HomeHVAC > Hoses and PipesFour Seasons 66444 A/C Refrigerant Discharge Hose
Part #: 66444

Four Seasons 66444 A/C Refrigerant Discharge Hose

Hose Assembly
12 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$48.97Free Shipping
Free ShippingNo Cost to Continental U.S.
Free Returns*Wrong fit? No cost
60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
Hose Assembly
Fitment: INFINITI and Nissan, QX60 and Pathfinder
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 66444

The Four Seasons Hose Assembly 66444 is designed specifically for high-pressure A/C refrigerant discharge applications. Engineered for use with R134a refrigerant, this hose assembly is compatible with select INFINITI and Nissan models, including the Pathfinder and QX60. It offers a reliable replacement option for your vehicle's HVAC system.

  • Constructed from durable aluminum and rubber materials
  • Designed for high-pressure A/C refrigerant discharge line use
  • Includes fittings and green O-rings (part number 24661) for secure sealing
  • Compatible with R134a refrigerant systems
  • OE replacement part ensuring proper fit and function
  • Features a P-nut fitting suction end for secure connection
  • Does not include a service port, switch, bracket, or muffler

Four Seasons Hose Assembly Product Line Details

The Four Seasons Hose Assembly product line focuses on providing reliable hose assemblies for automotive HVAC systems. These assemblies are designed to meet or exceed original equipment specifications, ensuring compatibility and durability. The 66444 part number is part of this line, offering a direct replacement discharge hose for high-pressure refrigerant flow in compatible vehicles.

Detailed Product Description

This A/C refrigerant discharge hose assembly combines aluminum and rubber materials to withstand the demands of high-pressure refrigerant flow. It is specifically designed for use with R134a refrigerant, common in many modern vehicles. The assembly includes necessary fittings and two green O-rings (part number 24661) to ensure a tight, leak-free seal. The hose features a P-nut fitting on the suction end, facilitating a secure and proper connection within the HVAC system. This part does not include a service port, switch, bracket, or muffler, aligning with original equipment design for the Nissan Pathfinder and INFINITI QX60 models.

Common Applications and Issues Addressed

  • Replacement of worn or damaged A/C refrigerant discharge hoses
  • Resolving refrigerant leaks caused by cracked or deteriorated hoses
  • Restoring proper high-pressure refrigerant flow in the HVAC system
  • Eliminating poor A/C performance due to faulty discharge lines
  • Maintaining system integrity with OE-quality fittings and seals

Installation Notes and Tips

  • Ensure system is fully depressurized before removal to avoid refrigerant release
  • Verify compatibility with INFINITI Pathfinder and Nissan QX60 models prior to installation
  • Use included green O-rings (part number 24661) to maintain proper sealing
  • Inspect fittings and connections for damage or wear during installation
  • Follow manufacturer torque specifications for P-nut fittings to prevent leaks

Quality Assurance and Warranty

The Four Seasons Hose Assembly 66444 is an OE replacement part designed to meet original equipment standards for fit, form, and function. It includes all necessary fittings and seals to ensure a secure installation. While specific warranty details are not provided, Four Seasons products typically adhere to industry quality standards to support reliable HVAC system performance.

BrandFour Seasons
Part Number66444
PositionHose Assembly
Bracket?w/o Bracket
Component TypeDischarge Line
DescriptionHose Assemblies
Fittings IncludedIncluded
Friction Material Attachmentw/o Switch Port
Gasket Or Seal IncludedIncluded
MaterialAluminum / Rubber
Muffler?w/o Muffler
O-Ring A Number/Desc[24661] / Green O-Ring
O.E. Replacement?Yes
Refrigerant TypeR134a
Service Port?w/o Service Port
Suction End TypeP-Nut Fitting
Switch Included?Not Included
System PressureHigh Pressure

This part fits 12 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2020INFINITIQX603.5LV6N/ADischarge Line; Hose Assembly
2020NissanPathfinderN/ADischarge Line; Hose Assembly
2019INFINITIQX603.5LV6N/ACompatible with various vehicles A/C refrigerant discharge hose; Hose Assembly
2019NissanPathfinderN/ACompatible with various vehicles A/C refrigerant discharge hose; Hose Assembly
2018INFINITIQX603.5LV6N/ACompatible with various vehicles A/C refrigerant discharge hose; Hose Assembly
2018NissanPathfinderN/ACompatible with various vehicles A/C refrigerant discharge hose; Hose Assembly
2017INFINITIQX603.5LV6N/ACompatible with various vehicles A/C refrigerant discharge hose; Hose Assembly
2017NissanPathfinderN/ACompatible with various vehicles A/C refrigerant discharge hose; Hose Assembly
2016INFINITIQX603.5LV6N/ACompatible with various vehicles A/C refrigerant discharge hose; Hose Assembly
2016NissanPathfinderN/ACompatible with various vehicles A/C refrigerant discharge hose; Hose Assembly
2015INFINITIQX603.5LV6N/ADischarge Line; From 9/2014; Hose Assembly
2015NissanPathfinderN/ADischarge Line; From 9/2014; 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:

211355481325666444787868924909NB0AA82957HA112732C

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