Product review (3 stars): Replacement OEM part made by Whirlpool, but not as sturdy as the original.
As indicated in several other reviews, this replacement part is less sturdy than the original part.  It looks fine, and I expect with care, it will remain new looking for several years.  It is an exact match for my stove.  However, there is a (very) slight warp in the cartridge due to flimsy construction, so the part doesn't sit perfectly on top of the stove.  The burner quality appears to be the same as in the original part.