| Dennis Fire Engines | ||
| RS | Fixed Double Cab | 7' 6" |
| SS | Separate Tilting Front Cab | 7' 6" |
| DS | Separate Tilting Front Cab | 7' 0" |
| DFD | Fixed Double Cab | 8' 2" |
| DFS | Separate Tilting Front Cab | 8' 2" |
| DRS | Fixed Double Cab | 8' 2" |
| 130 | Perkins V8 540 (180 BHP) | Turner T5.400 Manual Gearbox |
| 131 | Perkins V8 540 (180 BHP) | Allison MT.643 Automatic Gearbox |
| 132 | Perkins V8 540 (180 BHP) | ZF S6.65 Manual Gearbox |
| 133 | Perkins V8 640 (215 BHP) | Allison MT.643 Automatic Gearbox |
| 134 | Perkins TV8 540 (215 BHP) | ZF S6.65 Manual Gearbox |
| 135 | Perkins TV8 540 (215 BHP) | Allison MT.643 Automatic Gearbox |
| 137 | Perkins TV8 540 (215 BHP) | Allison MT.643 Automatic Gearbox |
| 151 | Perkins T6.354.4 (159 BHP) | Allison MT.643 Automatic Gearbox |
| 153 | Perkins Phaser YD (180 BHP) | Allison MT.643 Automatic Gearbox |
| 155 | Perkins Phaser YD (210 BHP) | Allison MT.643 Automatic Gearbox |
| 233 | Cummins 6CT (211 BHP) | ZF.5 HP 500 Automatic Gearbox |
| 234 | Cummins 6CT (211 BHP) | ZF.S6 65 Manual Gearbox |
| 235 | Cummins 6CT (211 BHP) | Euro 1 MT.643 |
| 237 | Cummins 6CTA (240 BHP) | Allison MT.643 Automatic Gearbox |
| 239 | Cummins 6CTA (240 BHP) | Euro 1 ZF Automatic Gearbox |
| 241 | Cummins 6CTA (250 BHP) | Euro 1 MT.643 |
| 243 | Cummins 6CTA (250 BHP) | Euro 1 World Series |
| 245 | Cummins 6CTA (250 BHP) | Euro 1 ZF Automatic Gearbox |
| R | Right Hand Drive | |
| 3 | Series of vehicle | |
| A | Variation of vehicle type | |