Sleeve Coupler for Penta DP SX Drives – Replaces 854553 and 3852268 This sleeve coupler is a direct replacement component for Penta DP SX Drives.It is designed to fit and function as the parts numbered 854553 and 3852268.The coupler connects the engine output shaft to the drive unit input shaft, transferring torque through interlocking splines.It accommodates minor misalignment while maintaining rotational alignment under normal operating conditions. The coupler is compatible with Penta DP SX Drives and fits models including PV60-1, PV60-4, and S1 Coupler systems.It is engineered to match the dimensions, spline count, and mounting configuration of the replaced parts.No modifications to the engine or drive are required for installation. Signs of wear may include excessive vibration during , audible noise or grinding from the drivetrain area, difficulty engaging gears, or visible damage to the spline surfaces.Replacement is recommended when such conditions are observed. Installation requires standard hand tools.Prior to installation, clean the splines on both the engine shaft and drive shaft to remove or corrosion.A light application of marine-grade lubricant may assist in assembly.Use a torque wrench to tighten fasteners to the specification provided in the applicable Penta service manual.After installation, verify proper alignment between the engine and drive unit. Regular visual inspection is advised to monitor for signs of wear, cracking, or spline deformation.Replacement intervals depend on usage, environmental exposure, and maintenance practices. This sleeve coupler is compatible with Penta DP SX Drives and replaces part numbers 854553 and 3852268. Compatibility Statement: This is a third-party replacement.Brand/model references serve only as compatibility indicators.