Relief Valve AE43612 Fits John Deere 545 546 547 550 550M 556 557 558 559 565New Aftermarket Replacement Relief Valve Fits John Deere Round Baler Models: 330, 335, 375, 385, 430, 435, 440E, 446, 447, 448, 449, 450E, 450M, 456, 456S, 457, 457S, 458, 458S, 458STD, 459, 459E, 466, 467, 467S, 468, 468S, 530, 535, 540, 545, 546, 547, 550, 550M, 556, 557, 558, 559, 565, 566, 567, 568, 570, 572, 575, 578, 580, 582, 590, 592, 842, 852, 854, 862, 864 Technical Information: Head Diameter 1" Length 3. 34" Thread Size 7 8" 14 UNF Replaces