1.All the models for bmw 2.Materials: intake:SUH1&SUH3, exhaust valve:SUH3&SUH35 3.ISO9001 Intake valve and exhaust valve1.We TOPU is a proffessional manfacturer engined in engine parts, intake valve and exhaust valve is the main parts for Toyota,Niaasn, Mitsubishi, Honda, Suzuki, Daihatsu, Isuzu, Mazda, Buick, Peugeot, Daewoo, Kia, Renault, Citroen,Volkswagen,Mercedes-Benz, BMW, Audi, Volvo, ...