HomeHVAC > Hoses and PipesFour Seasons 66402 A/C Refrigerant Suction Hose
Part #: 66402

Four Seasons 66402 A/C Refrigerant Suction Hose

Hose Assembly
⚙️ 6 vehicles fit this part
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Select your vehicle to confirm fitment
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✅ 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: Nissan, Altima
🔄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 66402

The Four Seasons Hose Assembly 66402 is designed specifically for Nissan Altima models requiring a reliable A/C refrigerant suction hose. Constructed with durable aluminum and rubber materials, this hose assembly ensures efficient low-pressure refrigerant flow within the vehicle's HVAC system.

  • Material: Aluminum and rubber for durability and flexibility
  • End fittings: P-nut fittings on both ends for secure connections
  • Refrigerant compatibility: Designed for R134-a refrigerant systems
  • Includes gasket, fittings, and green O-rings (part number 24684)
  • Equipped with a muffler and a 13 mm service port on the low-pressure side
  • OE replacement part, compatible with Nissan Altima

Detailed Product Description

This Four Seasons Hose Assembly 66402 belongs to the Hose Assembly product line, which focuses on providing complete hose solutions for automotive HVAC systems. The assembly combines aluminum tubing with rubber sections to balance strength and flexibility, reducing the risk of leaks or damage under typical operating conditions. Both ends feature P-nut fittings, ensuring a tight, leak-resistant seal when connected to the vehicle's A/C system. The included green O-rings and gasket help maintain system integrity, while the integrated muffler reduces noise during refrigerant flow. This hose assembly is designed for use with R134-a refrigerant and operates on the low-pressure side of the system, making it suitable for the suction line in Nissan Altima models.

Common Applications and Issues Addressed

  • Replacement of worn or damaged A/C refrigerant suction hoses in Nissan Altima vehicles
  • Resolving refrigerant leaks caused by cracked or deteriorated hoses
  • Eliminating low-pressure side noise with the built-in muffler
  • Ensuring proper refrigerant flow and pressure for efficient A/C performance
  • Maintaining system integrity with included gaskets and O-rings

Installation Notes and Tips

  • Verify compatibility with Nissan Altima model year before installation
  • Ensure all fittings and O-rings are properly seated to prevent leaks
  • Use appropriate tools to tighten P-nut fittings without over-torquing
  • Check the service port for accessibility during A/C system servicing
  • Inspect the hose assembly for any damage before installation

Quality Assurance and Warranty

The Four Seasons Hose Assembly 66402 is an OE replacement part, meeting original equipment specifications for fit and function. It includes all necessary fittings, gaskets, and seals to ensure a proper installation. While specific warranty details are not provided, Four Seasons products typically adhere to industry standards for quality and reliability, supporting long-term performance in Nissan Altima HVAC systems.

BrandFour Seasons
Part Number66402
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/ Muffler
O-Ring A Number/Desc[24684] / Green O-Ring
O.E. Replacement?Yes
Refrigerant TypeR134-A
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 6 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2018NissanAltima2.5LL4N/AA/C Refrigerant Suction Hose fits multiple vehicle models.; Hose Assembly
2017NissanAltima2.5LL4N/AA/C Refrigerant Suction Hose fits multiple vehicle models.; Hose Assembly
2016NissanAltima2.5LL4N/AA/C Refrigerant Suction Hose fits multiple vehicle models.; Hose Assembly
2015NissanAltima2.5LL4N/AA/C Refrigerant Suction Hose fits multiple vehicle models.; Hose Assembly
2014NissanAltima2.5LL4N/AA/C Refrigerant Suction Hose fits multiple vehicle models.; Hose Assembly
2013NissanAltima2.5LL4N/AA/C Refrigerant Suction Hose fits multiple vehicle models.; 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:

21131366402784849924803TA0A924809HS0AA82915HA112727C

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