Collection: Couplings

The Couplings collection covers parts used in excavators, loaders and air compressors. These components transmit torque, support travel or connect rotating and undercarriage assemblies. Similar-looking versions can differ in spline, tooth count, ratio, shaft dimensions, rotation, mounting and machine-side interface, so use the installed part and listing specifications rather than appearance alone.

Product records place these items beside hydraulic, engine and climate-control systems; record the fitted configuration before comparing alternatives. Photograph connectors and mounting points before removal.

• Use the removed part and equipment plate to establish the correct reference.
• Record ratio or rotation, spline or tooth count and installation side before comparing listings.
• Check shaft and housing dimensions, mounting interface and any included hardware.

Review the Couplings listing for included pieces and connection details, then use the equipment service instructions during installation.

Fitment FAQ: Can similar items be interchangeable? Not automatically; differences in spline or tooth count or shaft and housing dimensions can change fitment.

Verify unclear measurements before purchase; eligible returns remain subject to the published 90-day policy.