Package included: 1 piece Differential Fitment: CADILLAC CTS 14 Rear, Sdn, VIN A (4th digit, New Style), AWD CADILLAC CTS 15 Rear, Sdn, AWD CADILLAC CTS 16 Rear, AWD CADILLAC CTS 17-19 rear, AWD 2.0 LITER & 3.6 LITER, w/o AWD, 8-speed trans. CTS; RWD; w/o Limited Slip; 8-Speed Trans. Reference OEM Number: 84110752, 23156302, 22784683 Ratio: 2.85 Note: We have every model, you can ask me how many Ratio you need by email,By the way attach the vin of your vehicle Condition:Remanufacturing Warranty: Three-year warranty Quantity: 1 Features: Original factory specifications,Stable properties, high reliability； Guaranteed Exact Fit for easy installation；Engineered for superior durability.