● Spec: 4 Grooves, O.D.: 110mm, M.D. : 24mm, Suction Port: 17.8mm, Discharge Port: 11.9mm. ● IT FITS: 2015~2020 Cadillac Escalade with V8-6.2L Engine. ● IT FITS: 2014~2019 GMC Sierra & Chevrolet Silverado 1500 with V6-4.3L & V8-5.3L,6.2L Engine. 2014~2017 Chevrolet Silverado 2500 with V8-5.3L Engine. 2015~2020 GMC Yukon with V8-5.3L, 6.2L Engine. ● IT FITS: 2015~2020 Chevrolet Suburban, Tahoe with V8-5.3L Engine. 2017~2020 Chevrolet Suburban with V8-6.0L, 6.2L Engine. 2018~2020 Chevrolet Tahoe with V8-6.2L Engine. ● IT FITS: 2014~2018 Chevrolet Cheyenne with V8-5.3L, 6.2L Engine. ● A PREMIUM QUALITY: New Improved THINKHAO's VDC-Variable Displacement Compressor. ● IT FITS: GM Model with V6-4.3L Engine: 2014~2019 GMC Sierra & Chevrolet Silverado 1500, ● IT FITS: GM Model with V8-5.3L Engine: 2014~2019 GMC Sierra & Chevrolet Silverado 1500, 2014~2017 Chevrolet Silverado 2500, 2014~2018 Chevrolet Cheyenne, 2015~2020 Chevrolet Suburban Tahoe & GM Yukon. ● IT FITS: GM Model with V8-6.0L/ 6.2L Engine: 2015~2020 Cadillac Escalade, 2014~2018 Chevrolet Cheyenne, 2015~2020 GMC Yukon, 2017~2020 Chevrolet Suburban, 2018~2020 Chevrolet Tahoe. ● Direct Replacement: This NEW CM-3179M auto AC compressor is designed to replace the original compressor directly. ● 100% TESTED: All Compressors Passed 100% Functional tests and Leakage checks. ● Refer: 68149886AB, 68149886AC, 141098, 198396, CO29232, 6513187.