Four Seasons 38628 A/C Orifice Tube - Front
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Four Seasons
 Orifice Tube

Four Seasons 38628 A/C Orifice Tube - Front

Brand Four Seasons 38628
Position Front
Color Colorless
Description Expansion Devices
Orifice Dia. IN 0.072
Pack in Qty of 1
Printed Foot Note See Evaporator Core Repair Kits When Orifice Tube Breaks Off Inside Evaporator Core
Style Standard
Type Orifice Tubes
Product line Orifice Tube
Fits Chevrolet and GMC · 23 vehicles

Standard orifice tube. Colorless expansion device for A/C flow restriction.

0.072-inch orifice. Precise opening helps regulate refrigerant flow.

Single-piece replacement for HVAC A/C systems.

Cross-references AMS Automotive 4602, Edelmann 92004 and Febi-Bilstein 38628 for the same application. See all 25.

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Four Seasons 38628 Orifice Tube Overview

Four Seasons 38628 is a standard A/C orifice tube for HVAC flow restriction and refrigerant metering in select Chevrolet and GMC applications. This colorless expansion device uses a 0.072 in. orifice diameter and is listed for 1973-1975 Chevrolet Blazer, 1973-1975 Chevrolet C10 Suburban, 1973-1975 Chevrolet C20 Suburban, 1973-1975 Chevrolet K10 Suburban, 1973-1975 Chevrolet K20 Suburban, and 1973-1974 GMC Jimmy front A/C systems.

The Four Seasons Orifice Tube line focuses on direct-fit HVAC flow restrictors for service work where the original metering device needs replacement. Part number 38628 is a standard-style orifice tube used in A/C systems that rely on fixed refrigerant flow control.

Key Features

  • Brand: Four Seasons
  • Brand line: Orifice Tube
  • Part number: 38628
  • Type: A/C orifice tube
  • Style: Standard
  • Orifice diameter: 0.072 in.
  • Color: Colorless
  • Category: HVAC > A/C Flow Restrictors

Detailed Description

Four Seasons 38628 is an HVAC expansion device used in fixed-orifice A/C systems to regulate refrigerant flow into the evaporator circuit. It is a direct replacement style part for service on classic Chevrolet and GMC trucks and SUVs, including Chevrolet C10, C20, C30, K10, K20, K5 Blazer, Blazer, and GMC Jimmy applications listed in the fitment data. If you are searching for a Chevrolet C10 orifice tube, GMC Jimmy A/C orifice tube, or a Four Seasons 38628 replacement for a front HVAC system, this part matches those vehicle-specific applications.

This part cross-references Edelmann 92004 for the same application.

What It Can Help Address

  • Restricted refrigerant flow through the A/C metering circuit
  • Loss of proper evaporator feed in fixed-orifice HVAC systems
  • Service replacement for a damaged or worn orifice tube
  • Restoration of A/C system flow control on listed Chevrolet and GMC models
  • Repair planning when the orifice tube breaks off inside the evaporator core

Installation Notes and Tips

Verify the vehicle’s A/C system uses an orifice tube before ordering. Confirm the 0.072 in. orifice size and match the application to the listed Chevrolet and GMC fitment, including front-position systems where specified. The product notes indicate that evaporator core repair kits should be used when the orifice tube breaks off inside the evaporator core. Clean the system and inspect related HVAC components before reassembly.

Quality Assurance

Four Seasons supplies HVAC service parts for automotive air conditioning repair, and this orifice tube is cataloged as a standard replacement component for the listed applications. Part number 38628 is identified with OE-style interchange references for application matching.

Related reading

This part fits 23 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
1975ChevroletC10N/ASee Evaporator Core Repair Kits for when Orifice Tube breaks off inside the evaporator core.; Orifice Tube
1975ChevroletC10 SuburbanFrontSee Evaporator Core Repair Kits for when Orifice Tube breaks off inside the evaporator core.; Orifice Tube
1975ChevroletC20N/ASee Evaporator Core Repair Kits for when Orifice Tube breaks off inside the evaporator core.; Orifice Tube
1975ChevroletC20 SuburbanFrontSee Evaporator Core Repair Kits for when Orifice Tube breaks off inside the evaporator core.; Orifice Tube
1975ChevroletC30N/ASee Evaporator Core Repair Kits for when Orifice Tube breaks off inside the evaporator core.; Orifice Tube
1975ChevroletK10N/ASee Evaporator Core Repair Kits for when Orifice Tube breaks off inside the evaporator core.; Orifice Tube
1975ChevroletK10 SuburbanFrontSee Evaporator Core Repair Kits for when Orifice Tube breaks off inside the evaporator core.; Orifice Tube
1975ChevroletK20N/ASee Evaporator Core Repair Kits for when Orifice Tube breaks off inside the evaporator core.; Orifice Tube
1975ChevroletK20 SuburbanFrontSee Evaporator Core Repair Kits for when Orifice Tube breaks off inside the evaporator core.; Orifice Tube
1975ChevroletK5 BlazerFrontSee Evaporator Core Repair Kits for when Orifice Tube breaks off inside the evaporator core.; Orifice Tube
1975GMCJimmyFrontSee Evaporator Core Repair Kits for when Orifice Tube breaks off inside the evaporator core.; Orifice Tube
1974ChevroletBlazerFrontSee Evaporator Core Repair Kits for when Orifice Tube breaks off inside the evaporator core.; Orifice Tube
1974ChevroletC10 SuburbanFrontSee Evaporator Core Repair Kits for when Orifice Tube breaks off inside the evaporator core.; Orifice Tube
1974ChevroletC20 SuburbanFrontSee Evaporator Core Repair Kits for when Orifice Tube breaks off inside the evaporator core.; Orifice Tube
1974ChevroletK10 SuburbanFrontSee Evaporator Core Repair Kits for when Orifice Tube breaks off inside the evaporator core.; Orifice Tube
1974ChevroletK20 SuburbanFrontSee Evaporator Core Repair Kits for when Orifice Tube breaks off inside the evaporator core.; Orifice Tube
1974GMCJimmyFrontSee Evaporator Core Repair Kits for when Orifice Tube breaks off inside the evaporator core.; Orifice Tube
1973ChevroletBlazerFrontSee Evaporator Core Repair Kits for when Orifice Tube breaks off inside the evaporator core.; Orifice Tube
1973ChevroletC10 SuburbanFrontSee Evaporator Core Repair Kits for when Orifice Tube breaks off inside the evaporator core.; Orifice Tube
1973ChevroletC20 SuburbanFrontSee Evaporator Core Repair Kits for when Orifice Tube breaks off inside the evaporator core.; Orifice Tube
1973ChevroletK10 SuburbanFrontSee Evaporator Core Repair Kits for when Orifice Tube breaks off inside the evaporator core.; Orifice Tube
1973ChevroletK20 SuburbanFrontSee Evaporator Core Repair Kits for when Orifice Tube breaks off inside the evaporator core.; Orifice Tube
1973GMCJimmyFrontSee Evaporator Core Repair Kits for when Orifice Tube breaks off inside the evaporator core.; Orifice Tube
Directly replaces or cross-references 25 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
AMS Automotive — 4602Edelmann — 92004Febi-Bilstein — 38628177011202091551172073092333267044237073097586280147589630278583031086308785831500123411472375862811138628A8291AC3303AC3303CCWK758628EX5117T38628