Engine service module
From Halopedia, the Halo wiki
Engine service modules are devices used to repair and maintain the engines of FSS-1000 Sabre starfighters. UNSC Sabre engineering facilities have many engine service modules to facilitate the repair of damaged Sabres.
Engine service modules are a Forgeable object on the level Anchor 9, as well as the "Thorage" items implemented onto Forge World and Tempest in the Halo: The Master Chief Collection port of Halo: Reach.
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