Sydney Performance Parts & Tyres

GFB FX-R & FX-D Fuel Pressure Regulator Replacement Diaphragm – Genuine Spare (GFB-8166)

GFB FX-R & FX-D Fuel Pressure Regulator Replacement Diaphragm – Genuine Spare (GFB-8166)GFB FX-R & FX-D Fuel Pressure Regulator Replacement Diaphragm – Genuine Spare (GFB-8166)

SKU: GFB-8166

AUD 26.95

In stock

Brand: GFB

The GFB 8166 replacement diaphragm is the genuine service part for the GFB FX-R and FX-D fuel pressure regulators. Fuel-resistant and built to the same spec as the diaphragm fitted at the factory, it restores accurate, stable fuel pressure control if your regulator has started creeping, fluctuating or weeping fuel from the vacuum port.

Pictured: GFB FX-R & FX-D replacement diaphragm, part number GFB-8166.

When to replace the diaphragm

  • Fuel pressure drifts or won't hold a steady set point
  • Fuel present in the vacuum/boost reference line
  • Regulator is several years old or has run E85/ethanol blends long-term
  • Rebuilding a regulator before a fresh engine build or tune

Features

  • Genuine GFB (Go Fast Bits) spare part – made in Australia
  • Direct replacement for the factory diaphragm in FX-R and FX-D regulators
  • Fuel and ethanol compatible
  • Straightforward fitment – no special tools required
  • Part number 8166

Fitment

Suits the following GFB regulators:

Note: this diaphragm does not suit the FX-S regulator – use the GFB 8156 FX-S replacement diaphragm instead.

Part number: GFB-8166 · Brand: GFB · Authorised GFB dealer · Sydney stock, ships Australia-wide from Prestons.

Related products