I think that's correct- right side rear sliding window run channel.EPC also shows a MB478210 "Runchannel, Qtr Window, RH) for my van which I assume is the far rear RH (Driver's Side) sliding window run channel.
For edification &/or clarification in a Random Parts list you posted last year you listed these numbers: Rear window weather strips (leaf windows): MB859144, MB683061, MB416393
There's some confusion here. L300s came with two different style of windows: sliding windows, and leaf windows. They use different seals.
Sliding windows:
Sliding windows are usually fitted to the left and right front (sliding door and the window behind the driver), and often to the right rear window. The left rear window is usually fixed glass to prevent amputations.
Run channel (felted weatherstrip) part numbers for short wheelbase vans with sliding windows:
Right Front (driver's side): MB416314
Left front (sliding door): MB416313
Right rear (if fitted): MB478210
Left rear (if fitted, LHD Mitsubishi Van/Wagon for instance): MB478209
Leaf windows:
Just a single pane of glass, hinged at the front, with a latch at the rear to let the back edge pop out a couple of inches. These windows use a rubber seal similar to the tailgate seal. Leaf windows are normally fitted to the drivers side front and rear, and the left side rear. The window in the sliding door is normally fixed.
Weather strip part numbers for RHD short wheelbase vans with leaf windows:
Right front (driver's side): MB683060
Right rear: MB859144
Left rear: MB683061
Long wheelbase vans have different part numbers for the rearmost windows, since they're longer. LWB vans also sometimes have sliding windows on the sliding door side.
Window seals are still available from the usual suspects: Amayama.com, Partsouq, etc.
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