For Perodua Alza Air Filter Hose Bush Grommet D46T (1 Pair / 2 pcs) 9004A-48050, this is a small but important mounting component used to secure and support the air filter hose connection. It helps ensure proper alignment and stability between the air intake hose and the air filter housing. These grommets act as vibration dampers, reducing engine vibration transfer to the air intake system. They also help maintain a tight and stable connection so there is no air leakage between joints, ensuring the engine receives clean and properly filtered air. A good seal at this point is important for maintaining engine performance, fuel efficiency and smooth airflow. Specification includes part number 9004A-48050, compatible with Perodua Alza models using D46T air intake mounting design. It comes as a pair (2 pieces), suitable for replacement of both left and right mounting points. Using worn or damaged grommets can lead to loose intake hose fitting, air leakage, vibration noise and reduced air intake efficiency. Replacing them helps restore proper air intake stability and ensures the air filter system remains securely mounted. Return and warranty are subject to proper installation and normal usage conditions. Any damage caused by incorrect installation or improper fitment will not be covered. Always check grommets during air filter or intake system service to maintain stable engine operation. For workshop service, we recommend replacing these grommets whenever wear or hardening is detected to ensure secure air intake mounting and smooth engine performance for your Perodua Alza.