HomeHVAC > Hoses and PipesFour Seasons 66400 A/C Refrigerant Suction Hose
Part #: 66400

Four Seasons 66400 A/C Refrigerant Suction Hose

Hose Assembly
⚙️ 10 vehicles fit this part
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Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Hose Assembly
🚗Fitment: Nissan, LEAF
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Reliable A/C Refrigerant Suction Hose for Nissan LEAF

The Four Seasons Hose Assembly 66400 is designed specifically for the Nissan LEAF to ensure efficient and reliable air conditioning system performance. This A/C refrigerant suction hose is engineered to meet OEM specifications, providing a durable and precise fit for your vehicle's low-pressure side.

Key Features of Four Seasons Hose Assembly 66400

  • Constructed from durable aluminum and rubber materials for long-lasting performance
  • Equipped with P-nut fittings on both suction ends for secure connections
  • Compatible with R134-a refrigerant systems
  • Includes gasket and fittings for proper sealing and installation
  • Features a 13 mm service port on the low-pressure side without a switch port
  • OEM replacement part designed specifically for Nissan LEAF models
  • Does not include bracket, muffler, or switch components
  • Comes with two green O-rings (part number 24684) for leak-free sealing

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 vehicles. This product line emphasizes compatibility and quality by offering assemblies that include necessary fittings and seals, ensuring a straightforward replacement process. The 66400 hose assembly is part of this line, delivering a reliable suction line solution for the Nissan LEAF's air conditioning system.

Detailed Product Description

The Four Seasons 66400 A/C refrigerant suction hose is engineered to handle low-pressure refrigerant flow within the Nissan LEAF's HVAC system. Made from a combination of aluminum and rubber, this hose assembly balances flexibility and durability to withstand typical operating conditions. The P-nut fittings on both ends provide a secure and leak-resistant connection, while the included gasket and fittings ensure proper sealing. The hose features a 13 mm service port on the low-pressure side, facilitating maintenance without the need for additional components like switches or mufflers. This part is an exact OEM replacement, designed to meet the specifications required for optimal air conditioning performance in Nissan LEAF vehicles.

Common Applications and Issues Addressed

  • Replacement of worn or damaged A/C refrigerant suction hoses in Nissan LEAF models
  • Resolving low refrigerant pressure issues caused by leaks or hose deterioration
  • Eliminating poor air conditioning performance due to faulty suction lines
  • Addressing refrigerant leaks at connection points with included gaskets and O-rings
  • Upgrading to OEM-quality components for reliable HVAC system operation

Installation Notes and Tips

When installing the Four Seasons Hose Assembly 66400, ensure all old seals and fittings are removed and the connection points are clean. Use the included green O-rings (part number 24684) to prevent refrigerant leaks. This hose assembly does not include a bracket or muffler, so verify existing mounting hardware is intact and secure. The P-nut fittings require proper torque to avoid damage or leaks. Since the hose includes a service port, it allows for convenient refrigerant charging and system diagnostics.

Quality Assurance and Warranty

Four Seasons products are manufactured to meet or exceed OEM standards, ensuring reliable performance and fitment. The 66400 hose assembly is an OEM replacement part designed specifically for Nissan LEAF vehicles. While specific warranty details are not provided here, Four Seasons typically offers coverage against defects in materials and workmanship. For exact warranty terms, consult the product packaging or manufacturer documentation.

BrandFour Seasons
Part Number66400
PositionHose Assembly
MaterialAluminum / rubber
End 1 TypeP-nut fitting
Refrigerant TypeR134-a
Component TypeSuction line
System PressureLow pressure
Gasket Or Seal IncludedIncluded
Switch Service PortW/o switch port
Fittings IncludedIncluded
Bracket?W/o bracket
DescriptionHose assemblies
Muffler?W/o muffler
O-Ring A Number/Desc[24684] / green o-ring
O-Ring A Quantity2
O.E. Replacement?Yes
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

This part fits 10 vehicles. Search below:

YearMakeModelSubmodelLitersCylindersFuel TypePositionNotes
2017NissanLEAFSL-L--ELECTRICN/AA/C Refrigerant Suction Hose fits multiple vehicle models.; Hose Assembly
2017NissanLEAFSV-L--ELECTRICN/AA/C Refrigerant Suction Hose fits multiple vehicle models.; Hose Assembly
2016NissanLEAFSL-L--ELECTRICN/AA/C Refrigerant Suction Hose fits multiple vehicle models.; Hose Assembly
2016NissanLEAFSV-L--ELECTRICN/AA/C Refrigerant Suction Hose fits multiple vehicle models.; Hose Assembly
2015NissanLEAFSL-L--ELECTRICN/AA/C Refrigerant Suction Hose fits multiple vehicle models.; Hose Assembly
2015NissanLEAFSV-L--ELECTRICN/AA/C Refrigerant Suction Hose fits multiple vehicle models.; Hose Assembly
2014NissanLEAFSL-L--ELECTRICN/ASuction Line; Excl. Japan Built; Hose Assembly
2014NissanLEAFSV-L--ELECTRICN/ASuction Line; Excl. Japan Built; Hose Assembly
2013NissanLEAFSL-L--ELECTRICN/ASuction Line; Excl. Japan Built; Hose Assembly
2013NissanLEAFSV-L--ELECTRICN/ASuction Line; Excl. Japan Built; 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:

21131166400785818924803NF0B924803NK0BA82913TP1479

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