HomeHVAC > Temperature Controls and Related ComponentsFour Seasons 84703 HVAC Heater Control Valve
Part #: 84703

Four Seasons 84703 HVAC Heater Control Valve

Shut-off Valve
⚙️ 8 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Shut-off Valve
🚗Fitment: Dodge and Jeep, D100 Pickup, D200 Pickup, D300 Pickup, RM350, W100 Pickup, W200 Pickup, W300 Pickup, CJ5, CJ6, A100, A100 Truck, CJ5A, CJ6A, and CJ3
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Overview of Four Seasons Shut-off Valve 84703 for Jeep CJ5

The Four Seasons Shut-off Valve 84703 is a steel HVAC heater control valve designed specifically for Jeep CJ5 models. This manual shut-off valve provides precise control over your vehicle's heating system, ensuring reliable operation and temperature regulation.

  • Constructed from durable steel for long-lasting performance
  • Manual operation type for straightforward control
  • Fitting sizes: 5/8 inch hose to 3/8 inch male pipe thread
  • Compact dimensions with overall depth of 2.5 inches and overall length of 2.75 inches
  • Designed for heater fittings with specific inlet and outlet measurements

Detailed Product Description and Specifications

The Four Seasons Shut-off Valve 84703 is engineered to meet the HVAC temperature control needs of Jeep CJ5 vehicles. Made from steel, this valve offers durability and resistance to wear in demanding automotive environments. It features a manual operation type, allowing drivers to easily regulate the flow of coolant through the heater core. The valve includes a 5/8 inch hose fitting on one end and a 3/8 inch male pipe thread on the other, connected by a 90-degree handle for convenient installation and operation.

Key dimensions include a center B width of 2.25 inches (57.15 mm), an overall B length of 2.75 inches (69.85 mm), and an overall depth of 2.5 inches (63.5 mm). The inlet diameter measures 0.625 inches (15.875 mm), with an inlet length of 0.8125 inches (20.638 mm), while the outlet length is 0.625 inches (15.875 mm). These precise measurements ensure compatibility with the Jeep CJ5's existing heater system components.

About the Four Seasons Shut-off Valve Product Line

The Four Seasons Shut-off Valve line focuses on providing reliable HVAC heater control valves designed for specific vehicle applications. This product line emphasizes manual operation valves that facilitate effective temperature control by shutting off or regulating coolant flow within the heating system. The 84703 valve is part of this line, offering a tailored fit and function for Jeep CJ5 models, ensuring proper heater performance and system integrity.

Common Applications and Issues Addressed

  • Regulates coolant flow to the heater core for temperature control
  • Prevents coolant leaks by providing a secure shut-off mechanism
  • Replaces faulty or worn heater control valves in Jeep CJ5 HVAC systems
  • Helps resolve inconsistent cabin heating or overheating issues
  • Supports maintenance of proper heater core pressure and flow

Installation Notes and Tips

  • Ensure compatibility with Jeep CJ5 heater fittings before installation
  • Use appropriate tools to avoid damaging the 5/8 inch hose and 3/8 inch male pipe thread fittings
  • Verify the manual operation handle moves freely and seals properly
  • Inspect surrounding hoses and connections for wear during replacement
  • Follow vehicle manufacturer guidelines for HVAC system servicing

Quality Assurance and Warranty Information

Four Seasons manufactures the 84703 shut-off valve with high-quality steel materials to meet OEM standards for durability and performance. While specific warranty details are not provided here, Four Seasons products typically come with a limited warranty covering defects in materials and workmanship. This valve is designed to maintain reliable operation within the Jeep CJ5 heating system, supporting consistent vehicle HVAC performance.

BrandFour Seasons
Part Number84703
PositionShut-off Valve
Center B Width IN2.250
Center B Width MM57.150
Center Width IN1.750
Center Width MM44.450
DescriptionHeater Fittings
Fitting Size End 10.625
Fitting Size End 2.375
Inlet B Length IN0.875
Inlet B Length MM22.225
Inlet Dia. Fraction5/8
Inlet Dia. IN0.625
Inlet Dia. MM15.875
Inlet Length IN0.8125
Inlet Length MM20.638
MaterialSteel
Opening IN0.625
Opening MM15.875
Operation TypeManual
Outlet C Length IN0.750
Outlet C Length MM19.050
Outlet D Length IN1.0625
Outlet D Length MM26.988
Outlet Length IN0.625
Outlet Length MM15.875
Overall B Length IN2.750
Overall B Length MM69.850
Overall Depth IN2.500
Overall Depth MM63.500
Printed Foot Note5/8 in. Hose to 3/8 in. Male Pipe Thread; 90° in.T in. Handle
StyleManual
Thread Size3/8
TypeShut-off Valve

This part fits 8 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
1971JeepCJ52.2LL4N/AManual Control. w/o Windshield Defroster Kit; Shut-off Valve
1970JeepCJ52.2LL4N/AManual Control. w/o Windshield Defroster Kit; Shut-off Valve
1969JeepCJ52.2LL4N/AManual Control. w/o Windshield Defroster Kit; Shut-off Valve
1968JeepCJ52.2LL4N/AManual Control. w/o Windshield Defroster Kit; Shut-off Valve
1968JeepCJ53.1LL4N/AManual Control. w/o Windshield Defroster Kit; Shut-off Valve
1968JeepCJ53.2LL4N/AManual Control. w/o Windshield Defroster Kit; Shut-off Valve
1967JeepCJ52.2LL4N/AManual Control. w/o Windshield Defroster Kit; Shut-off Valve
1966JeepCJ52.2LL4N/AManual Control. w/o Windshield Defroster Kit; Shut-off Valve

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

05900581107711184703113552291515915533915583417316219193772200033204072219891246240249904025610301911630404410487C9157020960453G166014026706478036028470388917643917463931103A16764AM89620C4TZ18495AC7NN18495ACWK803602E806001FDA18495AFDA18495DH502H964WV240YG124

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.