Published October 31, 2026 · Updated November 5, 2026
Regular Production Option (RPO) codes for the C8 Chevrolet Corvette, 2020 through 2027. An RPO is General Motors’ three-character code for a factory option. This page keeps the codes people look up most often: engines, the dual-clutch transmission, axles, and the Z51, Z06, E-Ray, Grand Sport, Grand Sport X, Z07, and ZR1 packages. Earlier generations are on the C4, C5, C6, and C7 pages.
Descriptions follow GM order guides and fleet RPO lists from 2020 through 2027, including the 2020 Stingray order guide copied by Corvette Action Center, later guides compiled by RPO Archive, and the April 10, 2026 2027 Corvette order guide. A code is listed for the years those guides show. The 2027 model year is in production, so 2027 codes are included here.
Engines
LT2 – Engine, 6.2L V8, direct injection. Stingray, and also the E-Ray’s gasoline engine, 2020 to 2026. Not used on 2027 Stingray or Grand Sport cars.
LS6 – Engine, 6.7L V8, direct injection, high output. Stingray and Grand Sport for 2027, and the gasoline engine in the Grand Sport X. 535 hp and 520 lb-ft.
LT6 – Engine, 5.5L V8, direct injection. Z06, 2023 to 2027. 670 hp.
LT7 – Engine, 5.5L V8, twin turbo. ZR1, and the gasoline engine in the ZR1X, 2025 to 2027. 1,064 hp.
2027 models
1YC07 / 1YC67 – Stingray coupe and convertible. 1LT, 2LT, and 3LT. Z51 is still available. Rear-wheel drive.
1YE07 / 1YE67 – Grand Sport coupe and convertible, new for 2027. Widebody with the LS6, rear-wheel drive. 1LT, 2LT, and 3LT.
1YF07 / 1YF67 – Grand Sport X coupe and convertible, new for 2027. Widebody hybrid all-wheel drive: LS6 at the rear plus an electric front axle, 721 combined hp and a 1.9 kWh battery. This replaces the E-Ray. It is not an E-Ray with a new badge. 1LT, 2LT, and 3LT.
1YH07 / 1YH67 – Z06 coupe and convertible. 1LZ, 2LZ, and 3LZ.
1YR07 / 1YR67 – ZR1 coupe and convertible. 1LZ and 3LZ.
1YS07 / 1YS67 – ZR1X coupe and convertible. Hybrid all-wheel drive, 1,250 hp. 1LZ and 3LZ.
1YG07 / 1YG67 – E-Ray coupe and convertible, 2024 to 2026 only.
Transmissions
M1L – Transmission, 8-speed dual clutch. Stingray. The 2023 guide adds manual and auto modes. Still the standard Stingray transmission in the 2027 order guide.
M1N – Transmission, 8-speed dual clutch, includes manual and auto modes. New for 2027 on Grand Sport, and included with Z51 on Stingray.
M1M – Transmission, 8-speed dual clutch, includes manual and auto modes. Z06, 2023 to 2027.
M1K – Transmission, 8-speed dual clutch. ZR1, 2025 to 2027.
MLH – Transmission, 8-speed dual clutch, includes manual and auto modes. E-Ray, 2024 to 2026.
MLP – Transmission, ZR1X.
Related parts: automatic transmissions.
Axles
G96 – Differential, electronic limited-slip. Stingray, and included with Z51.
G0J – Differential, mechanical limited-slip. Standard Stingray in the 2027 order guide.
GM7 – Rear axle, performance ratio. Stingray and E-Ray, 2020 to 2026. The 2027 Z51 package uses G0K instead.
G0K – Rear axle, 5.56 ratio. Standard on 2027 Grand Sport, and included with 2027 Z51.
HP1 – Front axle, electrified propulsion. E-Ray, 2024 to 2026, and ZR1X. The 2027 order guide rates the ZR1X front axle at 186 hp. Grand Sport X uses that same style of front e-axle, not the earlier E-Ray unit.
XFD – Chassis drive line, all-wheel drive, electric front axle. ZR1X.
See differentials.
Packages
1LT, 2LT, and 3LT – Stingray, Grand Sport, and Grand Sport X equipment groups.
1LZ, 2LZ, and 3LZ – Z06 and E-Ray. ZR1 and ZR1X use 1LZ and 3LZ where the order guide lists them.
Z51 – Z51 Performance Package. Stingray. For 2027 it includes FE3 suspension, J55 brakes, G0K 5.56 axle, G96 electronic limited-slip, M1N dual-clutch transmission, T0A rear spoiler, QTU high-performance tires, and V08 heavy-duty cooling.
FE3 – Suspension, Z51 performance. Stingray.
FE4 – Suspension, Z51 performance with Magnetic Selective Ride Control. Stingray.
J55 – Brakes, Z51 performance. Stingray.
FEB – Z52 Sport Performance Package. Grand Sport, 2027. Includes J56 brakes and XFR high-performance tires.
FEY – Z52 Track Performance Package. Grand Sport, 2027. Includes J57 carbon-ceramic brakes, XFS Cup 2 R tires, WUB quad center-exit exhaust, and the T0F / CFZ carbon-fiber aero package.
FED – Sport Performance Package. Grand Sport X, 2027. High-performance tires and retuned Magnetic Selective Ride Control. This is the Grand Sport X package, not a renamed ZER.
NPP – Exhaust, performance. Standard on every 2027 model in the order guide.
NGA – Exhaust tips, black. Standard on every 2027 model.
WUB – Exhaust, quad center exit. Optional on 2027 Stingray and Grand Sport (order codes YC and YE). Included with FEY. Standard on Z06, ZR1, and ZR1X.
NWI – Exhaust tips, bright, center, quad, exposed. Requires WUB.
E60 – Front lift, adjustable height.
Z07 – Z07 Performance Package. Z06, 2023 to 2027.
ZER – ZER Performance Package. E-Ray, 2024 to 2026. Grand Sport X does not use ZER.
ZTK – ZTK Track Performance Package. ZR1 and ZR1X, 2025 to 2027.
Z25 – Grand Sport Launch Edition, 2027. The 3LT package in the April 10, 2026 order guide includes the EL9 Santorini Blue dipped interior, Torch Red seat belts, and a Launch Edition plaque.
CFZ – Ground effects, carbon fiber, Carbon Flash-painted. Z06 and E-Ray, and included with the 2027 Grand Sport FEY package.
CFL – Ground effects, extended front splitter. New for 2027. Not available with CFV or CFZ.
See disc brakes, spoilers and wings, and Corvette ZR1 packages.
Seats and interiors
AH2 – Seats, GT2 bucket.
HAG – Interior, asymmetrical Santorini Blue and Jet Black. New for 2027.
H8T – Interior, Santorini Blue.
Year-by-year lists
2020, 2021, 2022, 2023, 2024, 2025, 2026, 2027.
Sources
2020 Chevrolet Corvette order guide and 2020 RPO code list (Corvette Action Center). Later years: GM fleet order guides and RPO lists compiled by RPO Archive. 2027: the April 10, 2026 GM fleet order guide and the November 4, 2026 GM News lineup.