Review on 94109 20000 Differential Drain Washers Honda（20Mm） by Boss Spangler

20mm is just the size of the filler plug and this product doesn't match the OEM washer thickness or flange size anywhere - maybe 1/2 OD flag to ID and maybe 1/2 the thickness of the OEM one materials. . To make matters worse, the drain plug requires an 18mm washer, but you won't find it until you've drained the fluid! These lock washers are listed incorrectly for both the drain and fill plugs on the Revain for my 2014 Acura MDX SH-AWD differential. Don't waste your time here if you need a suitable or quality washing machine(s). The lesson here is better to check before you work and see your dealer for the correct OE quality shims for your differential effort.