OE Quality
60-Day Returns

Four Seasons 38628 A/C Orifice Tube - Front
Reliable A/C Orifice Tube for Chevrolet and GMC Models
The Four Seasons Orifice Tube 38628 is designed to regulate refrigerant flow in your vehicle's air conditioning system. Compatible with various Chevrolet and GMC trucks and SUVs, this colorless, standard-style orifice tube ensures proper expansion and cooling performance.
- Brand: Four Seasons
- Brand Line: Orifice Tube
- Part Number: 38628
- Orifice Diameter: 0.072 inches
- Colorless, standard style A/C orifice tube
- Packaged individually (Qty of 1)
- Compatible with Chevrolet and GMC Blazer, C10, C20, C30, Jimmy, K5 Blazer, K10, and K20 models
About the Four Seasons Orifice Tube Product Line
The Four Seasons Orifice Tube product line focuses on providing precise expansion devices for automotive air conditioning systems. These orifice tubes are engineered to maintain optimal refrigerant flow and pressure, contributing to efficient cooling and system reliability. The 38628 model fits a range of Chevrolet and GMC vehicles, ensuring compatibility and performance within the brand's HVAC components.
Product Details and Specifications
This A/C orifice tube features a 0.072-inch orifice diameter, which controls the refrigerant flow from the condenser to the evaporator. Its colorless design and standard style make it a direct replacement part for the specified Chevrolet and GMC models, including the Blazer, C10 Suburban, C20 Suburban, and K20 Suburban. The part number 38628 identifies this specific orifice tube within the Four Seasons catalog, facilitating accurate ordering and fitment.
Common Applications and Issues Addressed
- Regulates refrigerant flow in Chevrolet and GMC A/C systems
- Prevents improper expansion causing poor cooling performance
- Replaces damaged or clogged orifice tubes in Blazer, C10, and K-series models
- Helps resolve evaporator core issues related to orifice tube failure
- Maintains system pressure balance for consistent air conditioning operation
Installation Notes and Tips
When installing the Four Seasons Orifice Tube 38628, ensure the A/C system is properly evacuated and depressurized. Handle the orifice tube carefully to avoid damage or contamination. If the orifice tube has broken off inside the evaporator core, refer to evaporator core repair kits as noted in the product footnotes. Proper installation will help maintain system integrity and cooling efficiency.
Quality Assurance and Warranty
Four Seasons manufactures this orifice tube to meet OEM specifications for fit and function. While specific warranty details are not provided, Four Seasons products typically undergo rigorous quality control to ensure durability and reliable performance in automotive HVAC systems.
| Brand | Four Seasons |
|---|---|
| Part Number | 38628 |
| Position | Orifice Tube, 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 |
This part fits 23 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 1975 | Chevrolet | C10 | N/A | See Evaporator Core Repair Kits for when Orifice Tube breaks off inside the evaporator core.; Orifice Tube |
| 1975 | Chevrolet | C10 Suburban | Front | See Evaporator Core Repair Kits for when Orifice Tube breaks off inside the evaporator core.; Orifice Tube |
| 1975 | Chevrolet | C20 | N/A | See Evaporator Core Repair Kits for when Orifice Tube breaks off inside the evaporator core.; Orifice Tube |
| 1975 | Chevrolet | C20 Suburban | Front | See Evaporator Core Repair Kits for when Orifice Tube breaks off inside the evaporator core.; Orifice Tube |
| 1975 | Chevrolet | C30 | N/A | See Evaporator Core Repair Kits for when Orifice Tube breaks off inside the evaporator core.; Orifice Tube |
| 1975 | Chevrolet | K10 | N/A | See Evaporator Core Repair Kits for when Orifice Tube breaks off inside the evaporator core.; Orifice Tube |
| 1975 | Chevrolet | K10 Suburban | Front | See Evaporator Core Repair Kits for when Orifice Tube breaks off inside the evaporator core.; Orifice Tube |
| 1975 | Chevrolet | K20 | N/A | See Evaporator Core Repair Kits for when Orifice Tube breaks off inside the evaporator core.; Orifice Tube |
| 1975 | Chevrolet | K20 Suburban | Front | See Evaporator Core Repair Kits for when Orifice Tube breaks off inside the evaporator core.; Orifice Tube |
| 1975 | Chevrolet | K5 Blazer | Front | See Evaporator Core Repair Kits for when Orifice Tube breaks off inside the evaporator core.; Orifice Tube |
| 1975 | GMC | Jimmy | Front | See Evaporator Core Repair Kits for when Orifice Tube breaks off inside the evaporator core.; Orifice Tube |
| 1974 | Chevrolet | Blazer | Front | See Evaporator Core Repair Kits for when Orifice Tube breaks off inside the evaporator core.; Orifice Tube |
| 1974 | Chevrolet | C10 Suburban | Front | See Evaporator Core Repair Kits for when Orifice Tube breaks off inside the evaporator core.; Orifice Tube |
| 1974 | Chevrolet | C20 Suburban | Front | See Evaporator Core Repair Kits for when Orifice Tube breaks off inside the evaporator core.; Orifice Tube |
| 1974 | Chevrolet | K10 Suburban | Front | See Evaporator Core Repair Kits for when Orifice Tube breaks off inside the evaporator core.; Orifice Tube |
| 1974 | Chevrolet | K20 Suburban | Front | See Evaporator Core Repair Kits for when Orifice Tube breaks off inside the evaporator core.; Orifice Tube |
| 1974 | GMC | Jimmy | Front | See Evaporator Core Repair Kits for when Orifice Tube breaks off inside the evaporator core.; Orifice Tube |
| 1973 | Chevrolet | Blazer | Front | See Evaporator Core Repair Kits for when Orifice Tube breaks off inside the evaporator core.; Orifice Tube |
| 1973 | Chevrolet | C10 Suburban | Front | See Evaporator Core Repair Kits for when Orifice Tube breaks off inside the evaporator core.; Orifice Tube |
| 1973 | Chevrolet | C20 Suburban | Front | See Evaporator Core Repair Kits for when Orifice Tube breaks off inside the evaporator core.; Orifice Tube |
| 1973 | Chevrolet | K10 Suburban | Front | See Evaporator Core Repair Kits for when Orifice Tube breaks off inside the evaporator core.; Orifice Tube |
| 1973 | Chevrolet | K20 Suburban | Front | See Evaporator Core Repair Kits for when Orifice Tube breaks off inside the evaporator core.; Orifice Tube |
| 1973 | GMC | Jimmy | Front | See Evaporator Core Repair Kits for when Orifice Tube breaks off inside the evaporator core.; Orifice Tube |
* 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:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.