Pentair Onga 4in to 6in Flue Adapter for Gas Heater

Pentair Onga 4in to 6in Flue Adapter for Gas Heater (SF43-11-06)

The Onga SF43-11-06 is a genuine OEM flue adapter that converts a 4-inch flue outlet to a 6-inch flue connection on compatible Pentair Onga and MasterTemp gas pool heaters. Correct flue sizing is critical for safe combustion venting — using the right adapter ensures efficient exhaust flow and protects your heater from heat stress and incomplete combustion.

• Converts 4" (inch) inlet to 6" (inch) outlet flue connection
• Genuine Onga OEM spare part — part number SF43-11-06
• Suits Pentair MasterTemp gas pool and spa heaters
• 2kg — solid, durable construction
• Sold individually

Frequently Asked Questions

What does the Onga SF43-11-06 flue adapter do?

It adapts a 4-inch flue outlet on compatible Onga and MasterTemp gas heaters to a 6-inch flue connection, allowing correct venting where a larger flue pipe is required.

Which heaters is this flue adapter compatible with?

The SF43-11-06 suits Pentair MasterTemp gas pool and spa heaters. Please verify your heater's model number against your service manual or contact us to confirm compatibility before ordering.

Is this a genuine OEM part?

Yes. This is a genuine Onga OEM replacement part, ensuring correct fit and safe operation with your MasterTemp heater.

Why is correct flue sizing important for a gas heater?

Incorrect flue sizing can restrict exhaust flow, cause incomplete combustion, or lead to dangerous carbon monoxide buildup. Always use the manufacturer-specified flue adapter for your installation.

How much does the Onga flue adapter weigh?

The SF43-11-06 weighs approximately 2kg. Ensure your flue installation can support the combined weight of the adapter and connected flue pipe.