Pentair Manifold Kit for MasterTemp & Max-E-Therm 400K BTU Gas Heaters | 77707-0016
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- SKU:
- 77707-0016
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About This Item
The Pentair 77707-0016 is the OEM replacement Manifold Kit for Pentair MasterTemp 400NA and 400LP and Sta-Rite (Pentair) Max-E-Therm 400 gas pool heaters. If your heater is exhibiting combustion problems, error codes, or visible manifold damage, this factory kit restores the full manifold assembly to original specification.
⚠️ IMPORTANT: COMPLETE KIT — NOT A SINGLE COMPONENT
This listing is a complete Manifold Kit containing multiple components. It is not a single manifold body or individual gasket. Review kit contents below before ordering.
⚠️ IMPORTANT: 400K BTU MODELS ONLY
This kit is designed for 400NA and 400LP models only. It is not intended for smaller MasterTemp or Max-E-Therm models. Verify your heater's model number and confirm against your equipment's exploded parts diagram before ordering.
⚠️ IMPORTANT: PROFESSIONAL INSTALLATION REQUIRED
Gas and electrical heater components must be serviced by a licensed pool professional or qualified HVAC technician. Do not attempt to service gas or high-voltage components without proper certification.
The manifold distributes gas to the burner assembly and supports proper combustion within the heater's water system. Damage, cracking, or failed gaskets can contribute to ignition failures, combustion irregularities, and unsafe operating conditions. This kit replaces the manifold assembly and all associated sealing and insulation components in a single service event.
Kit Contents
- Manifold Assembly (main body)
- O-Rings
- Refractory Insulation
- Igniter Gasket
- Blower Gasket
- Electrical System Components (Items 5–7)
Kit corresponds to Item Nos. 3–14, 21, and Item Nos. 5–7 in the Electrical System per the official Pentair parts diagram for 400NA/400LP models.
Specifications
| Pentair Part Number | 77707-0016 |
| Part Category | Water System — Manifold Kit |
| Quantity Included | Kit (multiple components — see Kit Contents above) |
| Fuel Type Compatibility | Natural Gas (NA) and Liquid Propane (LP) |
Fits Into
| Brand | Equipment Line | Model / Part Number | Notes |
| Pentair | MasterTemp — MasterTemp Series | 400NA | Natural Gas. Includes Item Nos. 3–14, 21, and Items 5–7 in Electrical System. |
| Pentair | MasterTemp — MasterTemp Series | 400LP | Liquid Propane. Includes Item Nos. 3–14, 21, and Items 5–7 in Electrical System. |
| Pentair (formerly Sta-Rite) | Max-E-Therm 400 NA/LP Series — Max-E-Therm Series | MAX-E-THERM-400-NA | 400 Models (NA & LP). Includes Nos. 3–14, 20–21, and 7–9 in Electrical System. |
| Pentair (formerly Sta-Rite) | Max-E-Therm 400 HD Series — Max-E-Therm Series | MAX-E-THERM-400-HD | 400 HD Models. Includes Nos. 3–14, 20–21, and 7–9 in Electrical System. |
Compatibility is based on Pentair parts documentation and available OEM records. This is not an exhaustive list. For certainty, verify the part number in your equipment's manual or on the original part itself before ordering.
Pro Tip
Note that item number ranges differ slightly between MasterTemp and Max-E-Therm models (Electrical System Items 5–7 vs. 7–9). Before ordering, cross-reference this part number — 77707-0016 — directly against your heater's exploded parts diagram to confirm it matches your specific production run. While servicing the manifold, inspect the heat exchanger headers for scale buildup or corrosion, as both components are accessed during the same service procedure.
