RE21394 Boom Cylinder Fits John Deere 690, 690A, 690B, 690C, 693B, 693C
RE21394 Boom Cylinder Fits John Deere 690, 690A, 690B, 690C, 693B, 693C
Couldn't load pickup availability
One New Aftermarket Replacement Boom Cylinder for John Deere (JD) 690 and 693 Series Excavators
This aftermarket replacement hydraulic boom cylinder replaces OEM part number RE21394 and is designed for the boom lift circuit on John Deere 690 and 693 series excavators. The boom cylinder drives the main lifting motion of the boom arm, providing the hydraulic force needed for digging, lifting, and trenching operations.
Important Serial Number Note (John Deere 690C): RE21394 applies to 690C units with serial number 509185 and up. Units with serial numbers up to 509184 use cylinder RE18949. Verify your serial number before ordering.
Compatible Models
John Deere Excavators: 690, 690A, 690B, 690C (S/N 509185 and up), 690CR
John Deere 693 Series Feller Bunchers: 693B, 693C
Replaces Part Number(s):
RE21394
Aftermarket Interchange Numbers
AT37003, RE18949 (predecessor cylinder used on 690C S/N up to 509184 and 690CR up to S/N 509184)
New aftermarket replacement part - not remanufactured, not used.
