| Year | Make | Model | Configuration | Positions | Application Notes |
|---|---|---|---|---|---|
| << < 19 20 21 22 23 24 25 26 27 28 > >> | |||||
| 1988 | Chevrolet | G30 | V8 454 7.4L | 14 mm Tapered Seat | |
| 1988 | Chevrolet | K1500 | V6 262 4.3L | 14 mm Tapered Seat | |
| 1988 | Chevrolet | K1500 | V8 305 5.0L; VIN H | 14 mm Tapered Seat | |
| 1988 | Chevrolet | K1500 | V8 350 5.7L; VIN K | 14 mm Tapered Seat | |
| 1988 | Chevrolet | K2500 | V6 262 4.3L | 14 mm Tapered Seat | |
| 1988 | Chevrolet | K2500 | V8 305 5.0L; VIN H | 14 mm Tapered Seat | |
| 1988 | Chevrolet | K2500 | V8 350 5.7L; VIN K | 14 mm Tapered Seat | |
| 1988 | Chevrolet | K3500 | V8 350 5.7L; VIN K | 14 mm Tapered Seat | |
| 1988 | Chevrolet | K3500 | V8 454 7.4L | 14 mm Tapered Seat | |
| 1988 | Chevrolet | LLV | L4 151 2.5L (2474cc) | 14 mm Tapered Seat | |
| 1988 | Chevrolet | Monte Carlo | V6 262 4.3L; VIN Z | 14 mm Tapered Seat | |
| 1988 | Chevrolet | Monte Carlo | V8 305 5.0L | 14 mm Tapered Seat | |
| 1988 | Chevrolet | P20 | L6 292 4.8L | 14 mm Tapered Seat | |
| 1988 | Chevrolet | P20 | V8 350 5.7L; VIN K | 14 mm Tapered Seat | |
| 1988 | Chevrolet | P30 | L6 292 4.8L | 14 mm Tapered Seat | |
| 1988 | Chevrolet | P30 | V8 350 5.7L; VIN K | 14 mm Tapered Seat | |
| 1988 | Chevrolet | P30 | V8 350 5.7L; VIN M | 14 mm Tapered Seat | |
| 1988 | Chevrolet | P30 | V8 454 7.4L | 14 mm Tapered Seat | |
| 1988 | Chevrolet | P40 | L6 292 4.8L | 14 mm Tapered Seat | |
| 1988 | Chevrolet | P40 | V6 262 4.3L | 14 mm Tapered Seat | |
| 1988 | Chevrolet | R10 Suburban | V8 350 5.7L; VIN K | 14 mm Tapered Seat | |
| 1988 | Chevrolet | R20 | L6 292 4.8L | 14 mm Tapered Seat | |
| 1988 | Chevrolet | R20 | V8 350 5.7L; VIN K | 14 mm Tapered Seat | |
| 1988 | Chevrolet | R20 | V8 454 7.4L | 14 mm Tapered Seat | |
| 1988 | Chevrolet | R20 Suburban | V8 350 5.7L; VIN K | 14 mm Tapered Seat | |
| 1988 | Chevrolet | R20 Suburban | V8 454 7.4L | 14 mm Tapered Seat | |
| 1988 | Chevrolet | R30 | L6 292 4.8L | 14 mm Tapered Seat | |
| 1988 | Chevrolet | R30 | V8 350 5.7L; VIN K | 14 mm Tapered Seat | |
| 1988 | Chevrolet | R30 | V8 350 5.7L; VIN M | 14 mm Tapered Seat | |
| 1988 | Chevrolet | R30 | V8 454 7.4L | 14 mm Tapered Seat | |
| 1988 | Chevrolet | S10 | L4 151 2.5L (2474cc) | 14 mm Tapered Seat | |
| 1988 | Chevrolet | S10 | V6 173 2.8L | 14 mm Tapered Seat | |
| 1988 | Chevrolet | S10 | V6 262 4.3L | 14 mm Tapered Seat | |
| 1988 | Chevrolet | S10 Blazer | L4 151 2.5L (2474cc) | 14 mm Tapered Seat | |
| 1988 | Chevrolet | S10 Blazer | V6 173 2.8L | 14 mm Tapered Seat | |
| 1988 | Chevrolet | S10 Blazer | V6 262 4.3L | 14 mm Tapered Seat | |
| 1988 | Chevrolet | V10 Suburban | V8 350 5.7L; VIN K | 14 mm Tapered Seat | |
| 1988 | Chevrolet | V20 Suburban | V8 350 5.7L; VIN K | 14 mm Tapered Seat | |
| 1988 | Chevrolet | V20 Suburban | V8 454 7.4L | 14 mm Tapered Seat | |
| 1988 | Chevrolet | V30 | L6 292 4.8L | 14 mm Tapered Seat | |
| 1988 | Chevrolet | V30 | V8 350 5.7L; VIN K | 14 mm Tapered Seat | |
| 1988 | Chevrolet | V30 | V8 350 5.7L; VIN M | 14 mm Tapered Seat | |
| 1988 | Chevrolet | V30 | V8 454 7.4L | 14 mm Tapered Seat | |
| 1988 | Ford | Bronco | V8 302 5.0L | 14 mm Tapered Seat | |
| 1988 | Ford | Bronco | V8 351 5.8L (5753cc) | 14 mm Tapered Seat | |
| 1988 | Ford | E-150 Econoline | V8 302 5.0L | 14 mm Tapered Seat | |
| 1988 | Ford | E-150 Econoline | V8 351 5.8L (5753cc) | 14 mm Tapered Seat | |
| 1988 | Ford | E-150 Econoline Club Wagon | V8 302 5.0L | 14 mm Tapered Seat | |
| 1988 | Ford | E-150 Econoline Club Wagon | V8 351 5.8L (5753cc) | 14 mm Tapered Seat | |
| 1988 | Ford | E-250 Econoline | V8 302 5.0L | 14 mm Tapered Seat | |