


Sandvik / Tamrock
550 475 74b Pilot light
DT820
| Part Number | 550 475 74b |
| Description | Pilot light |
| Brand | Sandvik (Tamrock) |
| Assembly | Cartridge injection system control |
| Type | Drill Rig Spare Part |
Quick answer
550 475 74b (also written 55047574b, 550-475-74b, or 550.475.74b) is a Sandvik pilot light spare part used in the Cartridge injection system control assembly of the Sandvik DT820. Verified compatible with 2 Sandvik machine models including DS510-C, DT820. Available as an aftermarket replacement drill part from BK Drilling — Turkey-based Sandvik and Epiroc spare parts supplier serving mining contractors worldwide. Quote on request via WhatsApp; typical lead time 3-7 days for stock items.
Part code alternate forms: 55047574b, 550 475 74b, 550-475-74b.
Compatible machines
2
OEM cross-reference
550 475 74b
About Sandvik 550 475 74b Pilot light
An essential element of the Cartridge injection system control in the Sandvik DT820, this part is designed to meet the exacting standards required for underground and surface drilling equipment. Timely replacement prevents costly cascading failures in critical machine systems.
This is an OEM-compatible aftermarket replacement part for the Sandvik DT820 (DT820). Also compatible with Tamrock branded equipment of the same model series. BK Drilling supplies this part with fast worldwide shipping and competitive pricing.
Frequently asked questions
Why use OEM-compatible parts for Sandvik drilling equipment?
OEM-compatible parts are manufactured to the same dimensional tolerances and material specifications as original components, ensuring proper fit, reliable performance, and maintaining the designed safety margins of the drilling machine.






