HomeHVAC > Hoses and PipesFour Seasons 66681 A/C Refrigerant Suction Hose
Part #: 66681

Four Seasons 66681 A/C Refrigerant Suction Hose

Hose Assembly
⚙️ 5 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: Mazda, CX-9
🔄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 66681

The Four Seasons Hose Assembly 66681 is designed specifically for the Mazda CX-9, providing a reliable A/C refrigerant suction hose solution. Constructed with durable aluminum and rubber materials, this hose assembly ensures efficient refrigerant flow and system performance.

  • Compatible with Mazda CX-9 models
  • Constructed from aluminum and rubber for durability
  • Equipped with P-nut fittings on both ends for secure connections
  • Designed for R134a refrigerant systems
  • Includes gasket and fittings for proper sealing
  • OE replacement part ensuring proper fit and function
  • Low-pressure suction line without service or switch ports

Detailed Product Description

This Four Seasons Hose Assembly 66681 belongs to the Hose Assembly product line, which focuses on providing high-quality hose and pipe components for automotive HVAC systems. The assembly features a suction line designed to handle low-pressure refrigerant flow within the air conditioning system. Both ends of the hose use P-nut fittings, facilitating straightforward installation and secure attachment to the vehicle's A/C components. The hose is compatible with R134a refrigerant, the standard for many modern vehicles including the Mazda CX-9.

Included with the hose assembly are two black O-rings (part number 24150) and necessary fittings, ensuring a tight seal and preventing refrigerant leaks. This part does not include a bracket, muffler, or service port, reflecting its specific role as a suction line within the system. As an OE replacement, it meets the original equipment specifications for fit and performance.

Common Applications and Issues Addressed

  • Replacement of worn or damaged A/C refrigerant suction hoses on Mazda CX-9
  • Resolving refrigerant leaks caused by cracked or deteriorated hoses
  • Restoring proper low-pressure refrigerant flow in the A/C system
  • Eliminating poor A/C performance due to faulty suction lines
  • Ensuring secure connections with included fittings and gaskets

Installation Notes and Tips

  • Ensure the vehicle is compatible: specifically Mazda CX-9 models
  • Use the included O-rings and fittings to prevent leaks
  • Verify that both P-nut fittings are properly tightened to manufacturer torque specifications
  • Inspect surrounding components for wear or damage during installation
  • Do not attempt to install if the hose or fittings appear damaged

Quality Assurance and Warranty

The Four Seasons Hose Assembly 66681 is manufactured to meet OE standards, ensuring reliable performance and fitment for the Mazda CX-9. The product includes all necessary seals and fittings to maintain system integrity. While specific warranty details are not provided, Four Seasons products typically adhere to industry quality controls and are backed by the brand's commitment to automotive HVAC component reliability.

BrandFour Seasons
Part Number66681
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/o Muffler
O-Ring A Number/Desc[24150] / Black O-Ring
O.E. Replacement?Yes
Refrigerant TypeR134a
Service Port?w/o Service Port
Suction End TypeP-Nut Fitting
Switch Included?Not Included
System PressureLow Pressure

This part fits 5 vehicles. Search below:

YearMakeModelPositionNotes
2015MazdaCX-9N/ASuction Line; Compressor End; Hose Assembly
2014MazdaCX-9N/ASuction Line; Compressor End; Hose Assembly
2013MazdaCX-9N/ASuction Line; Compressor End; Hose Assembly
2012MazdaCX-9N/ASuction Line; Compressor End; Hose Assembly
2011MazdaCX-9N/ASuction Line; Compressor End; From 12/10; 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:

21159266681785811800901A83199H7734HA111872CTD8461462A

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