OTTO Bus 3Kc1 Diesel Engine Parts Brake Intake And Exhaust Valves 8941169316 894116-9316 8-94116931-6 For Isuzu OTTO Bus parts: Brake Intake & Exhaust Valves for Isuzu 3KC1 diesel engine. Part Nos. 8941169316 series. Durable, OEM-compatible, guarantees smooth airflow and brake operation.