PartsByCodespare parts by code

Boiler Assembly Tool

Part number (MPN)
6050900

OEM Replacement Part & Compatibility Table

Brand
Guide price (£)
Not available: check the current price with the seller
Source
retailer parts list
checked 2026-11-05
Fitting notes

Work on gas appliances must be carried out by a Gas Safe registered engineer. Check the model and serial number on the boiler data plate. Source: a parts retailer's list, not the manufacturer's: confirm the part number on the data plate or with the manufacturer before ordering.

Compatible appliances

  • CAST IRON 1R OF COMBI OIL
  • CAST IRON 2R OF COMBI OIL
  • CAST IRON RS 129 MK2 SYSTEM NG
  • CAST IRON RS 151 MK2 SYSTEM NG
  • CAST IRON RS 172 MK2 SYSTEM NG
  • CAST IRON RS 194 MK2 SYSTEM NG
  • CAST IRON RS 279 MK2 SYSTEM NG
  • CAST IRONRMG 110MK2 REGULAR NG
  • CAST IRONRMG 70 MK2 REGULAR NG
  • CAST IRONRMG 90 MK2 REGULAR NG

Always check the model and serial number on the data plate before ordering.

Frequently asked questions

Which appliances does 6050900 fit?

The sources we checked list 6050900 (Boiler Assembly Tool, Sime) for: CAST IRON 1R OF COMBI OIL, CAST IRON 2R OF COMBI OIL, CAST IRON RS 129 MK2 SYSTEM NG, CAST IRON RS 151 MK2 SYSTEM NG, CAST IRON RS 172 MK2 SYSTEM NG, CAST IRON RS 194 MK2 SYSTEM NG, CAST IRON RS 279 MK2 SYSTEM NG, CAST IRONRMG 110MK2 REGULAR NG, CAST IRONRMG 70 MK2 REGULAR NG, CAST IRONRMG 90 MK2 REGULAR NG. Always check the model and serial number on the data plate before ordering.

Does 6050900 have equivalent or superseded part numbers?

The sources we checked list no equivalents for 6050900. Ask a Sime stockist to confirm.

What should I check before fitting 6050900?

Work on gas appliances must be carried out by a Gas Safe registered engineer. Check the model and serial number on the boiler data plate. Source: a parts retailer's list, not the manufacturer's: confirm the part number on the data plate or with the manufacturer before ordering.

Related parts

View on eBay

Some lists are dated and the part may have been superseded. Information only, compatibility not guaranteed.