Case Final Drive Splind Coupler 87586665

87586665 Final Drive Coupler It transfers torque between splined shafts in the axle or final drive assembly, helping maintain alignment, smooth power delivery and reliable operation under heavy load. Worn couplings cause spline slippage, vibration, misalignment and increased wear in the drive system. Replacing it restores proper torque transfer, extends drivetrain life and reduces unexpected downtime. This is an aftermarket replacement part. All OEM part numbers, model references and brand names are used for identification and compatibility only and do not indicate any affiliation with or endorsement by the original manufacturer.