Continue shopping “SPX4000Z1 NorthStar EcoStar VS Hayward Pump Union / Diffuser O-ring” has been added to your cart. Product Price Quantity Total × SPX4000Z1 NorthStar EcoStar VS Hayward Pump Union / Diffuser O-ring $4.99 SPX4000Z1 NorthStar EcoStar VS Hayward Pump Union / Diffuser O-ring quantity $4.99 Cart totals Subtotal $4.99 Shipping Shipping costs will be calculated once you have provided your address. Total $4.99 Proceed to checkout — OR — Calculate shipping Country / region: Select a country / region… United States (US) State / County: City: Postcode / ZIP: Update