| Part | Manufacturer | OEM Part # | Price | Notes |
| Pistons |
| 82.90MM |
| Standard |
| Engine 103.940: to Series 10-032120 | MGB | 1030301718 | 344.00 | Includes: 1 Piston with Rings |
| Engine 103.940: to Series 12-070067 | MGB | 1030302419 | 324.00 | Includes: 1 Piston with Rings |
| Engine 103.940: From Series 12-070068 to Series 12-087069 | MGB | 1030301718 | 344.00 | Includes: 1 Piston with Rings |
| Engine 103.940: From Series 12-087070 | MGB | 1030302819 | 302.00 | Includes: 1 Piston with Rings |
| 83.40MM |
| 1ST. Repair Size |
| Engine 103.940: to Series 10-032120 | MGB | 1030301818 | 274.00 | Includes: 1 Piston with Rings |
| Engine 103.940: to Series 12-070067 | MGB | 1030302519 | 390.00 | Includes: 1 Piston with Rings |
| Engine 103.940: From Series 12-070068 to Series 12-087069 | MGB | 1030301818 | 274.00 | Includes: 1 Piston with Rings |
| Engine 103.940: From Series 12-087070 | MGB | 1030302919 | 390.00 | Includes: 1 Piston with Rings |