Continue shopping “SPX4000Z1 NorthStar EcoStar VS Hayward Pump Union / Diffuser O-ring” has been added to your cart. Product Price Quantity Total × 475978 Pentair ETI400 Heat Pump Fan Control Board $109.77 475978 Pentair ETI400 Heat Pump Fan Control Board quantity $109.77 × SPX4000Z1 NorthStar EcoStar VS Hayward Pump Union / Diffuser O-ring $5.46 SPX4000Z1 NorthStar EcoStar VS Hayward Pump Union / Diffuser O-ring quantity $5.46 Cart totals Subtotal $115.23 Shipping Shipping costs will be calculated once you have provided your address. Total $115.23 Proceed to checkout — OR — Calculate shipping Country / region: Select a country / region… United States (US) State / County: City: Postcode / ZIP: Update