Your best bet would be to get in touch with a local diesel fuel injection repair shop that has a Bosch dealership and give them that info. Go onto the Bosch web site and look world wide there for an authorized dealer.
Kubota # 12581-43012
If you are looking to purchase a Kubota engine online but you want to learn about each engine to make sure you purchase the right model, there is a Kubota parts dealer website.
0.18mm to 0.22mm intake and exhaust are the same
6qts. with filter
2.4 gallons
4cyl kubota diesel
10,000
NAPA 1344
15 w 40
90 weight gear lube
in the uk its recommended to use 15w40
fuel injection