The ECH-D4 is a core part that first appeared in Armored Core 2 and later in Armored Core 2: Another Age.

Part DescriptionEdit

High defense but very few slots.

Part StatisticsEdit

  • Part Type: Core
  • Price: 105000
  • Manufacturer: Emeraude
  • Weight: 1516
  • Energy Drain: 884
  • Armor Points: 3008
  • Def Shell: 664
  • Def Energy: 603
  • Defensive Points: 1267
  • Maximum Weight: 3842
  • VS-MG-Response: 38
  • VS-MG-Angle: 50
  • Optional Slots: 8
  • Over Boost: 119/141
  • OB Power: 2000
  • OB Energy Drain: 18000
  • Discharge Heat: 1420
  • OB Limit: 3000/1500
  • Cooling: 398


This part can be bought in the shop. In Armored Core 2 it is added to to the shop after an Email from Nell. In Armored Core 2: Another Age it is in the shop from the beginning of the game.

Notable UsersEdit


  • This part got a stat increase in Armored Core 2: Another Age. Its OB Limit was decreased from 3000 to 1500 and its overall Over Boost performance was raised from 119 to 141. This was probably due to the introduction of the Discharge Heat stat only appearing in Another Age.
  • This is the heaviest core part and the one with the lowest Energy Drain, highest Def Shell, highest Def Energy, highest Defensive Points, highest Maximum Weight, lowest Over Boost and the lowest number of Optional Slots in both games it appears in. It also has the lowest OB Power and OB Energy Drain in both games. Also in terms of OB Energy Drain it is tied with the ECM-XROO.
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