Product review (5 stars): 1. The replacements have been improved from the original parts. 2. Part number clarification...
IMPROVED DESIGN: I ordered a replacement for one of the two covers Dec 2014. Contrary to what some other reviews suggest, the hinge arm that easily breaks on the original part has been improved on the new part with thicker, reformulated plastic that has held up, and likely will hold up for the remaining life of the appliance (My LG refrigerator is model LFD25860SW). The manufacturer has changed the white plastic material from PS (polystyrene) to ABS (acrylic butyl styrene (acrylonitrile-butadiene-styrene)), a tougher/less-brittle material... Look for ">ABS<" on the white plastic part to confirm that this is the improved version. If it has ">PS<, then it is an older version and the vendor should be contacted to remedy that. I am now ordering a replacement for the second old original cover which just broke (Knowing now what I've learned after receiving the first new part, I would recommend replacing both covers any time one needs replacing).
PART NUMBERS: Note that the part number most-evident on the cover assembly is 3806JJ2044, which is the part number for the main white plastic part *only* and won't likely be found in a part search because it isn't sold seperately: 3551JJ2019D is for the *assembly*, which includes 3806JJ2044, plus 3550JJ205303. A2-1 (the clear plastic window), plus 4940JA2026 (the adjustable blue/gray vent). So ordering the assembly (3551JJ2019D) will get you what you're really looking for.
The original design of many of the plastic parts in this area had proven to be woefully inadequate. But kudos to LG for improving this part and also, to my knowledge, the 3550JJ0009A Refrigerator Shelf Frame, which has molded-in crisper drawer guides which broke on the original (Be sure to reuse the metal reinforcement bar from the original part if you buy a new shelf frame).