Trucks: B-B (Cast frame, Model MT-5050)
Engine: 12-244, 1,600 hp
Gear ratio: 65:18
Maximum speed: 75 mph
Operating weight (lbs.): 227,820
Tractive effort (lbs.): 53,000
Dynamic brake: Nos. Yes
Length: 56′ – 11 3/4″
Order no.: SO. 4322
Although some sources classify these locomotives as RS-10s, CN’s Diesel Unit Data Book for December 1964 refers to them as RS-10.
| Road no. | Class | Build date | Builder’s no. | Original road no. | Renumbered | Retired | Notes / disposition |
| 3815 | MR-16j | Oct 56 | 81559 | 3066 | 1957 | Dec 9 68 | |
| 3816 | MR-16j | Oct 56 | 81560 | 3067 | 1957 | Aug 23 69 | |
| 3817 | MR-16j | Oct 56 | 81561 | 3068 | 1957 | Jun 16 69 | |
| 3818 | MR-16j | Oct 56 | 81562 | 3069 | 1957 | Aug 29 68 | |
| 3819 | MR-16j | Oct 56 | 81563 | 3070 | 1957 | Apr 20 67 | |
| 3820 | MR-16j | Oct 56 | 81564 | 3071 | 1957 | Jun 16 70 | To United Railway Supply, scrapped |
| 3821 | MR-16j | Oct 56 | 81565 | 3072 | 1957 | Mar 1 68 | Scrapped Moncton NB |
| 3822 | MR-16j | Oct 56 | 81566 | 3073 | 1957 | Apr 20 67 | Scrapped Moncton NB |