OE Quality
60-Day Returns

Gates 23091 Radiator Coolant Hose - Lower
Overview of Gates Molded Coolant Hose 23091
The Gates Molded Coolant Hose 23091 is engineered for reliable cooling system performance in select Audi and Volkswagen vehicles. Designed with durable EPDM, plastic, and steel materials, this radiator coolant hose ensures consistent coolant flow and system integrity.
- Constructed from EPDM, plastic, and steel for durability and heat resistance
- Molded design with female quick connector and sensor port for precise fitment
- Centerline length options of 12, 28, and 305 mm for accurate installation
- Compatible with Audi A4, A4 Quattro, A6, A6 Quattro, Passat, and S4 models
- Part number 23091 for easy identification and replacement
- Includes one quick connect fitting for secure hose connections
About the Molded Coolant Hose Product Line
The Gates Molded Coolant Hose line focuses on precision-engineered hoses that integrate modular components such as female quick connectors and sensor ports. This design approach facilitates straightforward installation and reliable coolant system operation. The molded construction enhances hose shape retention and reduces the risk of leaks or failures under thermal stress.
Detailed Product Description
The Gates Molded Coolant Hose 23091 is a radiator coolant hose designed to maintain optimal coolant circulation in specific Audi and Volkswagen vehicles. It features a molded construction using EPDM rubber, plastic, and steel components, providing resistance to heat, pressure, and chemical exposure common in automotive cooling systems. The hose includes a female quick connector and a sensor port, enabling integration with vehicle sensors and quick, secure connections. The hose ends have inside diameters of approximately 30 mm (1.2 inches) and 27.7 mm (1.09 inches) to match OEM specifications. Multiple centerline lengths (12 mm, 28 mm, and 305 mm) accommodate the hose routing requirements in the cooling system.
Common Applications and Problem Solving
- Replacement of worn or cracked radiator coolant hoses in Audi A4, A4 Quattro, A6, A6 Quattro, Passat, and S4
- Resolving coolant leaks caused by hose degradation or connector failure
- Addressing overheating issues due to restricted or collapsed hoses
- Upgrading to a molded hose with integrated sensor port for improved system diagnostics
- Ensuring proper coolant flow and pressure maintenance in the vehicle's cooling system
Installation Notes and Tips
- Verify compatibility with your specific Audi or Volkswagen model before installation
- Inspect all hose connections and clamps for wear and replace as necessary
- Ensure the female quick connector is securely engaged to prevent leaks
- Handle the sensor port carefully to avoid damage during installation
- Follow vehicle manufacturer torque specifications for hose clamps
Quality Assurance and Warranty
Gates Molded Coolant Hose 23091 is manufactured to meet or exceed OEM standards for durability and performance. The use of EPDM, plastic, and steel materials ensures resistance to heat, pressure, and chemical exposure typical in automotive cooling systems. While specific warranty details are not provided here, Gates products generally come with a limited warranty against defects in materials and workmanship. Consult product documentation or authorized distributors for exact warranty terms.
| Brand | Gates |
|---|---|
| Part Number | 23091 |
| Position | Molded Coolant Hose, Lower |
| 1 | |
| Yes | |
| Branch Quantity | 0 |
| Centerline Length | 12 |
| Centerline Length | 28 |
| Centerline Length | 305 |
| Contains Spring | No |
| End 1 Inside Diameter | 1.2 |
| End 1 Inside Diameter | 30 |
| End 2 Inside Diameter | 1.2 |
| End 2 Inside Diameter | 30 |
| End 3 Inside Diameter | 1.09 |
| Material | EPDM, Plastic, Steel |
| Modular Components | Female Quick Connector, Sensor Port |
| Modular Hose | Yes |
| Molded | Yes |
| Number of Quick Connect Fittings | 1 |
This part fits 26 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2004 | Audi | A6 Quattro | 2.7L | V6 | GAS | Lower | Molded Coolant Hose |
| 2003 | Audi | A6 Quattro | 2.7L | V6 | GAS | Lower | Molded Coolant Hose |
| 2002 | Audi | A6 Quattro | 2.7L | V6 | GAS | Lower | Molded Coolant Hose |
| 2002 | Audi | S4 | 2.7L | V6 | GAS | Lower | Molded Coolant Hose |
| 2001 | Audi | A4 | 2.8L | V6 | GAS | Lower | Molded Coolant Hose |
| 2001 | Audi | A4 Quattro | 2.8L | V6 | GAS | Lower | Molded Coolant Hose |
| 2001 | Audi | A6 | 2.8L | V6 | GAS | Lower | Molded Coolant Hose |
| 2001 | Audi | A6 Quattro | 2.7L | V6 | GAS | Lower | Molded Coolant Hose |
| 2001 | Audi | A6 Quattro | 2.8L | V6 | GAS | Lower | Molded Coolant Hose |
| 2001 | Audi | S4 | 2.7L | V6 | GAS | Lower | Molded Coolant Hose |
| 2001 | Volkswagen | Passat | 2.8L | V6 | GAS | Lower | Molded Coolant Hose |
| 2000 | Audi | A4 | 2.8L | V6 | GAS | Lower | Molded Coolant Hose |
| 2000 | Audi | A4 Quattro | 2.8L | V6 | GAS | Lower | Molded Coolant Hose |
| 2000 | Audi | A6 | 2.8L | V6 | GAS | Lower | Molded Coolant Hose |
| 2000 | Audi | A6 Quattro | 2.7L | V6 | GAS | Lower | Molded Coolant Hose |
| 2000 | Audi | A6 Quattro | 2.8L | V6 | GAS | Lower | Molded Coolant Hose |
| 2000 | Audi | S4 | 2.7L | V6 | GAS | Lower | Molded Coolant Hose |
| 2000 | Volkswagen | Passat | 2.8L | V6 | GAS | Lower | Molded Coolant Hose |
| 1999 | Audi | A4 | 2.8L | V6 | GAS | Lower | Molded Coolant Hose |
| 1999 | Audi | A4 Quattro | 2.8L | V6 | GAS | Lower | Molded Coolant Hose |
| 1999 | Audi | A6 | 2.8L | V6 | GAS | Lower | Molded Coolant Hose |
| 1999 | Audi | A6 Quattro | 2.8L | V6 | GAS | Lower | Molded Coolant Hose |
| 1999 | Volkswagen | Passat | 2.8L | V6 | GAS | Lower | Molded Coolant Hose |
| 1998 | Audi | A6 | 2.8L | V6 | GAS | Lower | Molded Coolant Hose |
| 1998 | Audi | A6 Quattro | 2.8L | V6 | GAS | Lower | Molded Coolant Hose |
| 1998 | Volkswagen | Passat | 2.8L | V6 | GAS | Lower | Molded Coolant 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.