Air Filter (HDA5813, HDA5517) WA803

The Wesfil Air Filter - WA803 is an aftermarket engine air filter designed for select older Ford and Mazda vehicles (cross-referencing industry codes HDA5813 and HDA5517). Key Details & Compatibility • Vehicle Applications: Fits models such as the Mazda E-Series (e.g., E2000 FE RWD Petrol Van, 01/84–12/90) and Ford Courier (e.g., PC 4cyl R2 2.2L, 1985–1996). • Cross-Reference Numbers: HDA5813, HDA5517, A1245 (varies by brand interchange). • Function: Captures dust, soot, and road debris to maintain a proper air-fuel mixture, protecting cylinder walls, pistons, and airflow meters from premature wear