It is the same cylinder that Kubota uses for the snowblower hitch raise and lower, the same as the Kubota snow plow. I believe that it is a 5" piston. It is quite expensive from Kubota, and you don't need such a large piston to move the chute hood. If you already have the snowblower, you already have the piston that they use, and you can measure yours. I would measure mine, but I am not at home presently. Kubota part # 70001-00871
Yes 7000100871 is the cylinder, it's a 2" x 5" unit and costs $700 CAD to replace, Ouch, I had a seal leaking on my snow blower B2714C quick hitch so got the seal kit $75 and had a shop install the seals for another $120.
It seems hydraulic anything is costly as hell, as I mentioned at the repair shop Kubota parts replacement cylinder price and the counter guy said 700 was a pretty good price!
Could practically hide the cylinder in a coat sleeve it's so small, and i'm still astounded at the cost. But likely to hear from better-versed hydraulics folks here about this, I've never had to repair or replace hydraulic rams before.
Hate to think what breaking a front end loader ram could cost.