Features: 1. Application: For 2013 2014 Cadillac ATS; 2014 Cadillac CTS; 2013 2014 Chevrolet Malibu; 2014 Chevrolet Impala & Buick Regal 2.0L, 2.5L engines. 2. Direct Replacement: Direct Replacement for OTC 6746, Similar to EN-50656. 3. Function: Use this Timing Chain Retainer to clamped around the timing chain pins on both the intake and exhaust sides of the cylinder heads. It bolted to the cylinder head to maintain the chain tension, but still allow access to the actuator bolts, to allow the cams to be serviced. 4. Benefits: Securely Install the EN-50656 holding tool to prevent the camshaft chain from dropping into the front engine cover during camshaft actuator replacement. .