HomeHVAC > Hoses and PipesFour Seasons 66511 A/C Refrigerant Suction Hose
Part #: 66511

Four Seasons 66511 A/C Refrigerant Suction Hose

Hose Assembly
5 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
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OE Direct Replacement — Bolt-on fit, no modifications needed
Hose Assembly
Fitment: Kia and Hyundai, Optima and Sonata
Easy Returns — Return within 60 days for a full refund
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Overview of Four Seasons Hose Assembly 66511

The Four Seasons Hose Assembly 66511 is designed specifically for Hyundai Optima and Kia Sonata models, providing a reliable A/C refrigerant suction hose solution. Engineered with durable aluminum and rubber materials, this hose assembly ensures efficient low-pressure refrigerant flow for R134a systems.

  • Constructed from aluminum and rubber for durability and flexibility
  • Features a flange end and P-nut fitting for secure connections
  • Includes green O-rings [24622] and [24109] for proper sealing
  • Equipped with a 13 mm service port on the low-pressure side
  • OE replacement part compatible with Hyundai Optima and Kia Sonata
  • Comes with necessary fittings and gasket included
  • Part number 66511 for precise identification

Four Seasons Hose Assembly Product Line Details

The Four Seasons Hose Assembly product line focuses on delivering complete hose assemblies tailored for HVAC systems in various vehicle makes and models. This line emphasizes compatibility and quality by including all necessary fittings and seals, such as O-rings and gaskets, to ensure a proper fit and leak-free operation. The 66511 hose assembly is part of this line, designed to meet OEM specifications for suction line applications in Hyundai and Kia vehicles.

Detailed Product Description

This A/C refrigerant suction hose assembly is built to handle low-pressure refrigerant flow within the HVAC system of Hyundai Optima and Kia Sonata vehicles. The combination of aluminum and rubber materials provides both strength and flexibility, reducing the risk of leaks or damage under normal operating conditions. The hose features a flange on one end and a P-nut fitting on the other, ensuring secure attachment points. Included green O-rings and gasket help maintain a tight seal, preventing refrigerant loss. The integrated 13 mm service port allows for easy system servicing without removing the hose.

Common Applications and Issues Addressed

  • Replacement of worn or cracked A/C refrigerant suction hoses
  • Resolving refrigerant leaks in the low-pressure side of the HVAC system
  • Restoring proper refrigerant flow for efficient air conditioning performance
  • Fixing connection issues caused by damaged fittings or seals
  • Upgrading to an OE replacement hose assembly for Hyundai Optima and Kia Sonata

Installation Notes and Tips

When installing the Four Seasons Hose Assembly 66511, ensure all old O-rings and seals are removed and replaced with the included green O-rings to prevent leaks. Tighten the flange and P-nut fittings to manufacturer torque specifications to avoid damage. The service port allows for convenient refrigerant charging and system diagnostics without hose removal. This hose assembly does not include a bracket or muffler, so verify existing mounting points before installation.

Quality Assurance and Warranty

Four Seasons provides this hose assembly as an OE replacement part, meeting original equipment standards for fit and function. The inclusion of all necessary fittings and seals supports reliable, leak-free operation. While specific warranty details are not provided here, Four Seasons products typically come with a limited warranty covering defects in materials and workmanship.

BrandFour Seasons
Part Number66511
PositionHose Assembly
Bracket?w/o Bracket
Component TypeSuction Line
DescriptionHose Assemblies
End 1 TypeFlange
End 2 TypeP-Nut Fitting
Fittings IncludedIncluded
Friction Material Attachmentw/o Switch Port
Gasket Or Seal IncludedIncluded
MaterialAluminum / Rubber
Muffler?w/o Muffler
O-Ring A Number/Desc[24622] / Green O-Ring
O-Ring B Number/Desc[24109] / Green O-Ring
O.E. Replacement?Yes
Refrigerant TypeR134a
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 5 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
2013KiaOptima2.4LL4ELECTRIC/GASN/AA/C Refrigerant Suction Hose fits multiple vehicle models.; Hose Assembly
2012HyundaiSonata2.4LL4ELECTRIC/GASN/AA/C Refrigerant Suction Hose fits multiple vehicle models.; Hose Assembly
2012KiaOptima2.4LL4ELECTRIC/GASN/AA/C Refrigerant Suction Hose fits multiple vehicle models.; Hose Assembly
2011HyundaiSonata2.4LL4ELECTRIC/GASN/AA/C Refrigerant Suction Hose fits multiple vehicle models.; Hose Assembly
2011KiaOptima2.4LL4ELECTRIC/GASN/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:

21142266511785691977634R000A83029

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