OE Quality
60-Day Returns

Four Seasons 178399 A/C Compressor
Overview of Four Seasons New Compressor 178399
The Four Seasons New Compressor 178399 is designed specifically for Ford Focus models requiring reliable HVAC performance. This A/C compressor supports both R-134a and R1234yf refrigerants, ensuring compatibility with modern vehicle air conditioning systems.
- Compatible refrigerant types: R-134a or R1234yf
- Includes oil for optimal lubrication
- 4-groove serpentine pulley for efficient belt engagement
- Pin-type electrical terminal with 1 wire lead coil clock position
- Clutch included with a maximum diameter of 4.25 inches
- 12-volt coil voltage for standard vehicle electrical systems
- Tangent mount type for secure installation
- Compressor type: 6sbh14c Nippondenso design
- Includes three O-rings ([24257], [24642], [24243]) for proper sealing
About the Four Seasons New Compressor Product Line
The Four Seasons New Compressor line offers brand-new, direct replacement compressors engineered to meet OEM specifications. This product line focuses on delivering reliable HVAC components that maintain factory performance standards. The New Compressor 178399 is part of this line, providing a fresh, fully assembled compressor unit designed for straightforward installation and long-term durability.
Detailed Product Description
This Four Seasons A/C compressor features a 4-groove serpentine pulley with a diameter of approximately 4.25 inches (107.95 mm), designed to match the Ford Focus belt system. The clutch assembly is included, with a maximum diameter of 4.25 inches and a distance from clutch to mounting flange of 1.59375 inches, ensuring proper fit and function. The compressor operates on a 12-volt coil with a pin-type terminal and a single wire lead coil clock position, simplifying electrical connections. It is a tangent mount type, compatible with the vehicle’s mounting points. The unit comes pre-filled with oil and includes three O-rings for sealing, which may require the use of the original equipment manifold during installation.
Compatible Vehicles and Common Applications
- Replacement for Ford Focus A/C compressor failures
- Resolves issues with insufficient cooling or compressor clutch engagement
- Addresses refrigerant leaks due to worn or damaged compressor seals
- Fixes noisy or seized compressor units
- Restores proper air conditioning system pressure and performance
Installation Notes and Tips
Installation of the Four Seasons New Compressor 178399 requires attention to the following:
- Use the original equipment manifold for proper O-ring sealing as noted
- Ensure the serpentine belt is correctly routed over the 4-groove pulley
- Verify electrical connections match the pin-type terminal and single wire lead
- Check clutch clearance and alignment during installation
- Confirm compatibility with vehicle refrigerant type (R-134a or R1234yf)
Quality Assurance and Warranty
Four Seasons New Compressor 178399 is a new, direct replacement part manufactured to meet or exceed OEM standards. The compressor is oil-filled and includes all necessary sealing components except mounting hardware. While specific warranty details are not provided here, Four Seasons products typically come with a limited warranty covering defects in materials and workmanship. Always consult product documentation or the manufacturer for exact warranty terms.
| Brand | Four Seasons |
|---|---|
| Part Number | 178399 |
| Position | New Compressor |
| Clutch Included | Included |
| Clutch Maximum Diameter | 4.25 |
| Coil Clock Position | 1 Wire Lead |
| Coil Voltage | 12 |
| Compressor Type | 6SBH14C |
| Distance From Clutch To Mounting Flange | 1.59375 |
| ECV Harness Connector | Compressor SE10F, Vehicle SE10M |
| Mounting Hardware? | Not Included |
| Mounting Type | Tangent Mount |
| New or Reman | New |
| O-Ring A Number/Desc | [24257] |
| O-Ring B Number/Desc | [24642] |
| O-Ring C Number/Desc | [24243] |
| Oil Filled | Included |
| Printed Foot Note | May Require use of OE Manifold |
| Pulley Belt Type | Serpentine |
| Pulley Diameter MM | 107.95 |
| Pulley Groove Quantity | 4 |
| Pulley Lip Diameter | 4.25 |
| Pulley Ridge Diameter | 4.25 |
| Refrigerant Type | R-134a or R1234yf |
| Terminal Type | Pin |
| Type | Nippondenso |
This part fits 8 vehicles. Search below:
| Year | Make | Model | Submodel | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2018 | Ford | Focus | S | 2.0L | L4 | N/A | w/ 7SEU17C Compressor; New w/ Clutch; Replacement of Stretch Fit Belt is Required; Replacement of Stretch Fit Belt is Required; New Compressor |
| 2018 | Ford | Focus | SE | 2.0L | L4 | N/A | w/ 7SEU17C Compressor; New w/ Clutch; Replacement of Stretch Fit Belt is Required; Replacement of Stretch Fit Belt is Required; New Compressor |
| 2018 | Ford | Focus | SEL | 2.0L | L4 | N/A | w/ 7SEU17C Compressor; New w/ Clutch; Replacement of Stretch Fit Belt is Required; Replacement of Stretch Fit Belt is Required; New Compressor |
| 2018 | Ford | Focus | Titanium | 2.0L | L4 | N/A | w/ 7SEU17C Compressor; New w/ Clutch; Replacement of Stretch Fit Belt is Required; Replacement of Stretch Fit Belt is Required; New Compressor |
| 2017 | Ford | Focus | 2.0L | L4 | N/A | w/ 6SBH14C Compressor; New w/ Clutch; Replacement of Stretch Fit Belt is Required; Replacement of Stretch Fit Belt is Required; New Compressor | |
| 2016 | Ford | Focus | 2.0L | L4 | N/A | w/ 6SBH14C Compressor; New w/ Clutch; Replacement of Stretch Fit Belt is Required; Replacement of Stretch Fit Belt is Required; New Compressor | |
| 2015 | Ford | Focus | 2.0L | L4 | N/A | w/ 6SBH14C Compressor; New w/ Clutch; Replacement of Stretch Fit Belt is Required; Replacement of Stretch Fit Belt is Required; New Compressor | |
| 2014 | Ford | Focus | 2.0L | L4 | N/A | w/ 6SBH14C Compressor; New w/ Clutch; From 2/14; Replacement of Stretch Fit Belt is Required; Replacement of Stretch Fit Belt is Required; New Compressor |
* 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.