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Johnson & Starley Wiring Harness (MAF) J650-0519005

Johnson & Starley

Johnson & Starley Wiring Harness (MAF) J650-0519005

Wiring harness (MAF) for Johnson & Starley warm air units and boilers, part number J650-0519005.

At a glance

  • Part type: wiring harness (MAF)
  • Also known as 1691277
Manufacturer part no.
J650-0519005
GC number
245-137
Showing prices

£171.70

£143.08 ex. VAT · VAT at 20%

Available to order · 3 working days
Available to order · 3 working days
Not certain it's the right part? The technical team verifies fitment before dispatch — no charge, and it stops a second trip.Call the technical teamSend a technical question

Same-day dispatch

Ordered by 4pm Mon–Fri, 10:30am Sat.

30-day returns

Unused, in original packaging.

What it is

The wiring harness (MAF) is a Johnson & Starley electrical loom used on the manufacturer's warm air units and boilers. It carries the wiring connections associated with the MAF circuit, linking the relevant components within the appliance. It is supplied as a single harness assembly under part number J650-0519005.

Signs this part needs replacing

  • Intermittent or failed operation of the MAF circuit on the appliance
  • Damaged, cracked or heat-brittled insulation on the harness wiring
  • Corroded, loose or burnt connector terminals
  • Fault codes or fault indications traced to the MAF wiring
  • Visible chafing or breakage of conductors in the loom

Before you order

  • Check the appliance rating plate to confirm the exact model and GC number
  • Confirm the existing harness part number matches J650-0519005
  • Inspect the connector type and pin arrangement against the existing harness
  • Verify the fault lies with the harness rather than the MAF component itself

Not sure which part?

Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.