I'm not fully sure I understand which part you're asking about. Are you referring to the butt end of the machine or the plastic surrounding the plug? Both parts differ between my Silverado and my Diamond J. The Silverado in the photo appears to have Diamond J parts in both locations. Although the 'butt plate' is smooth like a Diamond J, it's color keyed to Silverado gray, which would indicate they made a rolling design change before the Diamond J came out. This stuff happens; just look at the number of minor design changes to the 1205 during its run. This would also lead me to doubt that it was a swapped part off of a Diamond J, as the 'butt plate on that model is a much darker graphite/charcoal gray, almost black. A dealer would simply slap what was compatible and close at hand onto the machine and send it out the door, as they did when I got the handle and cord assembly on my Genesis LXe replaced under a factory recall, which I have since come to regret. The replacement handle does not match the color scheme of the original, and its rocker switch has never worked correctly. To put the machine into straight suction mode, I have to first turn on the brush roll and then back the switch off one position. This was never an issue with the original handle's sliding switch.