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Four Seasons 86154 HVAC Heater Hose Connector
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.
| Brand | Four Seasons |
| Part Number | 86154 |
| Position | Coolant Coupling |
| Material | Plastic |
| Maximum Height | 2.354 |
| Gasket Or Seal Included | Included |
| Description | Engine coolant components |
| Inlet Dia. IN | 0.78 |
| Meets / Exceeds OEM? | Yes |
| Style | W/o thermostat |
| Thermostat Included? | Not included |
| Type | Coolant coupling |
This part fits 34 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2012 | Audi | A3 | 2.0L | L4 | N/A | w/ Quick Disconnect; Coolant Coupling |
| 2012 | Audi | A3 Quattro | N/A | w/ Quick Disconnect; Coolant Coupling | ||
| 2011 | Audi | A3 | 2.0L | L4 | N/A | w/ Quick Disconnect; Coolant Coupling |
| 2011 | Audi | A3 Quattro | N/A | w/ Quick Disconnect; Coolant Coupling | ||
| 2010 | Audi | A3 | 2.0L | L4 | N/A | w/ Quick Disconnect; Coolant Coupling |
| 2010 | Audi | A3 Quattro | N/A | w/ Quick Disconnect; Coolant Coupling | ||
| 2009 | Audi | A3 | 2.0L | L4 | N/A | w/ Quick Disconnect; Coolant Coupling |
| 2009 | Audi | A3 Quattro | 2.0L | L4 | N/A | w/ Quick Disconnect; Coolant Coupling |
| 2008 | Audi | A3 | 2.0L | L4 | N/A | w/ Quick Disconnect; Coolant Coupling |
| 2008 | Audi | A3 Quattro | 2.0L | L4 | N/A | w/ Quick Disconnect; Coolant Coupling |
| 2007 | Audi | A3 | N/A | w/ Quick Disconnect; Coolant Coupling | ||
| 2007 | Audi | A3 Quattro | 2.0L | L4 | N/A | w/ Quick Disconnect; Coolant Coupling |
| 2006 | Audi | A3 | N/A | w/ Quick Disconnect; Coolant Coupling | ||
| 2006 | Audi | A3 Quattro | 2.0L | L4 | N/A | w/ Quick Disconnect; Coolant Coupling |
| 2006 | Audi | TT Quattro | 3.2L | V6 | N/A | Coolant Coupling; Coolant Coupling |
| 2006 | Volkswagen | Golf | 1.8L | L4 | N/A | Straight; Coolant Coupling |
| 2006 | Volkswagen | GTI | N/A | Straight; Coolant Coupling | ||
| 2006 | Volkswagen | Jetta | 2.0L | L4 | N/A | Straight Hose Connection; Coolant Coupling |
| 2005 | Audi | TT Quattro | 3.2L | V6 | N/A | Coolant Coupling; Coolant Coupling |
| 2005 | Volkswagen | Golf | 2.0L | L4 | N/A | Straight; Coolant Coupling |
| 2005 | Volkswagen | Jetta | 2.0L | L4 | N/A | Straight Hose Connection; Coolant Coupling |
| 2004 | Audi | TT Quattro | 3.2L | V6 | N/A | Coolant Coupling; Coolant Coupling |
| 2004 | Volkswagen | Golf | N/A | Straight; Coolant Coupling | ||
| 2004 | Volkswagen | Jetta | 2.0L | L4 | N/A | Straight; Coolant Coupling |
| 2003 | Volkswagen | Golf | 2.0L | L4 | N/A | Straight; Coolant Coupling |
| 2003 | Volkswagen | Jetta | 2.0L | L4 | N/A | Straight; Coolant Coupling |
| 2002 | Volkswagen | Golf | N/A | Straight; Coolant Coupling | ||
| 2002 | Volkswagen | Jetta | 1.9L | L4 | N/A | Straight; Coolant Coupling |
| 2001 | Volkswagen | Golf | N/A | Straight; Coolant Coupling | ||
| 2001 | Volkswagen | Jetta | 2.0L | L4 | N/A | Straight; Coolant Coupling |
| 2000 | Volkswagen | Golf | N/A | Straight; Coolant Coupling | ||
| 2000 | Volkswagen | Jetta | 1.8L | L4 | N/A | Straight; Coolant Coupling |
| 1999 | Volkswagen | Golf | 2.0L | L4 | N/A | Straight; Coolant Coupling |
| 1999 | Volkswagen | Jetta | 2.0L | L4 | N/A | Straight; 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:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.