PLUG - HEX HEAD (Hyundai HN40K-04)

A damaged hex head plug can cause fluid leaks or pressure loss in a sealed system. During routine service, a worn plug may strip threads or fail to seal properly. This aftermarket replacement part references Hyundai as the OE maker and cross-references part number HN40K-04. The plug type provides a threaded closure for ports or openings, relying on a hexagonal head for wrench engagement. A common failure consequence is gradual seepage that leads to low fluid levels and component wear. Keeping a hex head plug in sound condition helps maintain system integrity and prevent contamination. Verify the serial number or application, then call (562) 693-7748.

Part number variants: HN40K-04, hn40k-04, HN40K04, hn40k04