Fitment： For Chevrolet Chevy IMPALA 2014 2015 2016 2017 2018 2019 2020 For IMPALA 14 VIN 1 (4th digit, New Style), 3.6L, California emissions, opt NU5 For IMPALA 14 VIN 1 (4th digit, New Style), 3.6L, Federal emissions (opt NT7) For IMPALA 15-16 VIN 1 (4th digit, New Style), 3.6L, VIN 3 (8th digit, opt LFX), California emissions, opt NU5 For IMPALA 15-16 VIN 1 (4th digit, New Style), 3.6L, VIN 3 (8th digit, opt LFX), Federal emissions (opt NT7) For IMPALA 17-19 3.6L, California emissions, opt NU5 For IMPALA 17-19 3.6L, Federal emissions (opt NT7) For IMPALA 20 (3.6L), California emissions, opt NU5 For IMPALA 20 (3.6L), Federal emissions (opt NT7) For XTS 13 (3.6L) .
