OEM 54308301 M630174 babban silinda birki shine 25.4mm (daidai da inch 1) diamita.Akwai masu haɗin kai guda biyu waɗanda ma'aunin zaren shine M12.Ya dace da motocin Mercedes Benz E-class (E320, E430) T-modell S210 E200 da sauransu.Babban silinda an yi shi da kayan aluminum. Abubuwan da aka gyara na roba ana yin su ta EPDM, wanda ke da ƙarfi sosai ga ruwan birki na tushen glycol.