Oil Level Windows
Article Number | Model | Design | Version | |
 | 2197101 | Natural glass | Aluminium hex. 27 mm | M24 x 1.5 with reflector / NBR O-Ring |
 | 2197700 | Natural glass | Aluminium hex. 32 mm | M27 x 1.5 with reflector / NBR O-Ring |
 | 2197710 | Natural glass | V2A hex. 32 mm | M27 x 1.5 with reflector / FKM O-Ring |
| 2197715 | Natural glass | V4A hex. 32 mm | M27 x 1.5 with reflector / FKM O-Ring |
 | 2198300 | Natural glass | Aluminium hex. 41 mm | M33 x 1.5 with reflector / NBR O-Ring |