Chevrolet · 1971-1980
Vega / Monza
vega · vega gt · cosworth vega · kammback · panel express · monza · monza 2+2 · monza towne coupe
45 option rows 33 RPO codes 10 model years
62% Factory-verified
- ✓ Factory-verified · 28
- ● Confirmed · 13
- ◑ Single-source · 4
- ⚠ Disputed · 0
Applicable options
Documented RPO codes
Model year
| Code | Option | Years | Notes & factory source | Confidence |
|---|---|---|---|---|
| L13 | 140ci 2300 OHC I4, 1-bbl (base) | 1971–1977 | 90 hp gross (1971–72); "Dura-Built 140" from 1976 GM Heritage factory kit — 1974 Chevrolet Vega, p.31. GM Heritage factory kit — 1976 Chevrolet Monza, p.6. | Factory-verified |
| L11 | 140ci 2300 OHC I4, 2-bbl (performance) | 1971–1977 | 110 hp gross / 84–87 hp net; standard in GT; ~75% take rate in 1971 GM Heritage factory kit — 1971 Chevrolet Vega, p.4. GM Heritage factory kit — 1977 Chevrolet Monza, p.4. | Factory-verified |
| Z09 | Cosworth Vega twin-cam 122ci (2.0L) I4, EFI | 1975–1976 | 110 hp; 2,061 built 1975 (all black/gold), 1,447 in 1976; numbered dash plaques GM Heritage factory kit — 1975 Chevrolet Vega, p.4. | Factory-verified |
| — | GT package (hatchback & Kammback) | 1971½–1977 | includes L11 engine, F41 suspension, special tires/wheels, gauges, trim; introduced mid-1971 at $325 | Confirmed |
| F41 | Handling/sport suspension | 1971–1977 | part of GT; raised lateral grip to ~0.93 g GM Heritage factory kit — 1971 Chevrolet Vega, p.21. GM Heritage factory kit — 1977 Chevrolet Vega, p.10. | Factory-verified |
| ZJ1 | Custom interior (perforated vinyl trim) | 1975–1977 | standard on Cosworth; cloth inserts optional GM Heritage factory kit — 1975 Chevrolet Vega, p.66. GM Heritage factory kit — 1977 Chevrolet Vega, p.8. | Factory-verified |
| Z51 | "Spirit of America" package | 1974 | white/red/blue limited edition hatchback; also offered on Nova and Impala | Confirmed |
| — | Millionth Vega limited edition | 1973 | orange/white GT replica of the millionth car; ~6,500 built | Confirmed |
| — | Estate wagon (woodgrain) / LX notchback (vinyl roof) | 1973–1977 | trim models introduced mid-1973 | Confirmed |
| — | Cabriolet notchback / Nomad wagon | 1976–1977 | half-vinyl roof w/ opera windows; restyled-window Nomad | Confirmed |
| MB1 | Torque-Drive (manual-shift 2-speed) | 1971–1972 | budget semi-automatic GM Heritage factory kit — 1971 Chevrolet Vega, p.10. | Factory-verified |
| M35 | Powerglide 2-speed automatic | 1971–1973 | GM Heritage factory kit — 1971 Chevrolet Vega, p.10. GM Heritage factory kit — 1972 Chevrolet Vega, p.11. | Factory-verified |
| M38 | Turbo Hydra-Matic 350 3-speed automatic | 1973–1977 | GM Heritage factory kit — 1977 Chevrolet Vega, p.8. | Factory-verified |
| M20 | 4-speed manual (Opel-built to 1972, Saginaw from 1973) | 1971–1977 | GM Heritage factory kit — 1971 Chevrolet Vega, p.10. GM Heritage factory kit — 1977 Chevrolet Monza, p.10. | Factory-verified |
| MM5 / M75 | 5-speed manual w/ overdrive (Borg-Warner) | 1975–1977 | offered on Cosworth/GT-era cars; RPO lettering not confirmed in sources consulted — treat code as unverified | Single-source |
| A20 | Swing-out rear quarter windows | 1971–1977 | GM Heritage factory kit — 1972 Chevrolet Vega, p.12. GM Heritage factory kit — 1977 Chevrolet Vega, p.9. | Factory-verified |
| C50/C49 | Heated rear window / defogger | 1971–1977 | electrically heated backlight optional from launch | Confirmed |
| D88 | GT stripe (black paint under back window) | 1977 | GM Heritage factory kit — 1977 Chevrolet Vega, p.10. | Factory-verified |
| N40 | Power steering | 1973–1977 | — | Confirmed |
| J50 | Power brakes | 1975–1977 | new option 1975 GM Heritage factory kit — 1976 Chevrolet Monza, p.32. | Factory-verified |
| N33 | Tilt steering wheel | 1975–1977 | new option 1975 GM Heritage factory kit — 1975 Chevrolet Monza, p.9. GM Heritage factory kit — 1977 Chevrolet Monza, p.12. | Factory-verified |
| U14 | Instrument gauge package | 1971–1977 | tach + auxiliary gauges (GT standard) GM Heritage factory kit — 1972 Chevrolet Vega, p.12. GM Heritage factory kit — 1977 Chevrolet Vega, p.9. | Factory-verified |
| — | BR70-13 / BR78-13 steel-belted radial tires | 1973–1977 | Q-series tire ordering codes by year | Confirmed |
| L13 / L11 | 140ci I4, 1-bbl (base) / 2-bbl | 1975–1977 | dropped after 1977 with the Vega engine line GM Heritage factory kit — 1975 Chevrolet Vega, p.121. GM Heritage factory kit — 1976 Chevrolet Monza, p.6. | Factory-verified |
| — | 151ci 2.5L "Iron Duke" I4 (base) | 1978–1980 | 2-bbl, 85–90 hp; Pontiac-built (RPO not confirmed in sources consulted) | Single-source |
| — | 196ci 3.2L Buick V6 | 1978–1979 | 90 hp; not sold in CA/high altitude | Confirmed |
| LD5 | 231ci 3.8L Buick V6 | 1978–1980 | CA/high-altitude V6 through 1979; only engine option in 1980 GM Heritage factory kit — 1978 Chevrolet Monza, p.40. GM Heritage factory kit — 1980 Chevrolet Monza, p.21. | Factory-verified |
| LV1 | 262ci 4.3L 2-bbl V8 | 1975–1976 | smallest Chevrolet V8; 110 hp GM Heritage factory kit — 1975 Chevrolet Monza, p.4. GM Heritage factory kit — 1976 Chevrolet Monza, p.16. | Factory-verified |
| — | 350ci 5.7L 2-bbl V8, 125 hp | 1975 | California/high-altitude substitute for the 262 (1975 only) | Confirmed |
| LG3 | 305ci 5.0L 2-bbl V8 | 1976–1979 | 1976: CA/high-altitude only; 49-state option 1977–79; dropped after 1979 GM Heritage factory kit — 1977 Chevrolet Monza, p.4. GM Heritage factory kit — 1979 Chevrolet Monza, p.9. | Factory-verified |
| Z01 | Spyder equipment (performance) package | 1977–1979 | $274 in 1977; F41-type suspension, console, sport wheel, gauges, Spyder identification; equipment package concept introduced 1976 GM Heritage factory kit — 1977 Chevrolet Monza, p.13. GM Heritage factory kit — 1979 Chevrolet Monza, p.35. | Factory-verified |
| Z02 | Spyder appearance package | 1977–1979 | $199 in 1977; blackout trim, air dam, rear spoiler, decals, black styled wheels GM Heritage factory kit — 1977 Chevrolet Monza, p.2. GM Heritage factory kit — 1979 Chevrolet Monza, p.3. | Factory-verified |
| Z29 | Spyder equipment package (combined) | 1980 | merger of Z01+Z02 with new decals/air dam GM Heritage factory kit — 1980 Chevrolet Monza, p.2. | Factory-verified |
| — | Monza Mirage body package | 1977 | white w/ red-blue stripes, flares, spoilers; ~4,097 converted by Michigan Auto Techniques under GM contract — dealer/contractor package, not an RPO | Confirmed |
| — | Sport front end (2+2 nose on Towne Coupe) | 1976–1978 | quad rectangular headlamps package | Confirmed |
| — | Estate wagon woodgrain package | 1978 | on Monza (ex-Vega) wagon | Confirmed |
| M20 | 4-speed Saginaw manual (base) | 1975–1980 | GM Heritage factory kit — 1975 Chevrolet Monza, p.8. GM Heritage factory kit — 1977 Chevrolet Monza, p.10. | Factory-verified |
| — | 5-speed Borg-Warner T-50 manual OD | 1975–1979 | RPO lettering not confirmed in sources consulted | Single-source |
| M29 | Turbo Hydra-Matic 200 3-speed automatic | 1976–1980 | GM Heritage factory kit — 1980 Chevrolet Monza, p.21. | Factory-verified |
| M38 | Turbo Hydra-Matic 350 3-speed automatic | 1975–1977 | with V8s GM Heritage factory kit — 1977 Chevrolet Vega, p.8. | Factory-verified |
| F41 | Sport suspension | 1975–1980 | standard on 1975 2+2; in Spyder packages later GM Heritage factory kit — 1975 Chevrolet Vega, p.134. GM Heritage factory kit — 1980 Chevrolet Monza, p.13. | Factory-verified |
| D35 | Sport mirrors | 1975–1980 | black on Spyder GM Heritage factory kit — 1975 Chevrolet Monza, p.9. GM Heritage factory kit — 1980 Chevrolet Monza, p.13. | Factory-verified |
| CC1 | Removable glass roof panels | 1978–1980 | sky-roof style option | Single-source |
| U14 | Special instrumentation | 1975–1980 | Spyder content GM Heritage factory kit — 1977 Chevrolet Vega, p.9. GM Heritage factory kit — 1980 Chevrolet Monza, p.12. | Factory-verified |
| ES1 | Quiet Sound Group (acoustic insulation) | 1978 | GM Heritage factory kit — 1978 Chevrolet Monza, p.66. | Factory-verified |
Source document: chevrolet/vega-monza.md. Rows marked — record an option the factory offered whose RPO code is not documented in the consulted sources.