The John Deere air filter RE596317 for 6090 engine 8R250 8R370 8R-2704 8R-3004 8R410 is a filter/regulator from John Deere. It sits in the supply line to a pneumatic or hydraulic system, keeping the fluid or air clean and properly regulated. It is commonly in pneumatic FRL (filter-regulator-lubricator) assemblies and compressed air systems.
