JCB JC40/910689 Seat Back Cushion

Aftermarket seat back cushion for JCB industrial equipment. Replaces OEM part number JC40/910689. Verified fitment for 5 machine models including 506-36, 507-42, 509-42, 510-56, 512-56. Confirm your machine model and serial number before ordering — seat rails and switch wiring can vary by production year. Request a quote for availability and freight to your location.