The Meritor SPL170 U-joint, part number CP170X-4X or CP170X4X, is a heavy-duty driveline universal joint from Meritor’s SPL170 series. The SPL series is Meritor’s standard driveline line, and the 170 designation identifies the series size within that family. This joint is sold by Pro Gear and Transmission as a genuine Meritor part. If you need help confirming this is the correct U-joint for your driveshaft assembly, give us a call before ordering.Non returnable itemFeaturesMeritor SPL170 series driveline U-jointPart number CP170X-4X or CP170X4XSPL series designation identifies Meritor standard driveline product line170 series size classification within the SPL driveline familyGenuine Meritor part sold by Pro Gear and Transmission