VICKERS PSV10-10-S-0-2/0.5

Harvesters are one of the listed applications for this valve, so you're in the right ballpark. It's a spool-style design built to handle up to 350 bar (5000 psi) and flows up to 300 L/min (80 USgpm), so it's got the muscle for demanding mobile equipment. The valve is also built with compactness in mind, which tends to matter when you're working inside tight machine compartments. That said, confirming the fit comes down to matching the port configuration and mounting pattern on your specific harvester model against the PSV10-10 series specs.

This Vickers valve is rated for a maximum pressure of 350 bar, which works out to about 5000 psi.