shop E320 320L E320L Main Hydraulic Pump 114-0490 1140490 087-4717 Excavator Piston Pump

Applicable Models: E320: Early-generation Caterpillar excavator (pre-2000s) 320L / E320L: Mid-to-late 2000s models with L-series upgrades Assembly Part Name: Hydraulic Main Pump Typical OEM Part Numbers: E320: 339-0512 (axial piston pump) 320L / E320L: 397-3680 or 1038264 (axial piston pump/gear pump hybrid) Pump Type: Variable displacement axial piston pump (E320/320L) or gear-axial piston combination (E320L)