HEIDELBERG GRM24 POWER MODULE OEM. PART NUMBER : 91.144.2121. For more info see pictures. CONDITION: USED in Good working order. For CPtronic system Heidelberg Web offset M600 – sheetfeed Speedmaster GTO etc. WEBPRO-D&B offers a variety of parts including Goss/Harris/Heidelberg Web presses. We also have the capability of reverse engineering any parts that are not easily obtained from the OEM manufacturers. Please check our other auctions.