I forgot the brand ..  it's Needa

I'd think it fits better than the OEM one.. the head is bigger (17mm) but
it has thick base that fit inside the recess and the head is flushed with
the drain hole. Next oil change I'll swap the rubber gasket for a crush
washer...

http://www.autozone.com/external-engine/engine-oil-drain-plug/needa-parts-engine-oil-drain-plug/257264_959455_0?fromString=search&make=Honda&model=&year=

yes Autozone web page says it doesn't fit vanagon but it does

dan