Product Overview

The Pentair 460748 is a genuine OEM water system manifold replacement kit for Pentair MasterTemp 250 (250,000 BTU) natural gas and propane pool and spa heaters. The manifold directs water through the heat exchanger and holds the heater's key safety and sensor components. This kit replaces a worn, leaking, cracked or damaged manifold to restore proper water flow, bypass function and safety-sensor operation.

⚠️ Important Purchase Notice

Pool heater repairs involve water, electrical and gas systems. This kit should be installed by a qualified pool heater technician or experienced service professional following Pentair's service procedures. Inspect the shipment upon arrival and report damage promptly.

Ideal For

• Replacing a damaged or leaking manifold on a MasterTemp 250K heater.
• Servicing MasterTemp 250 natural gas or propane pool and spa heaters.
• Restoring proper water flow and pressure switch function.
• Professional pool heater repair and equipment pad service.

Key Features

• Genuine Pentair OEM part, number 460748.
• Fits MasterTemp 250 natural gas and propane models.
• Complete manifold service kit with sealing, bypass and sensor components.
• Includes new bolts, O-rings and O-ring lubricant for installation.

Benefits

• Stops leaks from a cracked, warped or worn manifold.
• Restores reliable water flow through the heater.
• Refreshes the water pressure switch, high limit, AGS and thermistor in one repair.
• OEM fit reduces installation issues.

Compatibility

Designed for Model 250 Pentair MasterTemp natural gas and propane pool and spa heaters (250K BTU). Confirm your heater model and part number before ordering.

Installation or Upgrade Context

Shut off gas, power and water flow to the heater. Remove the old manifold, transferring the pressure relief valve from the old manifold, then inspect all O-rings, seals, bypass components and sensor connections as you install the new kit. Check for leaks, confirm water flow, verify pressure switch operation and test heater startup according to Pentair service procedures.

What’s Included

Kit contents can vary by packaging, but the 460748 kit may include:

• Manifold assembly
• Coil/tubesheet sealing O-ring kit
• Manifold bypass kit
• Water pressure switch
• Connector tube kit
• Zinc plug
• Automatic gas shutoff (AGS) switch
• High limit switch
• Thermistor
• O-rings, gaskets, bolts, hardware and O-ring lubricant

The pressure relief valve is not included; reuse the one from your existing manifold. Compare the kit contents with your heater's parts diagram before installation.

Specifications

Warranty

Covered by Pentair’s manufacturer warranty, subject to Pentair’s applicable terms. Contact Pentair for warranty claim instructions; Pool Supply Depot can provide proof of purchase.

Customer Q&A

What heater does the 460748 fit?

Pentair MasterTemp 250K natural gas and propane pool and spa heaters.

Is this an OEM Pentair part?

Yes. It is a genuine Pentair replacement manifold kit.

Is the pressure relief valve included?

No. Move the relief valve over from your existing manifold.

Can I install this myself?

Professional installation is recommended because heater repairs involve water, electrical and gas systems.