This is the heat exchanger valve that fits into the John Deere exhaust manifold of John Deere two cylinder tractors. This valve is designed to divert half of the engine exhaust gas through the intake manifold heat exchanger when installed with the words "HOT" displayed. When installed in the "COLD" position the heat exchanger valve will not allow any exhaust gas to flow through the heat exchanger portion of the intake manifold.
For John Deere 50, 520, 530 Tractors.
Replaces John Deere Part B3213R