OE Quality
60-Day Returns

Four Seasons 85900 HVAC Heater Hose Assembly
Overview of Four Seasons Heater Hose Assembly 85900
The Four Seasons Heater Hose and Tube assembly 85900 is designed for reliable heater supply and return functions in select Chrysler, Dodge, and Volkswagen vehicles. This heater hose assembly is engineered to meet original equipment specifications, ensuring proper fit and function for models like the Grand Caravan, Routan, and Town & Country.
- Connector Type: O-ring for secure sealing
- Gasket Type: O-ring to prevent leaks
- Hose Diameter: 0.921875 inches (23.370 mm)
- Material: Durable plastic construction
- End B Type Opening: 0.922 inches
- Style: Heater supply and return hose assembly
- O.E. Replacement: Yes, designed to match original equipment
Detailed Product Description
The Four Seasons Heater Hose and Tube line includes this heater hose assembly (part number 85900), which is specifically designed to handle both heater supply and return functions. Constructed from durable plastic, this hose assembly features O-ring connectors and gaskets that provide a tight, leak-resistant seal. The hose diameter measures approximately 0.922 inches (23.370 mm), matching original equipment dimensions to ensure compatibility and performance. This part is an O.E. replacement, making it suitable for maintaining the heating system integrity in Chrysler Grand Caravan, Dodge Routan, and Volkswagen Town & Country models.
Applications and Common Issues Addressed
- Replacement of worn or cracked heater hoses causing coolant leaks
- Resolving heater core supply or return flow interruptions
- Fixing overheating issues related to faulty heater hose assemblies
- Preventing coolant loss and maintaining proper heating system pressure
- Restoring proper heater function in Chrysler, Dodge, and Volkswagen vehicles
Installation Notes and Tips
- Ensure the engine is cool before beginning installation to avoid burns
- Inspect O-ring connectors and gaskets for proper seating to prevent leaks
- Verify hose diameter and end fittings match vehicle specifications
- Use appropriate clamps and torque settings as recommended by the vehicle manufacturer
- Check for any signs of wear or damage on adjacent components during installation
Quality Assurance and Warranty
Four Seasons products, including the Heater Hose and Tube line, are manufactured to meet or exceed original equipment standards. The 85900 heater hose assembly undergoes rigorous quality control to ensure durability and reliable performance. This part is backed by Four Seasons' standard warranty coverage, providing confidence in its fitment and function for Chrysler Grand Caravan, Dodge Routan, and Volkswagen Town & Country vehicles.
| Brand | Four Seasons |
| Part Number | 85900 |
| Position | Heater Hose and Tube |
| Connector Type | O-Ring |
| Description | Heater Hose Assembly |
| End B Type | 0.922 |
| Gasket Type | O-Ring |
| Hose B Dia. IN | 0.921875 |
| Hose B Dia. MM | 23.370 |
| Hose C Dia. IN | 0.921875 |
| Hose C Dia. MM | 23.370 |
| Hose Dia. IN | 0.921875 |
| Hose Dia. MM | 23.370 |
| Material | Plastic |
| O.E. Replacement? | Yes |
| Opening IN | 0.922 |
| Style | Heater Suppy and Return |
| Type | Heater Supply and Return |
This part fits 6 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2010 | Volkswagen | Routan | N/A | Heater Hose and Tube |
| 2009 | Chrysler | Town & Country | N/A | Heater Hose and Tube |
| 2009 | Dodge | Grand Caravan | N/A | Heater Hose and Tube |
| 2009 | Volkswagen | Routan | N/A | Heater Hose and Tube |
| 2008 | Chrysler | Town & Country | N/A | Heater Hose and Tube |
| 2008 | Dodge | Grand Caravan | N/A | Heater Hose and Tube |
* 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.