HomeHVAC > Hoses and PipesFour Seasons 66865 A/C Discharge and Liquid Line
Part #: 66865

Four Seasons 66865 A/C Discharge and Liquid Line

Hose Assembly
⚙️ 4 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Hose Assembly
🚗Fitment: Fiat, 500L
🔄Easy Returns — Return within 60 days for a full refund
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Reliable A/C Discharge and Liquid Line for Fiat 500L

The Four Seasons Hose Assembly 66865 is designed specifically for the Fiat 500L, providing a durable and efficient solution for your vehicle's HVAC system. Engineered to handle high-pressure R134-a refrigerant, this hose assembly ensures optimal performance and system integrity.

  • Constructed from aluminum and rubber for durability and flexibility
  • Includes gasket and multiple O-rings for secure sealing
  • Equipped with a high-pressure R134-a quick disconnect service port
  • Features flange discharge end and male springlock suction end
  • Comes with a bracket and manifold for proper mounting and fit
  • Includes switch service port with M10x1.25 size for system monitoring
  • O-ring set includes green o-rings and slim line sealing washers for leak prevention

About the Four Seasons Hose Assembly Product Line

The Four Seasons Hose Assembly line focuses on providing complete hose solutions for automotive HVAC systems. This product line integrates essential components such as fittings, gaskets, and service ports to ensure compatibility and ease of installation. The 66865 hose assembly is part of this line, offering a factory-equivalent replacement designed to meet original equipment specifications for the Fiat 500L.

Detailed Product Description

This A/C discharge and liquid line hose assembly is built to withstand the high system pressures typical of modern automotive air conditioning systems using R134-a refrigerant. The combination of aluminum and rubber materials provides both strength and flexibility, reducing the risk of leaks or damage from vibration. The included gasket and multiple O-rings, including green o-rings and slim line sealing washers, ensure a tight seal at all connection points. The hose features a flange discharge end and a male springlock suction end, facilitating secure connections within the HVAC system. Additionally, the assembly includes a service port with a quick disconnect valve core and a switch service port sized M10x1.25, allowing for easy system diagnostics and maintenance.

Common Applications and Issues Addressed

  • Replacement of worn or leaking A/C discharge and liquid lines on Fiat 500L models
  • Restoring proper refrigerant flow and pressure in the HVAC system
  • Eliminating refrigerant leaks caused by damaged seals or fittings
  • Ensuring compatibility with R134-a refrigerant systems under high pressure
  • Facilitating accurate system monitoring through integrated switch service port

Installation Notes and Tips

When installing the Four Seasons Hose Assembly 66865 on a Fiat 500L, ensure all O-rings and gaskets are properly seated to prevent leaks. The included bracket and manifold should be securely mounted to maintain hose positioning and reduce stress on connections. Use the quick disconnect service port for efficient refrigerant handling during servicing. Verify that the switch service port is connected correctly to maintain system monitoring functions.

Quality Assurance and Warranty

This hose assembly is an original equipment replacement part, designed to meet or exceed factory specifications for the Fiat 500L. Four Seasons products undergo rigorous quality control to ensure durability and performance. While specific warranty details are not provided here, Four Seasons typically offers coverage against defects in materials and workmanship.

BrandFour Seasons
Part Number66865
PositionHose Assembly
MaterialAluminum / rubber
Refrigerant TypeR134-a
System PressureHigh pressure
Gasket Or Seal IncludedIncluded
Switch Service PortW/ switch port
Fittings IncludedIncluded
Bracket?W/ bracket
DescriptionHose assemblies
Discharge End TypeFlange
Manifold?W/ manifold
Muffler?W/o muffler
O-Ring A Number/Desc[24611] / green o-ring
O-Ring A Quantity1
O-Ring B Number/Desc[24401] / slim line sealing washer
O-Ring B Quantity1
O-Ring C Number/Desc[24402] / slimline washer
O-Ring C Quantity1
O-Ring D Number/Desc[24606] / green o-ring
O-Ring D Quantity1
O.E. Replacement?Yes
Service Port Cap High Side59988
Service Port Qty1
Service Port TypeR134-a quick disconnect
Service Port Valve Core High Side59335
Service Port?W/ service port
StyleHose assy /discharge, liquid
Suction End TypeMale springlock
Svc Port High SideHigh side
Switch Port Quantity1
Switch Port SizeM10x1.25

This part fits 4 vehicles. Search below:

YearMakeModelPositionNotes
2017Fiat500LN/AHose Assembly
2016Fiat500LN/AHose Assembly
2015Fiat500LN/AHose Assembly
2014Fiat500LN/AHose 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:

2117765727286686568201914AA797040800751A83545HA112092C

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