Replacement Part Numbers: DY-876; 1828565C1; YC3Z12B533AA; FSR1828565C1; 904-282 Function The glow plug control module uses a glow plug relay to switch current for the glow plugs on and off. The more glow plugs monitored by the control unit, the higher the current the circuit will need. To reduce the current required, glow plugs are often distributed across two circuits, with two glow plug relays. Fitment For Ford P-owerstroke Diesel 6.0L 7.3L 6.4L Glow Plug Control Module Note Please double check our pictures and Part Number and description to make sure it is what you need before ordering Use scenarios - Replacing a faulty glow plug control module on Ford P-owerstroke Diesel engines to restore reliable cold-start glow performance on 6.0L, 7.3L, or 6.4L models. - Installing in a diesel fleet vehicle to maintain efficient glow plug operation and take advantage of the dual-circuit design with two relays to reduce circuit current demand. - Rebuilding or servicing a Ford Power Stroke glow plug system to ensure compatibility with the listed part numbers during parts sourcing.