Hyundai 31MH-20320 Hydraulic Filter Element

The Hyundai 31MH-20320 is a hydraulic pilot line filter element designed for contamination control in pilot hydraulic circuits of construction machinery. It features a cartridge-style construction with cellulose and glass fiber composite media rated at approximately 10 microns nominal filtration. The element dimensions are 86 mm overall height, 43 mm outer diameter, and 22 mm inner diameter. It is engineered to withstand standard differential pressures of 0.35-0.4 MPa with high collapse resistance up to 32-42 MPa. The filter incorporates a bypass relief valve to prevent flow starvation during cold starts or high contamination loading. Operating temperature range extends to 135 degrees Celsius. This part serves as a direct OEM replacement for Hyundai Construction Equipment excavators and wheel loaders, and cross-references to equivalent filters from Mann, Donaldson, Fleetguard, Baldwin, Wix, and SF-Filter.