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Four Seasons 84788 HVAC Heater Control Valve
| Brand | Four Seasons 84788 |
|---|---|
| Material | Steel |
| Type | Shut-off valve |
| Center Width IN | 2.125 |
| Center Width MM | 53.975 |
| Description | Heater fittings |
| Fitting Size End 1 | 0.625 |
| Fitting Size End 2 | .375 |
| Inlet Dia. Fraction | 5/8 |
| Inlet Dia. IN | 0.625 |
| Inlet Dia. MM | 15.875 |
| Inlet Length IN | 0.500 |
| Inlet Length MM | 12.700 |
| Operation Type | Manual |
| Outlet C Length IN | 0.875 |
| Outlet C Length MM | 22.225 |
| Outlet Length IN | 0.625 |
| Outlet Length MM | 15.875 |
| Overall Depth IN | 2.500 |
| Overall Depth MM | 63.500 |
| Printed Foot Note | 5/8 in. hose to 3/8 in. npt; 90ΓΒ° heavy duty handle |
| Style | Manual |
| Thread Size | 3/8 |
| Fits | — |
Shut-off valve. Manual operation gives you direct control over heater flow.
Steel construction. Built for durable service in heater fittings.
5/8 in. to 3/8 in. Connects hose and NPT sizes for a straightforward fit.
Cross-references Anchor 2426, Focus Auto Parts 84788 and Gates 2430 for the same application. See all 20.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
Four Seasons 84788 Shut-off Valve Overview
Four Seasons 84788 is a manual HVAC heater control valve built for heater hose shutoff applications. It uses a steel body with a 5/8 in. hose inlet and 3/8 in. NPT outlet, plus a 90-degree heavy-duty handle for direct flow control in the heater circuit.
For drivers searching for a heater control valve for Ford F-150, Chevrolet C/K truck, or Dodge Ram heater hose service, this shut-off valve provides a straightforward replacement option in the Four Seasons Shut-off Valve line.
Key Features
- Steel construction for heater system service
- Manual operation with 90-degree heavy-duty handle
- 5/8 in. hose to 3/8 in. NPT connection style
- Inlet diameter: 5/8 in. (15.875 mm)
- Thread size: 3/8
- Overall depth: 2.500 in. (63.500 mm)
- Center width: 2.125 in. (53.975 mm)
Detailed Description
Four Seasons 84788 is an HVAC heater control valve used to shut off or regulate coolant flow through the heater circuit. The manual design gives direct control over heater flow, while the steel housing supports use in demanding underhood conditions. This part number, 84788, is specified with a 5/8 in. hose inlet, 3/8 in. NPT outlet, and compact dimensions that suit common heater hose routing layouts.
This Four Seasons Shut-off Valve is a practical choice when servicing heater hose plumbing on Ford F-150, Chevrolet C/K truck, and Dodge Ram applications that require a manual heater shut-off valve with a 5/8 in. hose to 3/8 in. NPT configuration. Part number 84788 is also referenced by cross numbers such as Gates 2430 and Anchor 2426 for the same application.
What It Helps Address
- Heater core flow that needs to be shut off manually
- Leaking or worn heater control valve assemblies
- Restricted heater hose routing at the firewall or engine bay
- Loss of cabin heat control caused by a faulty valve
- Replacement needs for 5/8 in. hose to 3/8 in. NPT heater fittings
Installation Notes and Tips
Verify hose size, thread size, and available clearance before installation. Match the 5/8 in. inlet and 3/8 in. threaded outlet to the existing heater plumbing, and confirm the valve orientation allows the 90-degree handle to move freely. Inspect heater hoses and fittings for wear before reassembly to reduce repeat service.
Quality Assurance
Four Seasons supplies HVAC temperature control components for automotive heating and cooling service. Part number 84788 is built as a manual shut-off valve for heater fittings and is specified with steel construction and defined dimensional measurements for accurate replacement selection.
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