998809 1GQ000‑1012011 Spin‑on Engine Oil Filter Replacement for Yuchai 4‑Cylinder Diesel Engine 998809 (1GQ000‑1012011) is an ISO/TS16949‑approved spin‑on oil filter for Yuchai four‑cylinder engines. It clears metal fragments and carbon sludge under heavy‑load running to cut engine wear. OEM‑compliant dimensions allow hassle‑free fitting. Stable under high‑heat and high‑pressure environments, it fits medium‑duty trucks, farm harvesters and construction machinery for fleets, farmers, repair stores and international suppliers.