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Biasi Fork P21.5 BI1621100

Biasi

Biasi Fork P21.5 BI1621100

Fork P21.5, part BI1621100, for Biasi Basica COND and Rinnova Adaptive boilers, fitted as part of the pump assembly.

At a glance

  • Part type: fork for pump
  • Also known as 1651780
Manufacturer part no.
BI1621100
Showing prices

£3.36

£2.80 ex. VAT · VAT at 20%

Available to order · 7 working days
Available to order · 7 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 Fork P21.5 is a pump component manufactured by Biasi and supplied under part number BI1621100. It forms part of the pump assembly on Biasi Basica COND and Rinnova Adaptive boilers, where it links the pump to the surrounding mechanism. It is a small mechanical part and is replaced when worn, cracked or no longer seated correctly.

Signs this part needs replacing

  • The pump does not engage or run when there is a demand for heat or hot water
  • Grinding, rattling or knocking from the pump and linkage area
  • The fork is visibly cracked, bent, deformed or worn at the contact points
  • The fork has come adrift or no longer sits correctly in its location
  • Intermittent heating or hot water that points to the pump linkage rather than the pump itself

Before you order

  • Confirm your boiler model against the fitment list above
  • Check the GC number on the appliance data badge against your model
  • Inspect the existing fork for damage and confirm the P21.5 designation and BI1621100 part number
  • Check the pump and surrounding linkage for any further damage before fitting

Not sure which part?

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