| Year | Make | Model | Configuration | Positions | Application Notes |
|---|---|---|---|---|---|
| << < 51 52 53 54 55 56 57 58 59 60 > >> | |||||
| 1980 | Buick | Electra | V6 252 4.1L; VIN 4 | 14 mm Tapered Seat | |
| 1980 | Buick | Electra | V8 301 4.9L; VIN W | 14 mm Tapered Seat | |
| 1980 | Buick | Electra | V8 350 5.7L; VIN X | 14 mm Tapered Seat | |
| 1980 | Buick | Estate Wagon | V8 301 4.9L; VIN W | 14 mm Tapered Seat | |
| 1980 | Buick | Estate Wagon | V8 350 5.7L; VIN X | 14 mm Tapered Seat | |
| 1980 | Buick | LeSabre | V6 231 3.8L (3800cc) | 14 mm Tapered Seat | |
| 1980 | Buick | LeSabre | V6 252 4.1L; VIN 4 | 14 mm Tapered Seat | |
| 1980 | Buick | LeSabre | V8 301 4.9L; VIN W | 14 mm Tapered Seat | |
| 1980 | Buick | LeSabre | V8 350 5.7L; VIN X | 14 mm Tapered Seat | |
| 1980 | Buick | Regal | V6 231 3.8L (3800cc) | 14 mm Tapered Seat | |
| 1980 | Buick | Regal | V8 301 4.9L; VIN W | 14 mm Tapered Seat | |
| 1980 | Buick | Regal | V8 305 5.0L; VIN H | 14 mm Tapered Seat | |
| 1980 | Buick | Riviera | V6 231 3.8L (3800cc) | 14 mm Tapered Seat | |
| 1980 | Buick | Skyhawk | V6 231 3.8L (3800cc) | 14 mm Tapered Seat | |
| 1980 | Buick | Skylark | L4 151 2.5L (2474cc); VIN 5 | 14 mm Tapered Seat | |
| 1980 | Buick | Skylark | V6 173 2.8L | 14 mm Tapered Seat | |
| 1980 | Cadillac | DeVille | V6 252 4.1L; VIN 4 | 14 mm Tapered Seat | |
| 1980 | Cadillac | DeVille | V8 350 5.7L | 14 mm Tapered Seat | |
| 1980 | Cadillac | Eldorado | V8 350 5.7L | 14 mm Tapered Seat | |
| 1980 | Cadillac | Fleetwood | V6 252 4.1L; VIN 4 | 14 mm Tapered Seat | |
| 1980 | Cadillac | Fleetwood | V8 350 5.7L | 14 mm Tapered Seat | |
| 1980 | Cadillac | Seville | V8 350 5.7L | 14 mm Tapered Seat | |
| 1980 | Chevrolet | B60 | V8 366 6.0L | 14 mm Tapered Seat | |
| 1980 | Chevrolet | B60 | V8 427 7.0L | 14 mm Tapered Seat | |
| 1980 | Chevrolet | C10 | L6 250 4.1L | 14 mm Tapered Seat | |
| 1980 | Chevrolet | C10 | L6 292 4.8L | 14 mm Tapered Seat | |
| 1980 | Chevrolet | C10 | V8 305 5.0L | 14 mm Tapered Seat | |
| 1980 | Chevrolet | C10 | V8 350 5.7L | 14 mm Tapered Seat | |
| 1980 | Chevrolet | C10 | V8 400 6.6L | 14 mm Tapered Seat | |
| 1980 | Chevrolet | C10 | V8 454 7.4L | 14 mm Tapered Seat | |
| 1980 | Chevrolet | C10 Suburban | L6 250 4.1L | 14 mm Tapered Seat | |
| 1980 | Chevrolet | C10 Suburban | V8 350 5.7L | 14 mm Tapered Seat | |
| 1980 | Chevrolet | C10 Suburban | V8 454 7.4L | 14 mm Tapered Seat | |
| 1980 | Chevrolet | C20 | L6 250 4.1L | 14 mm Tapered Seat | |
| 1980 | Chevrolet | C20 | L6 292 4.8L | 14 mm Tapered Seat | |
| 1980 | Chevrolet | C20 | V8 350 5.7L | 14 mm Tapered Seat | |
| 1980 | Chevrolet | C20 | V8 400 6.6L | 14 mm Tapered Seat | |
| 1980 | Chevrolet | C20 | V8 454 7.4L | 14 mm Tapered Seat | |
| 1980 | Chevrolet | C20 Suburban | L6 292 4.8L | 14 mm Tapered Seat | |
| 1980 | Chevrolet | C20 Suburban | V8 350 5.7L | 14 mm Tapered Seat | |
| 1980 | Chevrolet | C20 Suburban | V8 400 6.6L | 14 mm Tapered Seat | |
| 1980 | Chevrolet | C20 Suburban | V8 454 7.4L | 14 mm Tapered Seat | |
| 1980 | Chevrolet | C30 | L6 250 4.1L | 14 mm Tapered Seat | |
| 1980 | Chevrolet | C30 | L6 292 4.8L | 14 mm Tapered Seat | |
| 1980 | Chevrolet | C30 | V8 350 5.7L | 14 mm Tapered Seat | |
| 1980 | Chevrolet | C30 | V8 454 7.4L | 14 mm Tapered Seat | |
| 1980 | Chevrolet | C50 | L6 292 4.8L | 14 mm Tapered Seat | |
| 1980 | Chevrolet | C60 | L6 292 4.8L | 14 mm Tapered Seat | |
| 1980 | Chevrolet | C60 | V8 366 6.0L | 14 mm Tapered Seat | |
| 1980 | Chevrolet | C70 | V8 366 6.0L | 14 mm Tapered Seat | |