HomeHVAC > Hoses and PipesFour Seasons 66913 A/C Refrigerant Discharge Hose
Part #: 66913

Four Seasons 66913 A/C Refrigerant Discharge Hose

Hose Assembly
⚙️ 10 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Hose Assembly
🚗Fitment: Audi, A4 and A4 Quattro
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Reliable A/C Refrigerant Discharge Hose for Audi A4 Models

The Four Seasons Hose Assembly 66913 is designed specifically for Audi A4 and A4 Quattro vehicles. This A/C refrigerant discharge hose ensures proper flow of R134a refrigerant, maintaining your vehicle's HVAC system efficiency.

  • Constructed from durable aluminum and rubber materials
  • Equipped with P-nut fittings on both ends for secure connections
  • Includes essential o-rings (24150 and 24661) for leak prevention
  • Compatible with R134a refrigerant type
  • Designed without brackets, mufflers, or service ports

About the Four Seasons Hose Assembly Product Line

The Four Seasons Hose Assembly line focuses on delivering reliable hose assemblies tailored for HVAC systems. This product line emphasizes quality materials and precise fitment to ensure optimal refrigerant flow and system integrity. The 66913 hose assembly is part of this line, engineered to meet the specific requirements of Audi A4 and A4 Quattro models.

Product Details and Specifications

This A/C refrigerant discharge hose features a combination of aluminum and rubber construction, providing both flexibility and durability under varying temperature and pressure conditions. Both ends of the hose are fitted with P-nut fittings, facilitating a secure and leak-resistant connection within the HVAC system. The hose is designed for use with R134a refrigerant, the standard for many modern vehicles. Included are two o-rings (part numbers 24150 and 24661) to ensure a tight seal and prevent refrigerant leaks. This assembly does not include a bracket, muffler, or service port, which simplifies installation in compatible Audi A4 models.

Common Applications and Issues Addressed

  • Replacement of worn or damaged A/C refrigerant discharge hoses
  • Resolving refrigerant leaks caused by deteriorated seals or fittings
  • Restoring proper refrigerant flow in Audi A4 and A4 Quattro HVAC systems
  • Eliminating A/C system inefficiencies due to hose degradation
  • Maintaining system pressure and preventing contamination

Installation Notes and Tips

When installing the Four Seasons Hose Assembly 66913, ensure that the P-nut fittings are properly tightened to manufacturer torque specifications to avoid leaks. Verify that the included o-rings are seated correctly to maintain a secure seal. Since this hose assembly does not include brackets or mufflers, confirm that the existing mounting points and supports in the vehicle are intact and secure. It is recommended to evacuate and recharge the A/C system with R134a refrigerant following installation to ensure optimal performance.

Quality Assurance and Warranty

Four Seasons products are manufactured to meet industry standards for durability and performance. The Hose Assembly 66913 undergoes quality checks to ensure compatibility and reliability in Audi A4 and A4 Quattro vehicles. Warranty information is provided by Four Seasons and should be referenced for specific coverage details.

BrandFour Seasons
Part Number66913
PositionHose Assembly
MaterialAluminum / rubber
End 1 TypeP-nut fitting
End 2 TypeP-nut fitting
Refrigerant TypeR134a
Gasket Or Seal IncludedIncluded
Switch Service PortNo
Bracket?W/o bracket
DescriptionHose assemblies
Muffler?W/o muffler
O-Ring A Number/Desc24150 / o-ring
O-Ring A Quantity1
O-Ring B Number/Desc24661 / o-ring
O-Ring B Quantity1
Service Port IncludedNo

This part fits 10 vehicles. Search below:

YearMakeModelBody TypeLitersCylindersPositionNotes
2009AudiA4Convertible2.0LL4N/ADischarge Line; Hose Assembly
2009AudiA4 QuattroConvertible2.0LL4N/ADischarge Line; Hose Assembly
2008AudiA42.0LL4N/ADischarge Line; Hose Assembly
2008AudiA4 Quattro2.0LL4N/ADischarge Line; Hose Assembly
2007AudiA42.0LL4N/ADischarge Line; Hose Assembly
2007AudiA4 Quattro2.0LL4N/ADischarge Line; Hose Assembly
2006AudiA42.0LL4N/ADischarge Line; Hose Assembly
2006AudiA4 Quattro2.0LL4N/ADischarge Line; Hose Assembly
2005AudiA42.0LL4N/ADischarge Line; Hose Assembly
2005AudiA4 Quattro2.0LL4N/ADischarge Line; 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:

2118242402716509669138E0260701BP8E0260701BSH7728HA113960C

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