HomeHVAC > Hoses and PipesFour Seasons 66278 A/C Refrigerant Suction Hose
Part #: 66278

Four Seasons 66278 A/C Refrigerant Suction Hose

Hose Assembly
⚙️ 3 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Hose Assembly
🚗Fitment: Kia, Rondo
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Overview of Four Seasons Hose Assembly 66278

The Four Seasons Hose Assembly 66278 is designed specifically for the Kia Rondo's HVAC system. This A/C refrigerant suction hose ensures reliable low-pressure refrigerant flow, maintaining optimal air conditioning performance in your vehicle.

  • Constructed from durable aluminum and rubber materials
  • Equipped with P-nut fittings on both ends for secure connections
  • Compatible with R134a refrigerant systems
  • Includes green O-rings and necessary gaskets for leak-free installation
  • Features a service port sized at 13 mm on the low-pressure side
  • OE replacement part ensuring proper fit and function

Detailed Product Description

This Four Seasons Hose Assembly belongs to the Hose Assembly product line, which focuses on delivering precise HVAC hose and pipe solutions for vehicle air conditioning systems. The 66278 part number represents a suction line hose assembly that connects the low-pressure side of the A/C system, facilitating refrigerant flow with minimal pressure loss. Made from a combination of aluminum and rubber, this hose assembly balances flexibility and durability to withstand typical operating conditions.

Both ends of the hose feature P-nut fittings, providing a secure and leak-resistant connection. The included green O-rings (part numbers 24109 and 24684) and gaskets ensure a tight seal, preventing refrigerant leaks. This assembly also includes a service port without a switch, allowing for easy system maintenance and refrigerant charging. The hose is designed without brackets or mufflers, focusing on straightforward installation and compatibility.

Compatible Vehicles and Applications

This A/C refrigerant suction hose assembly is compatible with Kia Rondo models that use R134a refrigerant. It serves as a direct OE replacement, making it suitable for repairs or HVAC system maintenance where the original suction line hose is damaged or worn.

  • Replaces worn or leaking suction line hoses in Kia Rondo A/C systems
  • Addresses low refrigerant pressure issues affecting cooling performance
  • Solves refrigerant leaks caused by damaged fittings or seals
  • Restores proper refrigerant flow for efficient air conditioning operation
  • Eliminates issues related to faulty or missing service ports

Installation Notes and Tips

When installing the Four Seasons Hose Assembly 66278, ensure all old O-rings and gaskets are removed and replaced with the included seals to prevent leaks. Tighten P-nut fittings to manufacturer torque specifications to avoid damage. The service port allows for easy refrigerant charging and system diagnostics. Since this hose assembly does not include brackets or mufflers, verify existing mounting points and supports are intact before installation.

Quality Assurance and Warranty

Four Seasons provides this hose assembly as an OE replacement part, meeting original equipment standards for fit, form, and function. The inclusion of all necessary fittings and seals supports a reliable installation. While specific warranty details are not provided here, Four Seasons products typically come with a limited warranty covering defects in materials and workmanship.

BrandFour Seasons
Part Number66278
PositionHose Assembly
Bracket?w/o Bracket
Component TypeSuction Line
DescriptionHose Assemblies
End 1 TypeP-Nut Fitting
End 2 TypeP-Nut Fitting
Fittings IncludedIncluded
Friction Material Attachmentw/o Switch Port
Gasket Or Seal IncludedIncluded
MaterialAluminum / Rubber
Muffler?w/o Muffler
O-Ring A Number/Desc[24109] / Green O-Ring
O-Ring B Number/Desc[24684] / Green O-Ring
O.E. Replacement?Yes
Refrigerant TypeR134a
Service Port Qty1
Service Port Size13 mm
Service Port?w/ Service Port
Suction End TypeP-Nut Fitting
Sve Port Low SideLow Side
Switch Included?Not Included
System PressureLow Pressure

This part fits 3 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2010KiaRondo2.7LV6N/AA/C Refrigerant Suction Hose fits multiple vehicle models.; Hose Assembly
2009KiaRondo2.7LV6N/ASuction Line; Hose Assembly
2008KiaRondo2.7LV6N/AFrom 5/2008; Hose Assembly

* 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:

21117666278785782800914977631D310A82778HA111899C

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