HomeHVAC > Hoses and PipesFour Seasons 86178 HVAC Heater Hose Connector
Part #: 86178

Four Seasons 86178 HVAC Heater Hose Connector

Coolant Coupling
9 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
Coolant Coupling
Fitment: Volkswagen, Beetle
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 Coolant Coupling 86178

The Four Seasons Coolant Coupling 86178 is designed specifically for Volkswagen Beetle models, providing a reliable connection within the engine coolant system. This black plastic HVAC heater hose connector ensures proper coolant flow and system integrity without including a thermostat.

  • Durable black plastic construction
  • Includes gasket or seal for secure fit
  • Two outlet ports for efficient coolant distribution
  • Compatible with Volkswagen Beetle coolant systems
  • Meets or exceeds OEM specifications
  • Inlet diameter of 0.750 inches
  • Maximum height of 3.00 inches

Product Line: Four Seasons Coolant Coupling

The Coolant Coupling line by Four Seasons focuses on engine coolant components designed to maintain proper fluid flow and system performance. This product line offers connectors and couplings that meet or exceed original equipment manufacturer standards, ensuring compatibility and durability for specific vehicle applications such as the Volkswagen Beetle.

Detailed Product Description

The Four Seasons Coolant Coupling 86178 is a plastic HVAC heater hose connector engineered for Volkswagen Beetle vehicles. It features a black finish and includes a gasket or seal to prevent leaks and maintain system pressure. With two outlet ports and an inlet diameter of 0.750 inches, this coupling facilitates efficient coolant flow through the engine’s heating system. The part does not include a thermostat or bleeder screw and has no mounting holes, simplifying installation in the designated coolant circuit. Its maximum height is 3.00 inches, making it compatible with the Beetle’s engine layout.

Common Applications and Issues Addressed

  • Replacement of worn or cracked heater hose connectors
  • Resolving coolant leaks in the HVAC heater hose system
  • Restoring proper coolant flow to prevent engine overheating
  • Maintaining system pressure with included gasket or seal
  • Ensuring compatibility with Volkswagen Beetle coolant components

Installation Notes and Tips

  • Verify compatibility with Volkswagen Beetle before installation
  • Ensure gasket or seal is properly seated to prevent leaks
  • Check hose connections for secure fit on both outlet ports
  • Do not attempt to install with thermostat or bleeder screw as they are not included
  • Inspect surrounding hoses and components for wear during replacement

Quality Assurance and Warranty

The Four Seasons Coolant Coupling 86178 meets or exceeds OEM standards for fit, form, and function, ensuring reliable performance in Volkswagen Beetle vehicles. The product includes a gasket or seal to maintain system integrity. Warranty details should be confirmed with the product documentation or supplier.

BrandFour Seasons
Part Number86178
PositionCoolant Coupling
Bleeder Screw IncludedNot Included
ColorBlack
DescriptionEngine Coolant Components
Gasket Or Seal IncludedIncluded
Inlet Dia. IN0.750
MaterialPlastic
Maximum Height3.00
Meets / Exceeds OEM?Yes
Mounting Hole Quantity0
Outlet Quantity2
Stylew/o Thermostat
Thermostat Included?Not Included
TypeCoolant Coupling

This part fits 9 vehicles. Search below:

YearMakeModelTransmissionLitersCylindersPositionNotes
2005VolkswagenBeetleManual1.9LL4N/AHVAC Heater Control Valve 2 Port; Coolant Coupling
2005VolkswagenBeetleAutomatic Dual Clutch1.9LL4N/AHVAC Heater Control Valve 2 Port; Coolant Coupling
2004VolkswagenBeetle1.9LL4N/AHVAC Heater Control Valve 2 Port; Coolant Coupling
2003VolkswagenBeetle1.9LL4N/AHVAC Heater Control Valve 2 Port; Coolant Coupling
2002VolkswagenBeetle1.9LL4N/AHVAC Heater Control Valve 2 Port; Coolant Coupling
2001VolkswagenBeetle1.9LL4N/AHVAC Heater Control Valve 2 Port; Coolant Coupling
2000VolkswagenBeetle1.9LL4N/AHVAC Heater Control Valve 2 Port; Coolant Coupling
1999VolkswagenBeetle1.9LL4N/AHVAC Heater Control Valve 2 Port; Coolant Coupling
1998VolkswagenBeetle1.9LL4N/AHVAC Heater Control Valve 2 Port; 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:

1C0122157K1C0122291A81600886178AC0122157KNHGW98708W98708

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