Four Seasons 38730 A/C Expansion Valve
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Four Seasons
 Expansion Valve

Four Seasons 38730 A/C Expansion Valve

Brand Four Seasons 38730
Color Brass
Refrigerant Type R134A
Type TXV
Product line Expansion Valve
Fits Honda · 43 vehicles

TXV design. Precisely meters refrigerant flow for consistent A/C performance.

Brass construction. Offers durable corrosion resistance in the HVAC system.

R134A compatible. Built for use with R134A refrigerant systems.

Cross-references AMS Automotive 4647, Carlson 17506 and Dorman - HELP 38730 for the same application. See all 41.

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Four Seasons 38730 Expansion Valve

Four Seasons 38730 is a brass TXV A/C expansion valve for R134A systems. It regulates refrigerant flow into the evaporator to help maintain stable cooling performance in older Honda HVAC setups, including Civic, Prelude, and Accord applications.

Key Features

  • Brass construction
  • TXV design for refrigerant metering
  • Configured for R134A refrigerant
  • Four Seasons Expansion Valve product line
  • Direct replacement style for select Honda A/C systems

Product Details

The Four Seasons Expansion Valve line focuses on refrigerant control at the evaporator inlet, where accurate metering is critical for consistent A/C operation. Part number 38730 is specified as a brass TXV for R134A service and is listed for select Honda Civic, Honda Prelude, and Honda Accord vehicles. This part cross-references Dorman - HELP 38730 for the same application.

Compatible With 1985-1987 Honda Civic, Expansion Valve; 1987 Honda Civic, Keihin; Expansion Valve; 1985-1987 Honda Prelude, Expansion Valve; 1985-1987 Honda Prelude, Keihin; Expansion Valve; 1984-1986 Honda Civic, Keihin, Sanden Compressor; Expansion Valve; 1985 Honda Accord, Keihin, Sanden Compressor; Expansion Valve; 1984 Honda Accord, Keihin; Expansion Valve; 1982-1983 Honda Accord, Keihin, w/ Pace Product; Expansion Valve; 1976-1979 Honda Accord, Nippondenso; Expansion Valve.

Common Uses

  • Uneven cabin cooling caused by incorrect refrigerant metering
  • Restricted A/C flow at the evaporator inlet
  • Loss of cooling performance in R134A systems
  • Service replacement for worn or sticking expansion valves
  • Restoration work on select Honda Civic, Prelude, and Accord HVAC systems

Installation Notes

Verify the compressor type and system configuration before ordering, since fitment notes include Keihin, Sanden Compressor, Nippondenso, and Pace Product applications. Match the vehicle year, model, and HVAC setup exactly to the listed fitment for Honda Civic, Honda Prelude, and Honda Accord. Clean the system and confirm correct refrigerant service procedures during installation.

Quality Assurance

Four Seasons catalogs this part as an HVAC flow restrictor component for specific OE-style applications. Use the listed fitment and refrigerant type to confirm proper selection for your vehicle.

Related reading

This part fits 43 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelSubmodelLitersCylindersPositionNotes
1987HondaCivicBase——N/AExpansion Valve
1987HondaCivicDX——N/AExpansion Valve
1987HondaCivic1500 S——N/AExpansion Valve
1987HondaCivicSi——N/AExpansion Valve
1987HondaCivicCRX——N/AExpansion Valve
1987HondaCivicCRX——N/AKeihin; Expansion Valve
1987HondaCivicCRX HF——N/AExpansion Valve
1987HondaCivicCRX HF——N/AKeihin; Expansion Valve
1987HondaCivicCRX Si——N/AExpansion Valve
1987HondaCivicCRX Si——N/AKeihin; Expansion Valve
1987HondaPrelude—1.8LL4N/AExpansion Valve
1987HondaPrelude—2.0LL4N/AKeihin; Expansion Valve
1986HondaCivicBase——N/AExpansion Valve
1986HondaCivicDX——N/AExpansion Valve
1986HondaCivicSi——N/AExpansion Valve
1986HondaCivicCRX——N/AExpansion Valve
1986HondaCivicCRX——N/AKeihin, Sanden Compressor; Expansion Valve
1986HondaCivicCRX HF——N/AExpansion Valve
1986HondaCivicCRX HF——N/AKeihin, Sanden Compressor; Expansion Valve
1986HondaCivicCRX Si——N/AExpansion Valve
1986HondaCivicCRX Si——N/AKeihin, Sanden Compressor; Expansion Valve
1986HondaPrelude—1.8LL4N/AExpansion Valve
1986HondaPrelude—2.0LL4N/AKeihin; Expansion Valve
1985HondaAccord———N/AKeihin, Sanden Compressor; Expansion Valve
1985HondaCivicBase——N/AExpansion Valve
1985HondaCivicDX——N/AExpansion Valve
1985HondaCivic1500 S——N/AExpansion Valve
1985HondaCivicCRX——N/AExpansion Valve
1985HondaCivicCRX——N/AKeihin, Sanden Compressor; Expansion Valve
1985HondaCivicCRX HF——N/AExpansion Valve
1985HondaCivicCRX HF——N/AKeihin, Sanden Compressor; Expansion Valve
1985HondaCivicCRX Si——N/AExpansion Valve
1985HondaCivicCRX Si——N/AKeihin, Sanden Compressor; Expansion Valve
1985HondaPrelude—1.8LL4N/AExpansion Valve
1985HondaPrelude—2.0LL4N/AKeihin; Expansion Valve
1984HondaAccord———N/AKeihin; Expansion Valve
1984HondaCivic—1.5LL4N/AKeihin, Sanden Compressor; Expansion Valve
1983HondaAccord———N/AKeihin; w/ Pace Product; Expansion Valve
1982HondaAccord———N/AKeihin; w/ Pace Product; Expansion Valve
1979HondaAccord———N/ANippondenso; Expansion Valve
1978HondaAccord———N/ANippondenso; Expansion Valve
1977HondaAccord———N/ANippondenso; Expansion Valve
1976HondaAccord———N/ANippondenso; Expansion Valve
Directly replaces or cross-references 41 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
AMS Automotive — 4647Carlson — 17506Dorman - HELP — 38730Four Seasons — 57384Global Parts Distributors LLC — 3411264UAC — EX7008C67B40B6A3402038650SA566138650SA700338650SA700438650SB266115578618220220738420820220836330613775873080702993873037587301113873019189796889195433865068069138650680961A9909AC3141CAC3862AC3862CCWK758730EX7008FE202FE363FJSE1017FJSE1066FJSE2066SE1017SE1066T38730