS, and KORANDO Cabrio (KJ). Additionally, it fits DAEWOO Musso SUV, KORANDO (KJ), and KORANDO Cabrio (KJ) models. For PUCH, it is compatible with G-Modell (W460), G-Modell (W461), and G-Modell (W463).