HomeHVAC > Hoses and PipesFour Seasons 86154 HVAC Heater Hose Connector
Part #: 86154

Four Seasons 86154 HVAC Heater Hose Connector

Coolant Coupling
⚙️ 34 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Coolant Coupling
🚗Fitment: Audi and Volkswagen, A3, A3 Quattro, Golf, GTI, Jetta, and TT Quattro
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Reliable Coolant Coupling for Audi and Volkswagen Vehicles

The Four Seasons Coolant Coupling 86154 is designed to provide a secure and durable connection within your vehicle's engine coolant system. Engineered for select Audi and Volkswagen models, this plastic HVAC heater hose connector ensures proper coolant flow and system integrity.

  • Constructed from durable plastic material for corrosion resistance
  • Includes gasket or seal for leak-free installation
  • Maximum height of 2.354 inches for precise fitment
  • Inlet diameter of 0.78 inches to match OEM specifications
  • Meets or exceeds OEM standards for quality and performance
  • Style without thermostat; thermostat not included
  • Compatible with Audi A3, A3 Quattro, Volkswagen Golf, GTI, Jetta, and TT Quattro

About the Four Seasons Coolant Coupling Product Line

The Coolant Coupling line by Four Seasons focuses on engine coolant components designed to maintain efficient heat transfer and system reliability. This product line emphasizes compatibility with original equipment manufacturer (OEM) specifications, ensuring that each coupling integrates seamlessly with your vehicle's HVAC and cooling systems. The 86154 part is a key component within this line, engineered to support proper coolant circulation without including a thermostat.

Detailed Product Description

The Four Seasons 86154 coolant coupling is a plastic HVAC heater hose connector specifically designed for engine coolant systems in select Audi and Volkswagen models. Its 0.78-inch inlet diameter and 2.354-inch maximum height provide a precise fit, ensuring secure connections and preventing leaks. The included gasket or seal enhances the integrity of the connection, reducing the risk of coolant loss. This coupling meets or exceeds OEM standards, making it a reliable replacement part for vehicles such as the Audi A3, A3 Quattro, Volkswagen Golf, GTI, Jetta, and TT Quattro. Note that this style does not include a thermostat.

Common Applications and Issues Addressed

  • Replacement of worn or cracked coolant couplings in Audi and Volkswagen models
  • Resolving coolant leaks caused by damaged or degraded hose connectors
  • Maintaining proper coolant flow within the HVAC heater hose system
  • Preventing overheating issues related to faulty coolant connections
  • Ensuring system integrity after engine repairs or coolant system maintenance

Installation Notes and Tips

When installing the Four Seasons 86154 coolant coupling, ensure the gasket or seal is properly seated to prevent leaks. Verify the inlet diameter and maximum height match your vehicle’s specifications for a secure fit. This part is designed for use without a thermostat, so confirm your vehicle’s system requirements before installation. Properly tighten hose clamps to avoid coolant seepage and check for leaks after installation.

Quality Assurance and Warranty

Four Seasons coolant couplings are manufactured to meet or exceed OEM standards, providing dependable performance and durability. The 86154 part undergoes rigorous quality control to ensure compatibility and reliability in Audi and Volkswagen vehicles. Warranty information is available through Four Seasons and typically covers defects in material and workmanship.

BrandFour Seasons
Part Number86154
PositionCoolant Coupling
MaterialPlastic
Maximum Height2.354
Gasket Or Seal IncludedIncluded
DescriptionEngine coolant components
Inlet Dia. IN0.78
Meets / Exceeds OEM?Yes
StyleW/o thermostat
Thermostat Included?Not included
TypeCoolant coupling

This part fits 34 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2012AudiA32.0LL4N/Aw/ Quick Disconnect; Coolant Coupling
2012AudiA3 QuattroN/Aw/ Quick Disconnect; Coolant Coupling
2011AudiA32.0LL4N/Aw/ Quick Disconnect; Coolant Coupling
2011AudiA3 QuattroN/Aw/ Quick Disconnect; Coolant Coupling
2010AudiA32.0LL4N/Aw/ Quick Disconnect; Coolant Coupling
2010AudiA3 QuattroN/Aw/ Quick Disconnect; Coolant Coupling
2009AudiA32.0LL4N/Aw/ Quick Disconnect; Coolant Coupling
2009AudiA3 Quattro2.0LL4N/Aw/ Quick Disconnect; Coolant Coupling
2008AudiA32.0LL4N/Aw/ Quick Disconnect; Coolant Coupling
2008AudiA3 Quattro2.0LL4N/Aw/ Quick Disconnect; Coolant Coupling
2007AudiA3N/Aw/ Quick Disconnect; Coolant Coupling
2007AudiA3 Quattro2.0LL4N/Aw/ Quick Disconnect; Coolant Coupling
2006AudiA3N/Aw/ Quick Disconnect; Coolant Coupling
2006AudiA3 Quattro2.0LL4N/Aw/ Quick Disconnect; Coolant Coupling
2006AudiTT Quattro3.2LV6N/ACoolant Coupling; Coolant Coupling
2006VolkswagenGolf1.8LL4N/AStraight; Coolant Coupling
2006VolkswagenGTIN/AStraight; Coolant Coupling
2006VolkswagenJetta2.0LL4N/AStraight Hose Connection; Coolant Coupling
2005AudiTT Quattro3.2LV6N/ACoolant Coupling; Coolant Coupling
2005VolkswagenGolf2.0LL4N/AStraight; Coolant Coupling
2005VolkswagenJetta2.0LL4N/AStraight Hose Connection; Coolant Coupling
2004AudiTT Quattro3.2LV6N/ACoolant Coupling; Coolant Coupling
2004VolkswagenGolfN/AStraight; Coolant Coupling
2004VolkswagenJetta2.0LL4N/AStraight; Coolant Coupling
2003VolkswagenGolf2.0LL4N/AStraight; Coolant Coupling
2003VolkswagenJetta2.0LL4N/AStraight; Coolant Coupling
2002VolkswagenGolfN/AStraight; Coolant Coupling
2002VolkswagenJetta1.9LL4N/AStraight; Coolant Coupling
2001VolkswagenGolfN/AStraight; Coolant Coupling
2001VolkswagenJetta2.0LL4N/AStraight; Coolant Coupling
2000VolkswagenGolfN/AStraight; Coolant Coupling
2000VolkswagenJetta1.8LL4N/AStraight; Coolant Coupling
1999VolkswagenGolf2.0LL4N/AStraight; Coolant Coupling
1999VolkswagenJetta2.0LL4N/AStraight; Coolant Coupling

* 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:

14700623B0122291B62700281598486154KGT122NW98684

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