OE Quality
60-Day Returns

Gates 19806 HVAC Heater Hose - Auxiliary Water Pump To Pipe-1, Heater To Valve or Thermostat To Reservoir
Reliable HVAC Heater Hose for Select Buick, Chevrolet, and Ford Models
The Gates Molded Heater Hose 19806 is engineered to provide dependable heating system performance for a range of vehicles including Buick, Chevrolet, Ford, GMC, and more. Designed with durable EPDM material and precise molded construction, this heater hose ensures a secure fit and long-lasting service in your vehicle's HVAC system.
- Constructed from high-quality EPDM material for heat and chemical resistance
- Molded design for exact fit and easy installation
- Centerline length of 10.51 inches (267 mm) for accurate replacement
- Consistent inside diameter of 0.75 inches (19 mm) on both ends
- Compatible with multiple makes and models including Buick 9-3, Chevrolet Trailblazer, and Ford Thunderbird
About the Gates Molded Heater Hose Product Line
The Molded Heater Hose line by Gates focuses on precision-engineered hoses designed to meet or exceed OEM specifications. These hoses feature molded shapes that match original equipment contours, reducing the need for modifications during installation. The 19806 part number is part of this line, offering a reliable replacement option for HVAC heater hoses in various vehicle applications.
Detailed Product Description
This HVAC heater hose is made from EPDM, a synthetic rubber known for its excellent resistance to heat, ozone, and automotive fluids. The molded construction ensures the hose maintains its shape and fits securely between heater core and engine connections. With a centerline length of 10.51 inches (267 mm) and an inside diameter of 0.75 inches (19 mm) on both ends, the Gates 19806 heater hose provides a precise fit for vehicles such as the Buick 9-3X, Chevrolet Envoy XL, and Ford Thunderbird. The hose does not include quick connect fittings or branches, simplifying the replacement process.
Common Applications and Issues Addressed
- Replacement of cracked or leaking heater hoses in Buick, Chevrolet, Ford, and other compatible vehicles
- Restoring proper coolant flow to the HVAC heater core
- Preventing coolant leaks that can cause engine overheating or interior heating failure
- Addressing hose deterioration due to age, heat, or chemical exposure
- Ensuring a secure, OEM-style fit to maintain system integrity
Installation Notes and Tips
Before installation, verify the part number 19806 matches your vehicle’s required heater hose specifications. The molded design allows for straightforward replacement without the need for hose modifications. Ensure all clamps and connections are secure to prevent leaks. It is recommended to inspect surrounding hoses and components for wear during replacement to maintain overall HVAC system reliability.
Quality Assurance and Warranty
Gates Molded Heater Hose 19806 is manufactured to meet stringent quality standards, ensuring durability and performance in demanding automotive environments. The EPDM material and molded construction contribute to long service life. Warranty details should be confirmed with the original equipment manufacturer or supplier, as they may vary by application and region.
| Brand | Gates |
| Part Number | 19806 |
| Position | Molded Heater Hose, Heater To Valve, Auxiliary Water Pump To Pipe-1, and Thermostat To Reservoir |
| Material | Epdm |
| End 1 Inside Diameter | .75 |
| End 1 Inside Diameter | 19 |
| End 2 Inside Diameter | .75 |
| End 2 Inside Diameter | 19 |
| Centerline Length | 10.51 |
| Centerline Length | 267 |
| Branch Quantity | 0 |
| 9839 | Yes |
| 9845 | 0 |
| Centerline Length (in) | 10.51 |
| Centerline Length (mm) | 267 |
| Molded | Yes |
| Number of Quick Connect Fittings | 0 |
This part fits 44 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2011 | Saab | 9-3 | 2.0L | L4 | GAS | Thermostat To Reservoir | Molded Heater Hose |
| 2011 | Saab | 9-3X | 2.0L | L4 | GAS | Thermostat To Reservoir | Molded Heater Hose |
| 2010 | Saab | 9-3 | 2.0L | L4 | GAS | Thermostat To Reservoir | Molded Heater Hose |
| 2010 | Saab | 9-3X | 2.0L | L4 | GAS | Thermostat To Reservoir | Molded Heater Hose |
| 2009 | Saab | 9-3 | 2.0L | L4 | GAS | Thermostat To Reservoir | Molded Heater Hose |
| 2008 | Saab | 9-3 | 2.0L | L4 | GAS | Thermostat To Reservoir | Molded Heater Hose |
| 2007 | Saab | 9-3 | 2.0L | L4 | GAS | Thermostat To Reservoir | Molded Heater Hose |
| 2006 | Saab | 9-3 | 2.0L | L4 | GAS | Thermostat To Reservoir | Molded Heater Hose |
| 2005 | Buick | Rainier | 4.2L | L6 | GAS | Heater To Valve | Cut-to-fit HVAC heater hose for vehicles equipped with auxiliary heaters.; Molded Heater Hose |
| 2005 | Chevrolet | Trailblazer | 4.2L | L6 | GAS | Heater To Valve | Cut-to-fit HVAC heater hose for vehicles equipped with auxiliary heaters.; Molded Heater Hose |
| 2005 | Chevrolet | Trailblazer EXT | 4.2L | L6 | GAS | Heater To Valve | Cut-to-fit HVAC heater hose for vehicles equipped with auxiliary heaters.; Molded Heater Hose |
| 2005 | GMC | Envoy | 4.2L | L6 | GAS | Heater To Valve | Cut-to-fit HVAC heater hose for vehicles equipped with auxiliary heaters.; Molded Heater Hose |
| 2005 | GMC | Envoy XL | 4.2L | L6 | GAS | Heater To Valve | Cut-to-fit HVAC heater hose for vehicles equipped with auxiliary heaters.; Molded Heater Hose |
| 2005 | GMC | Envoy XUV | 4.2L | L6 | GAS | Heater To Valve | Cut-to-fit HVAC heater hose for vehicles equipped with auxiliary heaters.; Molded Heater Hose |
| 2005 | Isuzu | Ascender | 4.2L | L6 | GAS | Heater To Valve | Cut-to-fit HVAC heater hose for vehicles equipped with auxiliary heaters.; Molded Heater Hose |
| 2005 | Saab | 9-3 | 2.0L | L4 | GAS | Thermostat To Reservoir | Molded Heater Hose |
| 2004 | Buick | Rainier | 4.2L | L6 | GAS | Heater To Valve | Cut-to-fit HVAC heater hose for vehicles equipped with auxiliary heaters.; Molded Heater Hose |
| 2004 | Chevrolet | Trailblazer | 4.2L | L6 | GAS | Heater To Valve | Cut-to-fit HVAC heater hose for vehicles equipped with auxiliary heaters.; Molded Heater Hose |
| 2004 | Chevrolet | Trailblazer EXT | 4.2L | L6 | GAS | Heater To Valve | Cut-to-fit HVAC heater hose for vehicles equipped with auxiliary heaters.; Molded Heater Hose |
| 2004 | GMC | Envoy | 4.2L | L6 | GAS | Heater To Valve | Cut-to-fit HVAC heater hose for vehicles equipped with auxiliary heaters.; Molded Heater Hose |
| 2004 | GMC | Envoy XL | 4.2L | L6 | GAS | Heater To Valve | Cut-to-fit HVAC heater hose for vehicles equipped with auxiliary heaters.; Molded Heater Hose |
| 2004 | GMC | Envoy XUV | 4.2L | L6 | GAS | Heater To Valve | Cut-to-fit HVAC heater hose for vehicles equipped with auxiliary heaters.; Molded Heater Hose |
| 2004 | Isuzu | Ascender | 4.2L | L6 | GAS | Heater To Valve | Cut-to-fit HVAC heater hose for vehicles equipped with auxiliary heaters.; Molded Heater Hose |
| 2004 | Oldsmobile | Bravada | 4.2L | L6 | GAS | Heater To Valve | Cut-to-fit HVAC heater hose for vehicles equipped with auxiliary heaters.; Molded Heater Hose |
| 2004 | Saab | 9-3 | 2.0L | L4 | GAS | Thermostat To Reservoir | Molded Heater Hose |
| 2003 | Chevrolet | Trailblazer | 4.2L | L6 | GAS | Heater To Valve | Cut-to-fit HVAC heater hose for vehicles equipped with auxiliary heaters.; Molded Heater Hose |
| 2003 | Chevrolet | Trailblazer EXT | 4.2L | L6 | GAS | Heater To Valve | Cut-to-fit HVAC heater hose for vehicles equipped with auxiliary heaters.; Molded Heater Hose |
| 2003 | GMC | Envoy | 4.2L | L6 | GAS | Heater To Valve | Cut-to-fit HVAC heater hose for vehicles equipped with auxiliary heaters.; Molded Heater Hose |
| 2003 | GMC | Envoy XL | 4.2L | L6 | GAS | Heater To Valve | Cut-to-fit HVAC heater hose for vehicles equipped with auxiliary heaters.; Molded Heater Hose |
| 2003 | Isuzu | Ascender | 4.2L | L6 | GAS | Heater To Valve | Cut-to-fit HVAC heater hose for vehicles equipped with auxiliary heaters.; Molded Heater Hose |
| 2003 | Oldsmobile | Bravada | 4.2L | L6 | GAS | Heater To Valve | Cut-to-fit HVAC heater hose for vehicles equipped with auxiliary heaters.; Molded Heater Hose |
| 2003 | Saab | 9-3 | 2.0L | L4 | GAS | Thermostat To Reservoir | Molded Heater Hose |
| 2002 | Chevrolet | Trailblazer | 4.2L | L6 | GAS | Heater To Valve | Cut-to-fit HVAC heater hose for vehicles equipped with auxiliary heaters.; Molded Heater Hose |
| 2002 | Chevrolet | Trailblazer EXT | 4.2L | L6 | GAS | Heater To Valve | Cut-to-fit HVAC heater hose for vehicles equipped with auxiliary heaters.; Molded Heater Hose |
| 2002 | Ford | Thunderbird | 3.9L | V8 | GAS | Auxiliary Water Pump To Pipe-1 | Molded Heater Hose |
| 2002 | GMC | Envoy | 4.2L | L6 | GAS | Heater To Valve | Cut-to-fit HVAC heater hose for vehicles equipped with auxiliary heaters.; Molded Heater Hose |
| 2002 | GMC | Envoy XL | 4.2L | L6 | GAS | Heater To Valve | Cut-to-fit HVAC heater hose for vehicles equipped with auxiliary heaters.; Molded Heater Hose |
| 2002 | Jaguar | S-Type | 4.0L | V8 | GAS | Auxiliary Water Pump To Pipe-1 | Molded Heater Hose |
| 2002 | Lincoln | LS | 3.9L | V8 | GAS | Auxiliary Water Pump To Pipe-1 | Molded Heater Hose |
| 2002 | Oldsmobile | Bravada | 4.2L | L6 | GAS | Heater To Valve | Cut-to-fit HVAC heater hose for vehicles equipped with auxiliary heaters.; Molded Heater Hose |
| 2001 | Jaguar | S-Type | 4.0L | V8 | GAS | Auxiliary Water Pump To Pipe-1 | Molded Heater Hose |
| 2001 | Lincoln | LS | 3.9L | V8 | GAS | Auxiliary Water Pump To Pipe-1 | Molded Heater Hose |
| 2000 | Jaguar | S-Type | 4.0L | V8 | GAS | Auxiliary Water Pump To Pipe-1 | Molded Heater Hose |
| 2000 | Lincoln | LS | 3.9L | V8 | GAS | Auxiliary Water Pump To Pipe-1 | Molded Heater Hose |
* 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.