HomeHVAC > Hoses and PipesFour Seasons 66978 A/C Suction and Liquid Line Hose Assembly
Part #: 66978

Four Seasons 66978 A/C Suction and Liquid Line Hose Assembly

Hose Assembly
⚙️ 5 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Hose Assembly
🚗Fitment: Jeep, Cherokee
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Four Seasons Hose Assembly 66978

The Four Seasons Hose Assembly 66978 is designed specifically for Jeep Cherokee models, providing reliable HVAC performance. This A/C suction and liquid line hose assembly is engineered with durable aluminum and rubber materials to ensure long-lasting service in your vehicle's air conditioning system.

  • Constructed from aluminum and rubber for durability and flexibility
  • Features a P-nut fitting on one end and a flange on the other for secure connections
  • Compatible with R134a and R1234yf refrigerants
  • Includes gasket or seal and service port for maintenance access
  • Equipped with fittings and a switch service port for system integration
  • Designed without a bracket and muffler
  • Style includes integrated heat exchanger (IHX) for improved efficiency

About the Four Seasons Hose Assembly Product Line

The Four Seasons Hose Assembly line focuses on providing complete hose assemblies tailored for HVAC systems in various vehicles. This product line emphasizes quality materials and precise fitment, ensuring that each hose assembly, including part number 66978, meets the specific requirements of the Jeep Cherokee's air conditioning system.

Detailed Product Description

The Four Seasons 66978 hose assembly combines aluminum and rubber components to balance strength and flexibility, essential for handling the pressures and temperatures within the A/C system. The P-nut fitting on one end and flange on the other provide secure, leak-resistant connections. This assembly supports both R134a and R1234yf refrigerants, making it compatible with modern and legacy air conditioning systems. Included gaskets and seals help maintain system integrity, while the integrated service port and switch service port facilitate diagnostics and maintenance. The hose assembly style with integrated heat exchanger (IHX) enhances system performance by improving heat transfer efficiency.

Common Applications and Issues Addressed

  • Replacement of worn or damaged A/C suction and liquid line hoses in Jeep Cherokee vehicles
  • Resolving refrigerant leaks caused by cracked or deteriorated hose materials
  • Improving A/C system efficiency with a properly sealed and fitted hose assembly
  • Facilitating maintenance and refrigerant charging through included service ports
  • Ensuring compatibility with both R134a and R1234yf refrigerants for system upgrades or repairs

Installation Notes and Tips

When installing the Four Seasons Hose Assembly 66978, ensure that all fittings are tightened to manufacturer specifications to prevent leaks. Verify that the included gasket or seal is properly seated before securing connections. The absence of a bracket means the hose assembly should be supported according to vehicle-specific guidelines to avoid undue stress. Use the service port for pressure testing and refrigerant charging as needed.

Quality Assurance and Warranty

Four Seasons products are manufactured to meet industry standards for HVAC components. The 66978 hose assembly undergoes quality checks to ensure durability and fitment accuracy for Jeep Cherokee models. Warranty details should be confirmed through official Four Seasons documentation or authorized distributors.

BrandFour Seasons
Part Number66978
PositionHose Assembly
MaterialAluminum / rubber
End 1 TypeP-nut fitting
End 2 TypeFlange
Refrigerant TypeR134a r1234yf
Gasket Or Seal IncludedIncluded
Switch Service PortYes
Fittings IncludedIncluded
Bracket?W/o bracket
DescriptionHose assemblies
Muffler?No
Service Port IncludedYes
StyleHose assembly w/ ihx
TypeSuction & liquid line

This part fits 5 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2023JeepCherokee2.4LL4N/Aw/ R134a; Hose Assembly
2022JeepCherokee2.4LL4N/Aw/ R134a; Hose Assembly
2021JeepCherokee2.4LL4N/Aw/ R134a; Hose Assembly
2020JeepCherokee2.4LL4N/Aw/ R134a; Hose Assembly
2019JeepCherokee2.4LL4N/Aw/ R134a; 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:

2118896697868288353AA68288353ABA83658HA114152C

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