HomeHVAC > Hoses and PipesFour Seasons 66016 A/C Refrigerant Suction Hose
Part #: 66016

Four Seasons 66016 A/C Refrigerant Suction Hose

Hose Assembly
⚙️ 30 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Hose Assembly
🚗Fitment: Chevrolet, GMC, and Cadillac, Suburban, Tahoe, Yukon, Yukon XL, Escalade, and Escalade ESV
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Overview of Four Seasons Hose Assembly 66016

The Four Seasons Hose Assembly 66016 is designed specifically for low-pressure A/C refrigerant suction line applications. Engineered with durable aluminum and rubber materials, this hose assembly is compatible with select Cadillac, Chevrolet, and GMC models, including Escalade, Escalade ESV, Tahoe, Yukon, and Yukon XL. It ensures reliable refrigerant flow and system performance for vehicles using R134-a refrigerant.

  • Constructed from aluminum and rubber for durability and flexibility
  • Features P-nut fitting on suction end and sealing washer on the opposite end
  • Includes gasket, fittings, and slimline O-rings for secure connections
  • Equipped with a muffler to reduce noise and vibration
  • Designed for low-pressure refrigerant suction line with R134-a refrigerant compatibility
  • Includes a 13 mm R134-a quick disconnect service port for easy maintenance
  • OE replacement part ensuring proper fit and function

Four Seasons Hose Assembly Product Line

The Four Seasons Hose Assembly product line focuses on providing reliable and precise hose assemblies for automotive HVAC systems. This line includes components engineered to meet original equipment specifications, ensuring compatibility and performance. The 66016 hose assembly is part of this line, offering a complete solution with included fittings, gaskets, and service ports to facilitate installation and service on compatible vehicles.

Detailed Product Description

The Four Seasons 66016 A/C refrigerant suction hose is designed to handle low-pressure refrigerant flow within the HVAC system. Its aluminum and rubber construction balances strength and flexibility, reducing the risk of leaks or damage under normal operating conditions. The hose assembly includes a P-nut fitting on the suction end and a sealing washer on the other, providing secure connections to the vehicle’s A/C components. The included muffler helps minimize noise and vibration during operation. Additionally, the hose features a 13 mm R134-a quick disconnect service port, allowing for efficient system servicing without the need for extensive disassembly. This hose assembly is an OE replacement part, ensuring it meets the fit and function requirements for Cadillac Escalade, Escalade ESV, Chevrolet Tahoe, and GMC Yukon and Yukon XL models.

Common Applications and Issues Addressed

  • Replacement of worn or damaged A/C refrigerant suction hoses
  • Resolving refrigerant leaks caused by cracked or deteriorated hoses
  • Restoring proper low-pressure refrigerant flow in the HVAC system
  • Reducing noise and vibration from the suction line with integrated muffler
  • Facilitating maintenance with included service port and fittings

Installation Notes and Tips

  • Ensure vehicle compatibility with Cadillac Escalade, Escalade ESV, Chevrolet Tahoe, GMC Yukon, or Yukon XL before installation
  • Use included slimline O-rings and gasket to maintain proper sealing and prevent leaks
  • Check that the P-nut fitting and sealing washer are securely tightened to manufacturer torque specifications
  • Inspect the service port for accessibility to simplify future A/C system servicing
  • Handle the hose assembly carefully to avoid kinks or damage during installation

Quality Assurance and Warranty

Four Seasons Hose Assembly 66016 is manufactured to meet or exceed original equipment standards, ensuring reliable performance and durability. The part includes all necessary fittings and seals for a complete installation. While specific warranty details may vary, Four Seasons products typically come with a limited warranty covering defects in materials and workmanship. Verify warranty terms with the product documentation or supplier.

BrandFour Seasons
Part Number66016
PositionHose Assembly
Bracket?w/o Bracket
Component TypeSuction Line
DescriptionHose Assemblies
End 1 TypeP-Nut Fitting
End 2 TypeSealing Washer
Fittings IncludedIncluded
Friction Material Attachmentw/o Switch Port
Gasket Or Seal IncludedIncluded
MaterialAluminum / Rubber
Muffler?w/ Muffler
O-Ring A Number/Desc[24404] / Slimline Washer
O.E. Replacement?Yes
Refrigerant TypeR134-A
Service Port Qty1
Service Port Size13 mm
Service Port TypeR134-A Quick Disconnect
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 30 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2020CadillacEscaladeN/Aw/ R134a; Hose Assembly
2020CadillacEscalade ESVN/Aw/ R134a; Hose Assembly
2020ChevroletTahoeN/ASuction Line for A/C Refrigerant with R134a, Rear AC, and 1 Muffler; Hose Assembly
2020GMCYukonN/ASuction Line for A/C Refrigerant with R134a, Rear AC, and 1 Muffler; Hose Assembly
2020GMCYukon XLN/ASuction Line for A/C Refrigerant with R134a, Rear AC, and 1 Muffler; Hose Assembly
2019CadillacEscaladeN/Aw/ R134a; Hose Assembly
2019CadillacEscalade ESVN/Aw/ R134a; Hose Assembly
2019ChevroletTahoeN/ASuction Line for A/C Refrigerant with R134a, Rear AC, and 1 Muffler; Hose Assembly
2019GMCYukonN/ASuction Line for A/C Refrigerant with R134a, Rear AC, and 1 Muffler; Hose Assembly
2019GMCYukon XLN/ASuction Line for A/C Refrigerant with R134a, Rear AC, and 1 Muffler; Hose Assembly
2018CadillacEscaladeN/ASuction Line for A/C Refrigerant with R134a, Rear AC, and 1 Muffler; Hose Assembly
2018CadillacEscalade ESVN/ASuction Line for A/C Refrigerant with R134a, Rear AC, and 1 Muffler; Hose Assembly
2018ChevroletTahoeN/ASuction Line for A/C Refrigerant with R134a, Rear AC, and 1 Muffler; Hose Assembly
2018GMCYukonN/ASuction Line for A/C Refrigerant with R134a, Rear AC, and 1 Muffler; Hose Assembly
2018GMCYukon XLN/ASuction Line for A/C Refrigerant with R134a, Rear AC, and 1 Muffler; Hose Assembly
2017CadillacEscaladeN/ASuction Line for A/C Refrigerant with R134a, Rear AC, and 1 Muffler; Hose Assembly
2017CadillacEscalade ESVN/ASuction Line for A/C Refrigerant with R134a, Rear AC, and 1 Muffler; Hose Assembly
2017ChevroletTahoeN/ASuction Line for A/C Refrigerant with R134a, Rear AC, and 1 Muffler; Hose Assembly
2017GMCYukon5.3LV8N/ASuction Line for A/C Refrigerant with R134a, Rear AC, and 1 Muffler; Hose Assembly
2017GMCYukon XL5.3LV8N/ASuction Line for A/C Refrigerant with R134a, Rear AC, and 1 Muffler; Hose Assembly
2016CadillacEscaladeN/ASuction Line for A/C Refrigerant with R134a, Rear AC, and 1 Muffler; Hose Assembly
2016CadillacEscalade ESVN/ASuction Line for A/C Refrigerant with R134a, Rear AC, and 1 Muffler; Hose Assembly
2016ChevroletTahoeN/ASuction Line for A/C Refrigerant with R134a, Rear AC, and 1 Muffler; Hose Assembly
2016GMCYukon5.3LV8N/ASuction Line for A/C Refrigerant with R134a, Rear AC, and 1 Muffler; Hose Assembly
2016GMCYukon XL5.3LV8N/ASuction Line for A/C Refrigerant with R134a, Rear AC, and 1 Muffler; Hose Assembly
2015CadillacEscaladeN/ASuction Line for A/C Refrigerant with R134a, Rear AC, and 1 Muffler; Hose Assembly
2015CadillacEscalade ESVN/ASuction Line for A/C Refrigerant with R134a, Rear AC, and 1 Muffler; Hose Assembly
2015ChevroletTahoeN/ASuction Line for A/C Refrigerant with R134a, Rear AC, and 1 Muffler; Hose Assembly
2015GMCYukonN/ASuction Line for A/C Refrigerant with R134a, Rear AC, and 1 Muffler; Hose Assembly
2015GMCYukon XLN/ASuction Line for A/C Refrigerant with R134a, Rear AC, and 1 Muffler; 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:

153478823302582233721702824156601678560384459867A82455HA112811CT66016

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