Serviceable End Cap for GM 1227747 / 1227746 aluminum case

GM ECM — EPROM End Cap Serviceable End Cap with EBL Flash II Connector Cutout GM 1227747 / 1227746 aluminum case — EPROM end replacement Compatible Molex Connector 43640-0200 Description Replacement end cap for the EPROM end of the GM 1227747 / 1227746 aluminum ECM case. Designed for tuners running an EBL Flash II daughter board who need repeated access to the EPROM and PCB without destructive disassembly. Drop on, drop off — boards stay accessible. Features • Drop-in fit over the aluminum extrusion rails on the EPROM end • Full access to EPROM and PCB upon removal — no permanent modification required however; removal of entire end of the aluminum case which this covers; end may be advantageous • Integrated Molex 43640-0200 connector pass-through cutout • Purpose-built for EBL Flash II daughter board installations Compatibility GM ECM Part No. Application Status 1227747 TBI V6/V8 — '87–'91 trucks, vans, SUVs Confirmed 1227746 TBI V6/V8 — same case family Confirmed 1228747 TBI variant — dual black connector Unverified 1228062 TBI variant — dual black connector Unverified Connector Family Note This part is designed for the dual black connector (C3) ECM family. Red/blue connector ECMs (7730, 7749 family) use a different case and are not compatible. Notes If you verify fit on the 1228747 or 1228062, please leave a comment — compatibility reports from the community help keep this listing accurate. Also, make sure there is at least 22 to 25mm clearance between the back of the stock case and the vehicle to provide enough room for the end cap and connector.