Published October 31, 2026
Regular Production Option (RPO) codes for the C7 Chevrolet Corvette, 2014 to 2019. An RPO is General Motors’ three-character code for a factory option. This page keeps the codes people look up most often: engines, transmissions, the electronic limited-slip differential, and the Z51, Grand Sport, Z06, Z07, and ZR1 packages. Earlier generations are on the C4, C5, and C6 pages. The next car is on the C8 RPO codes page.
Descriptions follow GM fleet order guides (2014, 2015, 2016, 2017, and 2018 copies cited by RPO Archive, including Corvette Action Center reproductions). LT5 is included only as the 2019 ZR1 engine from those order-guide copies.
Engines
LT1 – Engine, 6.2L (376 ci) V8, direct injection. Stingray and Grand Sport, 2014 to 2019. Rated 455 hp, or 460 hp with NPP performance exhaust.
LT4 – Engine, 6.2L (376 ci) supercharged V8, direct injection. Z06, 2015 to 2019. 650 hp.
LT5 – Engine, 6.2L (376 ci) supercharged V8, direct and port injection. ZR1, 2019.
Transmissions
MEP – Transmission, 7-speed manual with Active Rev Matching. Stingray without Z51, 2014 to 2019.
MEL – Transmission, 7-speed manual with Active Rev Matching, Z51 performance ratios. Stingray with Z51, and Grand Sport, 2014 to 2019.
MEK – Transmission, 7-speed manual with Active Rev Matching. Z06 and ZR1 manual, 2015 to 2019.
MYC – Transmission, 6-speed paddle-shift automatic. 2014.
M5U – Transmission, 8-speed paddle-shift automatic. 2015 to 2019.
Related parts: automatic transmissions and manual transmissions.
Axle
G96 – Differential, electronic limited-slip (eLSD). Stingray with Z51, Grand Sport, Z06, and ZR1, 2014 to 2019.
See differentials.
Packages and suspension
1LT – Equipment group 1LT. Stingray and Grand Sport base trim.
2LT – Equipment group 2LT. Stingray and Grand Sport.
3LT – Equipment group 3LT. Stingray and Grand Sport.
Z51 – Z51 Performance Package. Stingray. Includes performance brakes, dry sump, eLSD, cooling, suspension, and aero. Order codes 1YX07 (coupe) and 1YX67 (convertible).
Z15 – Grand Sport Heritage Package. Grand Sport, 2017 to 2019. Requires fender hash marks.
Z07 – Z07 Performance Package. Grand Sport and Z06, 2015 to 2019. Carbon ceramic brakes, Z07 suspension, Cup 2 tires, and aero.
FE3 – Suspension, Z51 performance. Standard with Z51.
FE4 – Magnetic Selective Ride Control with Z51. Optional on a Z51 Stingray.
FE2 – Magnetic Selective Ride Control without Z51. Stingray without Z51, 2016 to 2019.
J55 – Brakes, performance 4-wheel antilock disc. Standard with Z51.
NPP – Exhaust, dual-mode performance. Optional on a Stingray without Z51. Standard with Z51 from 2015, and on Grand Sport, Z06, and ZR1.
See disc brakes and Corvette ZR1 packages.
Year-by-year lists
2014, 2015, 2016, 2017, 2018, 2019.
Sources
GM fleet order guides for the 2014 to 2018 Corvette, including Corvette Action Center copies, as compiled by RPO Archive. The 2014 Stingray order guide is also posted by the C7 Registry.