Replaced a discontinued CAT triplex mounted to Honda GX270. Bolts right up. Came with new bolts and a flat rectangular shaft key I didn’t use (reused existing). Pump comes filled with oil so you don’t have to buy any right away. If you do buy oil the table in the manual makes it seem like a good synthetic diesel oil (e.g. Rotella T6) would work for all climates in the USA. Garden hose inlet and quick disconnect for pressure washer hose already mounted. Quick disconnect is mounted with female quick coupler on the pump. Pump installation is literally 5 minutes or less. The pump does produce a bit more than 3000 psi at full throttle, but not 4000 psi as claimed. You decide if that’s a problem. I should say that the manual says that this pump requires more horsepower than my 9 HP Honda (I think it says 11-15 HP for this model). Not sure if that’s why it doesn’t generate rated pressure. The pressure adjustment seems to work well to dial in desired pressure between 1000-3000 psi. When the trigger is not depressed, the pump “surges” up and down (between about 1000 psi and 3000 psi) which is new to me (after 40 years of owning pressure washers). It sounds kinda weird but nothing broke. Not sure if this a problem, a defect, or a feature. I’m speculating it does this on purpose to prolong pump life, but that’s a guess - there doesn’t seem to be any thermo protection so that’s my speculation. When you hold the trigger, pressure is constant at just over 3000 psi. I ran it for 30 minutes washing my driveway and it wasn’t too hot to touch (the old CAT would have been on fire). My initial impression after shopping for pumps for months is that this one might be a good value for the money - it was definitely the least expensive pump in its category. Can’t yet comment on its life cycle but it does come with a full set of new O-rings which was a surprise. It seems like Amazon was watching me put it in my cart, not it buy it for months, remove it, and repeat because when I went back to
Ethan 
