HomeHVAC > Hoses and PipesFour Seasons 66878 A/C Suction and Liquid Line Hose Assembly
Part #: 66878

Four Seasons 66878 A/C Suction and Liquid Line Hose Assembly

Hose Assembly
⚙️ 8 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Hose Assembly
🚗Fitment: Chevrolet, Caprice and SS
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Reliable A/C Suction and Liquid Line Hose Assembly for Chevrolet Caprice SS

The Four Seasons Hose Assembly part number 66878 is designed specifically for Chevrolet Caprice and Caprice SS models. This A/C suction and liquid line hose assembly ensures proper refrigerant flow and system pressure management for vehicles using R134-a refrigerant.

Key Features of Four Seasons Hose Assembly 66878

  • Constructed with durable aluminum and rubber materials for long-lasting performance
  • Equipped with P-nut fittings on both ends for secure connections
  • Compatible with high and low system pressure applications
  • Includes gasket and slim line sealing washers (O-Rings) for leak prevention
  • Features a service port with a 13 mm size for easy maintenance
  • Comes with a bracket and manifold for proper mounting and integration
  • Designed without an orifice tube and muffler for direct fit
  • OE replacement part ensuring compatibility and reliability

Detailed Description of Four Seasons Hose Assembly

The Four Seasons Hose Assembly 66878 is engineered to meet the specific HVAC hose and pipe requirements of Chevrolet Caprice and Caprice SS vehicles. This hose assembly combines aluminum and rubber materials to withstand the demands of both high and low pressure refrigerant flow within the A/C system. Featuring P-nut fittings on both suction and liquid line ends, it provides a secure and leak-resistant connection. The included slim line sealing washers (O-Rings) and gasket help maintain system integrity and prevent refrigerant leaks. Additionally, the assembly includes a service port for convenient system servicing and a bracket with manifold to ensure proper installation and stability.

About the Four Seasons Hose Assembly Product Line

The Four Seasons Hose Assembly product line focuses on delivering reliable and precise HVAC hose and pipe solutions for automotive air conditioning systems. This line is designed to provide direct OE replacement parts that maintain system efficiency and durability. The Hose Assembly line includes components like the 66878 part, which integrates essential fittings, seals, and mounting hardware to support proper refrigerant flow and system pressure management.

Common Applications and Issues Addressed

  • Replacement of worn or damaged A/C suction and liquid line hoses in Chevrolet Caprice and Caprice SS
  • Resolving refrigerant leaks caused by degraded seals or fittings
  • Restoring proper refrigerant flow and system pressure for efficient cooling
  • Addressing issues related to faulty or missing service ports for maintenance
  • Ensuring secure hose mounting with included bracket and manifold

Installation Notes and Tips

When installing the Four Seasons Hose Assembly 66878, ensure all O-rings and sealing washers are properly seated to prevent leaks. Verify that the P-nut fittings are tightened to manufacturer specifications. The included bracket and manifold should be securely mounted to maintain hose stability and prevent vibration damage. This assembly is designed for vehicles using R134-a refrigerant and is compatible with both high and low pressure sides of the A/C system.

Quality Assurance and Warranty

Four Seasons provides OE replacement quality with this Hose Assembly 66878, ensuring compatibility and durability for Chevrolet Caprice and Caprice SS models. The part includes all necessary seals and fittings to meet OEM standards. Warranty details are provided by Four Seasons and typically cover defects in materials and workmanship.

BrandFour Seasons
Part Number66878
PositionHose Assembly
MaterialAluminum / rubber
End 1 TypeP-nut fitting
End 2 TypeP-nut fitting
Refrigerant TypeR134-a
System PressureHigh pressure / low pressure
Gasket Or Seal IncludedIncluded
Switch Service PortW/o switch port
Fittings IncludedIncluded
Bracket?W/ bracket
DescriptionHose assemblies
Liquid Line StyleP-nut fitting
Manifold?W/ manifold
Muffler?W/o muffler
O-Ring A Number/Desc[24401] / slim line sealing washer
O-Ring A Quantity2
O-Ring B Number/Desc[24404] / slimline washer
O-Ring B Quantity1
O.E. Replacement?Yes
Orifice Tube?W/o orifice tube
Service Port Qty1
Service Port Type13 mm
Service Port?W/ service port
StyleHose assembly w/ ihx
Suction End SizeNo. 10
Suction End TypeP-nut fitting
Sve Port Low SideLow side
TypeSuction & liquid line

This part fits 8 vehicles. Search below:

YearMakeModelPositionNotes
2017ChevroletCapriceN/AHose Assembly
2016ChevroletCapriceN/AHose Assembly
2015ChevroletCapriceN/AHose Assembly
2015ChevroletSSN/AHose Assembly
2014ChevroletCapriceN/AHose Assembly
2014ChevroletSSN/AHose Assembly
2013ChevroletCapriceN/AHose Assembly
2012ChevroletCapriceN/AHose 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:

2117894813135572731668787951288009609226320392267968922854559245794992458351A83558HA111832C

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