The B5.9 is a six-cylinder in-line/rotary fuel system design that uses 40% fewer parts than traditional diesels, thanks to its unitized design. Like all B Series engines, it is a proven power plant with mechanical fuel injection that meets ecological concerns in a highly efficient package.
Painstaking attention to details makes every B Series engine reliable and durable. They'll be on the job, for years to come.

| Dòng động cơ | 6B5.9 |
| Cấu hình động cơ | Thẳng hàng, 6 xi lanh |
| Dung tích | 5.9 L |
| Công suất (diesel) | 80-173 HP |
| Công suất (gas) | 69 |
| Hút khí | NA, T, TA, TAA |
| Hệ thống nhiên liệu | Bơm phun trực tiếp/Bơm phun quay |
| Kích thước (mm) | 1016 x 632 x 963 |
| Trọng lượng (Kg) | 452 |
| Khí thải | Tuân thủ BS III CEV |