I just read what I wrote when I first responded and realized I wasn't very clear. I haven't seen anything smaller than a 189 in the N series. I have owned a C174(D) that I bought to resell but had it for probably 3 months and it was a very solid little tractor. Not a big deal, just wanted to clarify. Seemed like the the C174 was a pretty common model in the Hino line with a lot of crossover to other brands ( unfortunately, that still doesn't guarantee that parts are available though). If the N179 uses the same engine as the C174, I think you'll have a decent chance at getting the part.